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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.3.6.2.1 Diversion services
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8.3.6.2.1.1 Communication Forwarding Unconditional (CFU) The MWI shall never be diverted. 8.3.6.2.1.2 Communication Forwarding Busy (CFB) Same as CFU. 8.3.6.2.1.3 Communication Forwarding No Reply (CFNR) Same as CFU. 8.3.6.2.1.4 Communication Forwarding on Not Logged-in (CFNL) The MWI shall never be diverted. The indication shall be provided to the owning identity on re-registering.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.3.6.3 Interoperability with PSTN/ISDN
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There is no interoperability with PSTN/ISDN because MWI is a local service.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4 Optional services
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1 CONFerence (CONF)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.1 Definition
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The CONF simulation service enables a user to participate in and control a simultaneous communication involving a number of users. When the CONF simulation service is invoked, conference resources are allocated to the served user. Once a conference is active, users can join and leave a conference, and remote users can be added to or removed from the conference. This service description is based on the service description described in ETS 300 183 [23] and ETS 300 164 [24]. Conference participants can request to be informed of these actions. This information can include details beyond that described in ETS 300 183 [23] and ETS 300 164 [24], about other participants including their identity. The use of CONF on an emergency call, or a call identified as a callback to an emergency call, by a user that is not the PSAP, shall be precluded. Users shall support the use of CONF on an emergency call, or a call identified as a callback to an emergency call, by the remote party, i.e. the PSAP.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.2 Service interactions with other PSTN/ISDN simulation services (NGN)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.2.1 Diversion services
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No impact, i.e. neither simulation service shall affect the operation of the other simulation service. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 34
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.2.2 CONFerence (CONF)
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A user can be involved as the conference controller separately in more than one conference. However, the user cannot add any conference to another conference.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.2.3 Advice Of Charge services (AOC)
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No impact, i.e. neither simulation service shall affect the operation of the other simulation service. Communication diversion. NOTE: Every communication within the CONF service may be charged according to the normal communication procedures. Special arrangements (e.g. conference initiator may be charged for other parties' communications in the conference) are out of scope of the present specification.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.2.4 Originating Identification Restriction (OIR)
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The OIR service shall take precedence as required in TS 181 005 [1] clause 4.3.2.1.1. NOTE: A conference participant joining with an active OIR therefore has no details that can be included in any conference notifications. 8.4.1.2.5 Terminating Identification Restriction (TIR) The TIR service shall take precedence as required in TS 181 005 [1] clause 4.3.2.2.2. NOTE: A conference participant added with an active TIR therefore has no details that can be included in any conference notifications.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.2.6 Three-Party (3PTY)
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See clause 8.4.1.2.2, noting that 3PTY is a special case of CONF.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.1.3 Interoperability with PSTN/ISDN
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The NGN shall support the interoperability of the CONF service with PSTN/ISDN Supplementary Service CONF and vice-versa. The scope of this interworking may result in a limited service capability.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.2 Advice Of Charge (AOC)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.2.1 Definition
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AOC is a group of simulation services as follows: • Advice Of Charge: charging information at communication Set-up time (AOC-S). The advice of charge at communication set-up simulation service provides the user with information about the charging rates at the time of communication establishment or during the communication in the case of charging rates changes. The charge information provided relates to the charges incurred on the network to which the served user is attached. This service description is based on the service description described in ETS 300 178 [25] for AoC-S on a permanent mode. • Advice Of Charge: charging information During the communication (AOC-D). The advice of charge during the communication simulation service enables the user to receive information on the recorded charges for a communication during the active phase of the communication. The provided charging information may be exchanged between different operator domain if those operators have interconnect agreements to do so. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 35 This service description is based on the service description described in ETS 300 179 [26] for AoC-S on a permanent mode. • Advice Of Charge: charging information at the End of the communication (AOC-E). The advice of charge at end of communication simulation service provides the user with charging information for a communication when the communication is terminated. Dependent on the option chosen at the time of subscription, the information can be sent for all communications, or on a per communication basis. The charge information provided relates to the charges incurred on the network to which the served user is attached. This service description is based on the service description described in ETS 300 180 [27] for AoC-S on a permanent mode.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.2.2 Service interactions with other PSTN/ISDN simulation services (NGN)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.2.2.1 Diversion services
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Originating party: No impact, i.e. neither simulation service shall affect the operation of the other simulation service. Forwarding party: When a communication is forwarded and the forwarding party is charged for the forwarded part of the communication, then as a network option, the charging information can be transferred to the forwarding user when the communication is terminated.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.2.2.2 Completion of Communications to Busy Subscriber (CCBS)
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Charging information shall be provided for the original communication, and for the resulting CCBS communication.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.2.2.3 CONFerence (CONF)
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No impact, i.e. neither simulation service shall affect the operation of the other simulation service.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.2.3 Interoperability with PSTN/ISDN
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The NGN shall support the interoperability of the AOC service with PSTN/ISDN Supplementary Services and vice-versa. The scope of this interworking may result in a limited service capability.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.3 Explicit Communication Transfer (ECT)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.3.1 Definition
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The ECT simulation service enables a transferring party A to transform two of that party's communications (e.g. an active communication and a communication on hold, to parties B and C), each of which can be an incoming communication or an outgoing communication, into a new communication between party B and party C. Prior to transfer, the media session shall have been established on the communication between transferring party A and party B. On the communication between transferring party A and party C, either the media session shall have been established prior to transfer, or, as a service provider option, transfer can occur while the communication to party C is requested or being established (i.e. the media session has not yet been established). The minimum requirement for Release 1 should be to perform an "immediate" communication transfer for an incoming communication, without waiting on a response from party C. The service should be applicable independent of whether party B and party C are NGN users or not. This service description is based on the service description described in ETS 300 367 [28]. The use of ECT on an emergency call, or a call identified as a callback to an emergency call, by a user that is not the PSAP, shall be precluded. Users shall support the use of ECT on an emergency call, or a call identified as a callback to an emergency call, by the remote party, i.e. the PSAP. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 36
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.3.2 Service interactions with other PSTN/ISDN simulation services (NGN)
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.4.3.2.1 Identification services
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8.4.3.2.1.1 Terminating Identification Restriction (TIR) A terminating party's restriction requirements from the original communication shall be used in order to restrict the presentation of that party's identity to the other user in a transferred communication. NOTE: If the media flow(s) is established on the communication to party C after transfer, the presentation of the identity of party C should be restricted according to party C's Terminating identification restriction simulation service (i.e. as for the normal operation of the Terminating identification restriction simulation service).
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.3.2.2 Communication Barring (CB)
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In case the transferring party A has outgoing communication barring active towards party C, transferring party As request for communication transfer of party B to party C shall also be barred, if it occurs in relation to the establishment of the communication to C.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.3.2.3 CONFerence (CONF)
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The conference controller cannot transfer the conference to another party. NOTE: Conferees can invoke the ECT simulation service in order to transfer their connection to the conference to another party after that connection has been established.
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.4.3.2.4 Advice Of Charge (AOC)
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8.4.3.2.4.1 Advice Of Charge at communication Set-up (AOC-S) When party A transfers a communication, AOC-S shall be considered as completed. For party B and party C, no impact, i.e. neither simulation service shall affect the operation of the other simulation service. 8.4.3.2.4.2 Advice Of Charge During the communication (AOC-D) When party A transfers a communication and has activated AOC-D, the charge up to that time shall be sent as a subtotal charge for that communication. The AOC-D simulation service shall then be considered as completed. NOTE: If party A had activated the AOC-D, then party A will receive information separately for both of the communications. For party B and party C, no impact, i.e. neither simulation service shall affect the operation of the other simulation service. 8.4.3.2.4.3 Advice Of Charge at the End of a communication (AOC-E) If a party A is charged for the transferred part of the communication and has activated the AOC-E, then either: a) the charging information shall be sent to party A when the transferred communication is terminated; or b) when the communications are transferred, party A shall be informed that charging information is not available. The AOC-E shall then be considered as completed. For party B and party C, no impact, i.e. neither simulation service shall affect the operation of the other simulation service. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 37
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.3.2.5 Explicit Communication Transfer (ECT)
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The ECT simulation service can be invoked simultaneously by any of the parties on an active communication, but this is not regarded as a normal situation. The network shall not explicitly prevent this occurring. Therefore, both parties (party A and party B) in a normal communication, who have each subscribed to the ECT simulation service, can simultaneously transfer the communication. That is, if party A and party B are involved in a communication on which the connection has been established, party A can transfer the communication to party C and party B can transfer the communication to another party. NOTE: Mechanisms which prevent the ECT simulation service from resulting in a connection which contains no parties able to terminate the communication may result in rejection of simultaneous requests to invoke the ECT simulation service by the parties involved in the communication.
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.4.3.3 Interoperability with PSTN/ISDN
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No restrictions.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.4 Reverse charging
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.4.1 Definition
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The reverse charging at communication set up time simulation service allows the terminating party to be charged for the entire communication. Only usage based charges can be applied to the terminating party. The service shall be requested by the originating party at communication set up time. The terminating party must receive an explicit indication of a reverse charge communication request. This service description is based on the service description described in ITU-T Recommendation I.256.3 [29].
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.4.2 Service interactions with other PSTN/ISDN simulation services (NGN)
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None.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.4.3 Interoperability with PSTN/ISDN
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The NGN shall support the interoperability of Reverse Charging with the PSTN/ISDN and vice-versa.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5 Closed User Group (CUG)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.1 Definition
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The CUG simulation service enables users to form groups of members, whose communication profile is restricted for incoming and outgoing communications. Members of a specific CUG can communicate among themselves but not, in general, with users outside the group. Specific CUG members can have additional capabilities that allow them to initiate outgoing communications to users outside the group, and/or to accept incoming communications from users outside the group. Specific CUG members can have additional restrictions that prevent outgoing communications to other members of the CUG, or prevent incoming communications from other members of the CUG. A closed user group consists of a number of members from one or more public, and/or private networks. Identification of each member shall be according to the requirements in TS 181 005 [1]. A specific user may be a member of one or more CUGs. Subscription to a closed user group shall be defined for all communication services, or in relation to one, or to a list of communication services. This service description is based on the ISDN service description described in ETS 300 136 [30]. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 38
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.2 Service interactions with other PSTN/ISDN simulation services (NGN)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.2.1 Diversion services
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.2.1.1 Communication Forwarding Unconditional (CFU)
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CUG restrictions shall be checked and met for the communication between the originating party and the forwarding party. The information of a CUG applied by the NGN on the original communication shall be used for the communication forwarding and by this means CUG restrictions shall be checked and met for the communication between the originating party and the forwarded-to party. In the case of multiple forwarding, CUG restrictions between the originating party and the forwarding party have to be checked and met at each intermediate forwarding point. In addition, CUG restrictions between the originating party and forwarded-to party shall be met end-to-end. The outgoing communication barring information of the forwarding party shall not be used to determine whether the communication can be forwarded. The CUG information sent to the "forwarded-to" destination shall the same CUG information of the originating party that was sent from the originating network. 8.4.5.2.1.2 Communication Forwarding Busy (CFB) See interactions with CFU 8.4.7.2.1.1.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.2.1.3 Call Forwarding No Reply (CFNR)
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See interactions with CFU 8.4.7.2.1.1. NOTE: CUG restrictions were checked and met for the communication between the originating party and the forwarding party when the communication was offered to the forwarding party.
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.4.5.2.1.4 Communication Forwarding on Not Logged-in (CFNL)
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See interactions with CFU 8.4.7.2.1.1.
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.4.5.2.1.5 Communication Forwarding on Subscriber Not Reachable (CFNRc).
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See interactions with CFU 8.4.7.2.1.1.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.2.1.6 Communication Deflection (CD)
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The information of a CUG applied by the NGN on the original communication shall be used for the deflected part of the communication and by this means CUG restrictions shall be checked and met for the communication between the originating party and the deflected-to party. In the case of multiple deflections, CUG restrictions between the originating party and the deflecting party have to be checked and met at each intermediate deflecting point. In addition, CUG restrictions between the originating party and deflected-to party shall be met end-to-end. When a communication is deflected, a new check of the CUG restrictions between the originating party and the deflected-to party is made at the "deflected-to" destination. The CUG information sent to the "deflected-to" destination is the same CUG information of the originating party that was sent from the originating network. The outgoing communication barring information of the deflecting party shall not be used to determine whether the communication can be deflected. NOTE: CUG restrictions were checked and met for the communication between the originating party and the deflecting party when the communication was offered to the deflecting party. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 39
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.2.2 Explicit Communication Transfer (ECT)
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The two communications shall use the same CUG for the transfer to be successful. NOTE: CUG restrictions between users will have been checked when the first communication is established. Similarly, CUG restrictions between users will have been checked when establishing the second communication. 8.4.5.2.3 Three-Party (3PTY) For the successful invocation of the three party simulation service any CUG restrictions applied to one communication shall match with any CUG restrictions applied to the other communication.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.5.2.4 CONFerence (CONF)
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When the communication involving the first conferee is added to the conference, then the conference shall assume the CUG of that communication. In order to add a subsequent communication to the conference, then the CUG of that communication shall be checked against the CUG of the conference.
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.4.5.3 Interoperability with PSTN/ISDN
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The NGN shall support the interoperability of the CUG service with the PSTN/ISDN and vice versa. No restrictions.
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.4.6 Three-Party (3PTY)
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.6.1 Definition
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The 3PTY simulation service enables a user to establish, participate in and control a simultaneous communication involving a number of users. The 3PTY simulation service can be invoked by the served user who is involved in at least two calls (one active communication and at least one held communication), each of which may be an incoming or outgoing communication. The connections shall be established on each of the two communications prior to the invocation of the 3PTY simulation service. 3PTY communication setup is equivalent to a three party conference created on request of the served user from existing communication sessions, this is equivalent to three party conference creation in CONF, For this reason 3PTY can be seen as a special case of CONF and most of service interactions for CONF apply also to 3PTY. This service description is based on the service description described in ETS 300 186 [31]. NOTE: Same mechanism for CONF and 3PTY should be used.
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ae3dfca740c8c62772d38184c6500f19
|
181 002
|
8.4.6.2 Service interactions with other PSTN/ISDN simulation services (NGN)
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ae3dfca740c8c62772d38184c6500f19
|
181 002
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8.4.6.2.1 Terminating Identification Presentation (OIR)
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See clause 8.4.1.2.4, noting that 3PTY is a special case of CONF. 8.4.6.2.2 Terminating Identification Restriction (TIR) See clause 8.4.1.2.5, noting that 3PTY is a special case of CONF.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.6.2.3 Three-Party (3PTY)
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A, B and C are in a three-way conversation that was created by B invoking the 3PTY service. A can create a second three-way conversation involving the original three-way conversation and D by invoking the 3PTY service. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 40
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.6.2.4 CONFerence (CONF)
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A, B and C are involved in a conference that was created by B invoking the CONF service. A can create a three-way conversation involving the original conference call and D by invoking the 3PTY service. NOTE: It is FFS whether there is a conflict with the requirement expressed by 8.4.1.2.2, considering that 3PTY is just a special case of CONF.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.4.6.3 Interoperability with PSTN/ISDN
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The NGN shall support the interoperability of the 3PTY service with PSTN/ISDN supplementary service 3PTY and vice-versa. The scope of this interworking may result in a limited service capability.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.5 Concepts associated with supplementary services
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Provision, Withdrawal, Registration, Erasure, Activation, Deactivation and Invocation shall be as defined in ITU-T Recommendation I.210 [2]. 8.6 Use of authorization option in relation to supplementary services
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.6.1 Definition
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Some supplementary services (e.g. communication session barring) can be offered to a user with the subscription option of authorization to control the service. When this option is selected, every action (related to that supplementary service), such as registration, erasure, activation or deactivation is performed by the user with concurrent authentication.
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ae3dfca740c8c62772d38184c6500f19
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181 002
|
8.6.2 Description
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When the subscription option authorized control of a supplementary service is provided, authentication handling is supported by the network.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.6.3 Management - normal procedures and successful outcome
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ae3dfca740c8c62772d38184c6500f19
|
181 002
|
8.6.3.1 Provision of authorization
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Each supplementary service which requires authorization to control this service may be offered with the subscription option authorized control of the supplementary service. The values of this option may be: • user authentication; • by the service provider.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.6.3.2 Withdrawal of authorization
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Authorization may be withdrawn for administrative reasons or due to subscription modification.
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ae3dfca740c8c62772d38184c6500f19
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181 002
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8.6.3.3 Authentication requirements
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The network shall provide, and allow the user to maintain, the authentication credentials. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 41 Annex A (informative): General terminal guidelines A.1 Service state indication It is considered useful to indicate to the user the current state, notably the activated state of those services which can lead to communications not being offered. For example, an active CFU results in no communication being presented. Generally speaking any "not usual" state of a service should be indicated on the terminal: CFU activated, CW deactivated, OIR in permanent mode activated, etc. In the case of services which can be remotely controlled from another terminal or a server, the terminal should receive this information from the network. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 42 Annex B (informative): Service interactions table Table B.1 summarizes the service interactions between pairs of PSTN/ISDN simulation services, as identified in clause 8. Each case of the table represents the scenario where services on the horizontal row heading are invoked when services on the vertical column heading are already active. The case is filled with one of three possible options: character "Y" indicates interaction has been identified between the corresponding service pair and described in the present document, character "N" indicates no interaction has been identified and no information is provided in the present document, grey colour filling is for scenarios which are not applicable. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 43 Table B.1: Identified service interactions between pairs of PSTN/ISDN simulation services O I P O I R T I P T I R M C I D A C R C F U C F B C F N R C F N L C D C F N R c CDIVN C W H O L D C B C C B S M W I C O N F A O C E C T R C CUG 3PTY Originating Identification Presentation (OIP) - Y N N N Y Y Y Y Y Y Y Y Y N N N N N N N N N N Originating Identification Restriction (OIR) Y - N N N Y Y Y Y Y Y Y Y N N N N N N N N N N N Terminating Identification Presentation (TIP) N N - Y N N Y Y Y Y Y Y N N N N N N N N N N N N Terminating Identification Restriction (TIR) N N Y - N N Y N N N N N N N N N N N N N Y N N N Malicious Communication Identification (MCID) N N N N - N Y N Y N Y Y N N N N N N N N N N N N Anonymous Communication Rejection (ACR) N N N N N - Y Y Y Y N Y N Y N N Y N N N N N N N Communication Forwarding Unconditional (CFU) Y Y Y N N Y - Y Y Y Y Y N N N Y Y Y N Y N N Y N Communication Forwarding Busy (CFB) Y Y Y N N Y Y - N N Y Y N (see note) N Y Y Y N Y N N Y N Communication Forwarding No Reply (CFNR) Y Y Y N Y Y Y N - N N N N Y N Y Y Y N Y N N Y N Communication Forwarding on Not Logged-In (CFNL) Y Y Y N N Y Y N N - N N N N N Y Y Y N Y N N Y N Communication Deflection (CD) Y Y Y N Y Y Y Y N N - N N Y N Y Y Y N Y N N Y N Communication Forwarding on Subscriber Not Reachable (CFNRc) Y Y Y N Y Y Y Y N N N - N Y N Y Y Y N N N N Y N Communication Diversion Notification (CDIVN) Y Y N N N N N N N N N N - N N N N N N N N N N N Communication Waiting (CW) Y N N N N Y N (see note) Y N Y Y N - N N Y N N N N N N N Communication Hold (HOLD) N N N N N N N N N N N N N N - N N N N N N N N Y Communication Barring (CB) N N N N N N Y Y Y Y Y Y N N N - Y N N N Y N N N ETSI ETSI TS 181 002 V2.2.5 (2007-11) 44 O I P O I R T I P T I R M C I D A C R C F U C F B C F N R C F N L C D C F N R c CDIVN C W H O L D C B C C B S M W I C O N F A O C E C T R C CUG 3PTY Completion of Communications to Busy Subscriber (CCBS) N N N N N Y Y Y Y Y Y Y N Y Y Y Y N N Y N N N N Message Waiting Indication (MWI) N N N N N N Y Y Y Y N Y N N N N N - N N N N N N Conference (CONF) N N N N N N N N N N N N N N N N N N Y Y Y N Y N Advice of Charge (AOC) N N N N N N Y Y Y Y Y N N N N N Y N Y - N N N N Explicit Communication Transfer (ECT) N Y N N Y N N N N N N N N N N Y N N Y Y Y N Y N Reverse Charging (RC) N N N N N N N N N N N N N N N N N N N N N - N N Closed User Group (CUG) N N N N N N Y Y Y Y Y Y N N N N N N Y N Y N - N Three-Party (3PTY) N N N N N N N N N N N N N N Y N N N N N N N Y Y NOTE: It is not permitted to have both CW and CFB active at the same time for a particular user. ETSI ETSI TS 181 002 V2.2.5 (2007-11) 45 Annex C (informative): Bibliography • ITU-T Recommendation Q.1290: "Glossary of terms used in the definition of intelligent network". • ITU-T Recommendation I.140: "Attribute technique for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN". • ETSI ETS 300 094 (V2.1.1): "Integrated Services Digital Network (ISDN); Connected Line Identification Presentation (COLP); supplementary service; Service description". ETSI ETSI TS 181 002 V2.2.5 (2007-11) 46 History Document history V1.1.1 March 2006 Publication V1.2.10 November 2007 Publication V2.2.5 November 2007 Publication
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181 001
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1 Scope
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The present document defines the requirements for a videotelephony service which may be supported by a TISPAN NGN. These requirements form the basis for the definition of network capabilities. The present document provides interoperability service requirements for interconnection between existing networks and a TISPAN NGN, and between TISPAN NGN. The present document only provides requirements for IP multimedia based networks. Services provided by a TISPAN NGN to support legacy terminals and interfaces (PSTN/ISDN emulation) are defined in existing PSTN/ISDN documents. Requirements for PSTN/ISDN emulation are out of scope of the present document and are described in other documents. The applicability of PSTN/ISDN simulation services to the videotelephony service requirements are defined in the present document. The requirements in the present document are described from the user point of view. The requirements do not take into account capabilities of existing protocols defined for the IMS. The evolution or modifications to these protocols are beyond the scope of the present document. NOTE: The present document uses the term "NGN" only in the context of TISPAN.
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2 References
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The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. [1] ETSI TS 181 002: "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Multimedia Telephony with PSTN/ISDN simulation services". [2] ETSI TS 181 005: "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); Services and Capabilities Requirements". [3] ETSI TR 180 000: "Telecommunications and Internet converged Services and Protocols for Advanced Networking (TISPAN); NGN Terminology".
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181 001
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3 Definitions and abbreviations
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181 001
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3.1 Definitions
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For the purposes of the present document, the following terms and definitions given in TR 180 000 [3] apply: • originating party; • terminating party. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 7
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3.2 Abbreviations
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For the purposes of the present document, the following abbreviations apply: ACR Anonymous Communication Rejection AoC Advice of Charge CB Communication session Barring CCBS Communication Completion on Busy Subscriber CDIV Communication DIVersion CIF Common Intermediate Format CONF CONFerence CW Communication Waiting ECT Explicit Communication Transfer HOLD communication HOLD IMS IP Multimedia Subsystem IP Internet Protocol ISDN Intergrated Services Digital Network MCID Malicious Communication IDentification MWI Message Waiting Indication NGN Next Generation Network OIP Originating Identification Presentation OIR Originating Identification Restriction PCM Pulse Coded Modulation PIP PIcture and Picture PSTN Public Swithched Telephone Network QCIF Quarter Common Intermediate Format RTP Real-time Transport Protocol SMS Short Message Service TIP Terminating Identification Presentation TIR Terminating Identification Restriction
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181 001
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4 Service description
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Videotelephony is a real time conversational service using video media and audio or other types of media. The service is assumed to be applicable only to dedicated terminal equipment with video capabilities. The videotelephony service may be considered as a specific instance of an IP multimedia service, or as part of the Multimedia Telephony with PSTN/ISDN Simulation Services.
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5 Procedures
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5.1 General service requirements
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The videotelephony service shall conform to the requirements in TS 181 005 [2], clause 5.2.1. In particular, the following capabilities described in TS 181 005 [2] shall be applicable to this service: • Handling of an incoming session (by the terminating entity). • Presentation of session originator identity. • Negotiation of an incoming session. • Accepting or rejecting an incoming session. • Handling of an ongoing session. • User modification of media in an ongoing session. • Presentation of identity of connected-to party of a session. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 8 • Ending a session. • Capability Negotiation. • Redirecting of IP Multimedia sessions. • Regulatory service requirements. • Lawful Intercept requirements. • Emergency service requirements. NOTE: Emergency Service support for video may be limited. • Malicious Communication Identity service requirements (MCID). • Anonymous Communications Rejection service requirements (ACR). 5.2 Registration, provisioning, activation, invocation and withdrawal The requirements for Registration/Log-out, provisioning, activation, invocation and withdrawal shall be as described in TS 181 005 [2].
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5.3 Charging and accounting
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The requirements for charging and accounting shall be as described in TS 181 005 [2].
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6 Quality of service requirements
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6.1 General
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The quality of service requirements shall be as described in TS 181 005 [2]. The following parameters may also be taken into account: Overall Delay, Delay Variation, Differential Delay between sound and image, Sound Quality, Image Quality, Echo Cancellation, Sensitivity to Packet Loss, etc.
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6.2 Video quality
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Four profiles are defined in table 1. Other enhancement or additional functions may be added. Table 1: Video quality profile Profile Description A Basic Videotelephony: PCM or equivalent telephony audio, QCIF or CIF video with limited movements capability. B Enhanced Videotelephony: wideband audio, CIF video. The service should be usable for sign language and lip-reading and should provide adequate representation of the fluid movements of a person displayed in head and shoulders view. Facial expressions shall be clearly recognized. C Television Broadcasting quality. D High Definition Television quality.
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6.3 Audio quality
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Videotelephony does not place any additional requirements for audio quality. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 9
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7 Interworking considerations
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7.1 General
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An NGN shall support the interoperability of the videotelephony service with non NGN network services and vice versa. This includes interworking the audio component to the PSTN/ISDN and vice versa. The video component shall only be interworked if video is supported in the non NGN network. The scope of this interworking may result in a limited service capability. 7.2 Interworking with emulation services An NGN shall support the interoperability of the Multimedia Telephony with PSTN/ISDN Simulation Services with the services provided by the NGN PSTN/ISDN Emulation subsystems where both are deployed. The scope of this interworking may result in the same limited service capability as interworking with an existing PSTN/ISDN network.
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181 001
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8 Interactions with PSTN/ISDN simulation services
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181 001
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8.1 General
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A network operator may choose to offer the PSTN/ISDN simulation services as described in TS 181 002 [1] in conjunction with this videotelephony service as part of an NGN deployment scenario. The following clauses detail the use of PSTN/ISDN simulation services with this videotelephony service for this scenario.
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8.2 Mandatory services
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8.2.1 Originating Identification Presentation (OIP)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.2.2 Originating Identification Restriction (OIR)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.2.3 Terminating Identification Presentation (TIP)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.2.4 Terminating Identification Restriction (TIR)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.2.5 Malicious Communication Identification (MCID)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.2.6 Anonymous Communication Rejection (ACR)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 10
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8.3 Recommended Services
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8.3.1 Communication DIVersion (CDIV)
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In addition to the principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] the following shall also apply: User A requests a communication with user B, who has activated Communication Diversion towards user C. If either user A or C requests a video component to be added to the communication, the request will only be successful if it is a permitted option of all parties (i.e. the service option of user B shall be taken into account for a diverted communication).
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8.3.2 Communication Waiting (CW)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.3.3 Communication HOLD (HOLD)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.3.4 Communication Baring (CB)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.3.5 Communication Completion on Busy Subscriber (CCBS)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.3.6 Message Waiting Indication (MWI)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply.
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8.4 Optional services
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181 001
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8.4.1 CONFerence (CONF)
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In addition to the principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] the following shall also apply. A videotelephony service shall allow a conference service. If a correspondent's terminal doesn't allow videotelephony service, this conference shall be an audio conference for this correspondent and a video + audio conference for the other correspondents. A user shall be able to create a videoconference at any time during a communication.
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8.4.2 Advice of Charge (AoC)
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 11
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8.4.3 Explicit Communication Transfer (ECT)
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In addition to the principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] the following shall also apply: When the transferring user A, transfers a communication from user B to user C, which may be: • just requested; • in progress of being established; or • already established. The resulting communication between user B to user C shall retain the media components common to the original communications. If there are no common components, the ECT will be refused.
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8.4.4 Reverse charging
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The principles of the corresponding PSTN/ISDN simulation service defined in TS 181 002 [1] shall apply. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 12 Annex A (informative): Guidelines A.1 Terminal requirements The Videotelephony service needs to have a friendly user interface allowing an easy use in a family context. The user shall be able to see the local video and far-end video. NOTE: LS shall be send to HF and AT concerning terminal requirements before deleting this annex from the present document. A.1.1 Service options The following applications may also be supported: • visual guideline to assist the user to use the videotelephony service; • transmission of other data such as documents, texts (Instant Messaging, chat, SMS), pictures, music, etc.; • far-end camera control; • conference; • camera with adjustable shooting and zoom (additional cameras and microphones); • when an external and an internal audio sources are used, the audio signal must be a mix of both and the user should manage it. A.1.2 Communication set-up A dedicated information shall indicate to the user the communication status, in particular: • video-audio mode: both users can see each other; • mute mode: the user audio signal is not transmitted to the other party; • video privacy mode: the user video signal is not transmitted to the other party. The dedicated information can be a visual and/or an audible information. NOTE: Out of communications, the presence of a camera device can disturb the user. It should be may to hide it physically. The detailed procedure of the communication establishment depends on the type of terminal used. Basically the procedure shall be consistent with the existing procedure for a NGN terminal communication and shall be as simple as possible in order to achieve good acceptance: • the originating party is aware of being connected; • the originating party indicates the Destination Identification; • the originating party receives an acknowledgement that the network is able to process the communication; • the destination party receives an indication of the arrival of an incoming videotelephony communication; • the originating party receives an indication that the communication has been offered; ETSI ETSI TS 181 001 V1.1.1 (2006-03) 13 • the destination party chooses to be heard or/and to be seen by the originating party (audio mode or/and video mode); • the destination party answers the communication; • the bidirectional communication is established (opening of the RTP ports). Two options shall be possible for the communication establishment: • the communication is first established in audio mode and then switches to in video mode; • or either the communication is established directly in video-audio mode. A.1.2.1 Communication setup in audio mode In this mode, the communication shall be established first in audio mode and then only will change to video mode upon request of the participants. A.1.2.2 Communication setup in mute mode In this mode, the communication shall be established first in video mode and then only will change to video-audio mode upon request of the participants. A.1.2.3 Communication setup in video-audio mode In this mode, the communication shall be established directly in video associated with audio: the originating party sees and hears the destination party right from the start of the communication as well as that the destination party sees and hears the originating party right from the start. Speech and image shall be connected simultaneously and synchronized. Independently of communication, it should always be possible to display the local image (PIP: PIcture and Picture function). If the received communication do not support video mode (for example if the communication is received from a legacy terminal), the originating party shall be informed by dedicated information his correspondent receives the call in audio mode. A.1.3 Communication release The procedure for terminating a communication shall be the same as for legacy telephony. A request to terminate the videotelephony communication can be generated by either of the users. If one user terminates the communication, the other shall be given a dedicated indication. The audio and video connections shall be simultaneously closed when the user hangs up or the network releases the connections. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 14 A.2 Change of communication mode A.2.1 Mute Each party shall be able to mute the video and/or audio stream at any time (before or during the communication). A.2.2 Frozen Each party shall be able to freeze the picture the terminal is sending to the remote. The remote terminal must display the frozen picture without blinks or impairments, even when the frozen picture is displayed on interlaced monitors such as TV screens. The frozen image shall not be inversed (i.e. not a mirror image, in order to read a document for example). A.2.3 Audio/video The user should be able to switch easily between audio and video communication, either off-line (pre-configuration) or during the communication. During the modification request, the appropriate media should be selected to allow the right service with full transparency for user. During modification request the previous service should stay active without stopping the communication and the new service selected should be negotiated in background. Contrary to switch video to audio mode, for switching audio to video mode both parties shall accept the video mode. The switch should not result in a new communication service but the addition or deletion of media components to the existing communication. A.2.4 External source The user should be able to change the video source during the call or off-line (before calling) in order to share audio/video with his correspondent. As soon as the user changes the video source, a dedicated information may warn the user that he has changes the source. A.2.5 Synchronization The videotelephony service shall be able to perform synchronization between audio and video to an effect that there is no or acceptable human perceivable lack of lip-synchronization. A.2.6 Other The user can choose a screen on his terminal. If no screen is chosen, a default screen is displayed. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 15 A.3 Use cases Videotelephony scenarios include: • face-to-face conversation with both audio and video; • communication of speech and hearing impaired persons using sign language; • remote video surveillance (e.g. home security; remote baby-monitoring); • transfer of moving scenes or documents with drawings and text; • share of documents to work in real time; • face-to-face conversation with simultaneous transfer of picture data such as images, documents and files of other kinds; • remote consultation; • remote diagnosis in telemedicine; • participation in a videoconferencing. ETSI ETSI TS 181 001 V1.1.1 (2006-03) 16 History Document history V1.1.1 March 2006 Publication
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1 Scope
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The present document give guidelines for the functional requirements required for a MESA system that is consistent with the Service Specification Group's Statement of Requirements (TS 170 001 [1]) and the Technical Specification Groups Network Architecture (MESA 70.015 [i.1]). The present document is intended to be the input into a gap analysis of existing standards and technologies with an ultimate goal to update the existing standards and technologies to be fully compliant with the functional requirements in the present document.
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2 References
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References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity.
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2.1 Normative references
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The following referenced documents are indispensable for the application of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. [1] ETSI TS 170 001: "Project MESA; Service Specification Group - Services and Applications; Statement of Requirements", MESA TS 70.001.
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2.2 Informative references
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The following referenced documents are not essential to the use of the present document but they assist the user with regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. [i.1] MESA 70.015: " Project MESA; Technical Specification Group - System; System and Network Architecture ".
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3 Definitions and abbreviations
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170 016
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3.1 Definitions
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For the purposes of the present document, the following terms and definitions apply: airlink resources: available throughput (voice and data) for a given location that can be shared across all users ETSI ETSI TS 170 016 V3.1.1 (2009-02) 6 authorized principal: principal with permissions to perform specific action(s) or receive specific information (Source OMA Dictionary) bandwidth: amount of spectrum required for the system NOTE: See also Channel Bandwidth, Radio Bandwidth. channel bandwidth: amount of spectrum required for a single channel of the system components: individual parts that together make up the entire system, generally inclusive of devices NOTE: See also Nodes, Network Elements. cooperative use: system able to operate overlapped with another system with the components of each system cooperating, not interfering dynamic bandwidth: allows bandwidth to be changed to allow more capacity for priority users effective user data rate: effective throughput (voice and data) as perceived by an end user forward compatibility: ability for a system to operate with future protocols of itself logical networks: AWN, EAN, JAN, IAN, and PAN as described in the MESA System and Network Architecture Document MESA system: complete set of integrated components that provide full communication functionality meeting the MESA Statement of Requirements network elements: individual parts, that together, make up the entire system, excluding devices or clients NOTE: See also Components, Nodes. network functions: user transparent functions of the system, such as authentication proxying for single sign on, mobility support, policy enforcement, etc. nodes: individual parts that together make up the entire system inclusive of devices and clients NOTE: See also, Components, Network Elements. Off-Net: "Off Network", meaning the user does not have access to fixed network services, and access to services is restricted to those that reside in the device or functioning wireless transmitters (vehicle or wireless site) On-Net: "On Network", meaning the user has access to the fixed network services that reside in data or switching centers peer-to-peer: service within a device that communicates directly with other devices, and does not communicate with any network component NOTE: Note that this does not preclude the communication from being carried by the network, only that application level messaging is originated and terminated by services resident on the device. principal: an entity that has an identity, that is capable of providing consent and other data, and to which authenticated actions are done on its behalf EXAMPLE: Examples of principals include an individual user, a group of individuals, a corporation, service enablers/applications, system entities and other legal entities. (Source OMA Dictionary). radio bandwidth: amount of spectrum required for the system (inclusive of all channels used) run-time: commands are executed as they are given single sign on: ability for the user to provide authentication credentials once to the system, and the system proxies those credentials to any application or services requiring credentials system: unless otherwise specified, system refers to the MESA system ETSI ETSI TS 170 016 V3.1.1 (2009-02) 7 untrusted connections: connections where the connecting parties have not conducted prior mutual authentication and authorization
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