4 Calling Name Presentation (CNAP)

02.963GPPName identification supplementary servicesStage 1TS

4.1 Definition

The CNAP supplementary service enables the called party to receive the calling name information of the calling party.

4.2 Description

4.2.1 Description

This supplementary service provides for the ability to indicate the name information of the calling party to the called party at call set-up time for all incoming calls.

The calling party takes no action to activate, initiate, or in any manner provide Calling Name Identification Presentation. However, the delivery of the calling name to the called party may be affected by other services subscribed to by the calling party. For example, if the calling party has subscribed to Calling Line Identification Restriction (CLIR), then the calling line identity as well as the calling name identity shall not be presented to the called party.

4.2.2 Applicability to telecommunication services

The applicability of this supplementary service is defined in GSM 02.04.

CNAP is applicable to all telecommunication services except Short Message service. (for further study)

4.3 Normal procedures with successful outcome

4.3.1 Provision

This supplementary service is provisioned for all Basic Services subscribed to and to which it is applicable, i.e. not provisioned for any subset of these Basic Services.

This service shall be provided after pre-arrangement with the service provider. It may be provided on a subscription basis or be generally available.

The override category controlling the name information is separate from the override category for the line identity information. It is left to the CNAP service provider to ensure that no discrepancy between these two override categories occurs. The handling of override category within a PLMN or between PLMNs shall follow the rules applying to the override category of the line identification services [3].

4.3.2 Withdrawal

The CNAP supplementary service shall be withdrawn at the customer’s request or for administrative reasons.

4.3.3 Registration

Not applicable.

4.3.4 Erasure

Not applicable.

4.3.5 Activation

The CNAP supplementary service is activated as a result of provision.

4.3.6 Deactivation

The CNAP supplementary service is deactivated as a result of withdrawal.

4.3.7 Invocation

The network shall automatically invoke the CNAP supplementary service in the call set-up phase to the terminating CNAP subscriber.

CNAP is invoked when the Calling Name Information associated with an incoming call is available and can be presented to the called party which has subscribed to CNAP.

4.3.8 Normal operation with successful outcome

A user who has subscribed to the CNAP supplementary service and receives a call shall also receive the calling name information of the calling party, if available.

The calling party takes no action to activate, initiate, or in any manner provide the calling name identity.

When the CNAP service is subscribed and activated, the destination network provides the called subscriber with calling name information at call set-up on all incoming calls or during an active call for that particular call.

In addition to, or instead of, the calling name identity, the subscriber may be given a presentation indicator with the relevant information.

4.3.9 Interrogation

Status check

The mobile subscriber can, by the appropriate control procedure, request from the network the status of this supplementary service. Upon receiving an interrogation request, the network shall send the status of this supplementary service to the subscriber.

The information sent to the subscriber shall indicate whether the service is provided to her.

The information sent in response to the interrogation of this supplementary service shall not imply the status of any other supplementary service.

4.4 Exceptional procedures or unsuccessful outcome

If the name identity for a specific caller is not available, then the CNAP subscriber shall be sent an indication that the name is unavailable.

If the network has been unable to determine the appropriate name information within a predefined time, then the CNAP subscriber shall be sent an indication that the name is unavailable. The predefined time is a network dependent value such that the called user may receive the name in a timely manner prior to answer.

If the calling name information is not available due to a system problem, such as signalling inter-working, then a standard error treatment shall be provided, which may be a visual display to the subscriber indicating the name is unavailable.

4.5 Alternate procedures

The decision of whether the user-defined name stored in the handset should take precedence over the calling name identity provided by the network is a handset implementation issue.

4.6 Interactions with other GSM supplementary services

Only those supplementary services for which CNAP has any interactions are detailed in this clause. For all other Phase 2 supplementary services not mentioned in this clause no interactions were identified.

4.6.1 Calling Line Identification Presentation (CLIP)

No interaction.

4.6.2 Calling Line Identification Restriction (CLIR)

The CLIR supplementary service shall take precedence over the CNAP supplementary service, unless the called user has an override category. In this latter case, it is assumed that the override category for name information has been set so that the name information is presented to the called user.

The Calling Line Identification Restriction (CLIR) information shall be used to restrict the delivery of the calling name to the called subscriber. That is, if the calling party has activated CLIR then instead of the calling name, a privacy indication shall be provided to the called subscriber, which may be a visual display indicating “private” (or Restricted) name. This method of restricting calling name shall not restrict the use or implementation of other calling name restriction methods when the calling party is a fixed subscriber. These methods used by fixed subscribers are outside the scope of this specification.

4.6.3 Call Forwarding Unconditional (CFU)

For an incoming call to a subscriber with both CNAP and Call Forwarding Unconditional activated, the calling party name information shall not be displayed at the forwarding subscribers terminal.

When a call has been forwarded and the forwarded-to user has been provided with the CNAP supplementary service, the forwarded-to user shall receive the name of the original calling party, if the calling party has not subscribed to or invoked the CLIR supplementary service.

4.6.4 Call Forwarding on mobile subscriber Busy (CFB)

4.6.4.1 Network Determined User Busy (NDUB)

Same as the interaction with call forwarding unconditional.

4.6.4.2 User Determined User Busy (UDUB)

Same as interaction with call forwarding no reply.

4.6.5 Call Forwarding on No Reply (CFNRy)

For an incoming call to a subscriber with both CNAP and Call Forwarding on No Reply activated, the calling party name information shall be displayed by the predefined time while the call is alerting.

4.6.6 Call Forwarding on mobile subscriber Not Reachable (CFNRc)

Same as the interaction with call forwarding unconditional.

4.6.7 Call Waiting (CW)

If the served mobile subscriber is provisioned with the CNAP service, the calling party name information shall be displayed to the subscriber at the notification of an incoming (waiting) call as for a normal incoming call.

4.6.9 Explicit Call Transfer (ECT)

For Further Study.

4.6.10 Support of Private Numbering Plan (SPNP)

The public number corresponding to the used PNP number is used to obtain the calling name information for delivery to the called party’s terminal.

4.6.11 Completion of Calls to Busy Subscriber (CCBS)

No interaction.

4.6.12 enhanced Multi-Level Precedence and Pre-emption (eMLPP)

No interaction.

4.7 Service functions for roamers

CNAP should be available to a roaming subscriber. However, the serving system may elect to not offer the CNAP service to any subscriber.

4.8 Interworking considerations

According to national network specific rules, the CNAP supplementary services need not be applicable, if at least one of the two parties is not an ISDN or GSM PLMN subscriber.

Annex A (informative):
Status of GSM 02.96

Status
of
Technical Specification GSM 2.96

Date

Version

Remarks

No phase 1 version

May 1997

version 0.0.1

first daft presented in SMG1-Göteborg

June 1997

version 0.0.2

SMG1-Göteborg: editorial modifications and lay-out

September 1997

version 1.0.0

For information

October 1997

version 1.0.1

Style changed, ETSI new presentation and Standard text blocks added (IPR clause and clause 2 references 1st paragraph). Subclauses 4.6.11-13 renumbered as 4.6.10_12 (subclause 4.6.10 was missing)

October 1997

version 1.1.1

November 1997

version 1.2.0

SMG1-Dresden: editorial modifications. Modifications of sections 4.3.1, 4.3.2, 4.6, 4.6.2, 4.6.8.to incorporate answers to SMG1 questions listed in Tdoc SMG1 506/97. Complete list of answers contained in Tdoc SMG1 541/97 Attachment 1.

December 1997

version 2.0.0

presented at SMG#24 and approved

September 1998

version 6.0.0

version 6.0.0 created as part of Release 1997

October 1998

version 6.0.1

version 6.0.1 created for publication

August 1999

version 7.0.0

Specification version upgrade to Release 1998 version 7.0.0

Rapporteur: Sonia Doshi (Nortel, USA)

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