VoIP Supplementary Services Descriptions: Call Forwarding Busy

Transcription

1 GPP S.R0--0 Version.0 Version Date: April 00 VoIP Supplementary Services Descriptions: Call Forwarding Busy COPYRIGHT GPP and its Organizational Partners claim copyright in this document and individual Organizational Partners may copyright and issue documents or standards publications in individual Organizational Partner's name based on this document. Requests for reproduction of this document should be directed to the GPP Secretariat at Requests to reproduce individual Organizational Partner's documents should be directed to that Organizational Partner. See for more information.

2 Revision History Revision Date Rev. 0 v.0 Initial Publication April 00 Notes:

3 S.R0--0 v Contents VoIP Supplementary Services Descriptions: Call Forwarding-Busy List of Tables...ii Call Forwarding Busy (CFB).... Normal Procedures with Successful Outcome.... Exception Procedures or Unsuccessful Outcome.... Alternative Procedures.... Interactions with Other Wireless Services... -i Contents

4 S.R0--0 v.0 List of Tables Table : CFB Subscription Options List of Tables -ii

5 S.R0--0 v Call Forwarding Busy (CFB) Call Forwarding Busy (CFB) permits a called subscriber to have the system send incoming calls addressed to the called subscriber s public identity to another public identity (forward-to identity) or to the called subscriber s designated message box, when the subscriber is considered to be busy. CFB does not impact a subscriber s ability to originate calls. A subscriber may select a forward-to identity when the subscriber registers the CFB.. Normal Procedures with Successful Outcome Authorization CFB may be generally available or may be provided after prearrangement with the service provider. The authorization may have the following subscription options: Deauthorization Table : Subscription Options Registration Activation CFB Subscription Options Values Variable. The subscriber is authorized to specify his or her own forward-to identity. Fixed. Forward-to identity is registered upon authorization. Demand. The subscriber is authorized to control the activation and deactivation of CFB. Permanent. CFB is active while authorized. CFB may be withdrawn at the subscriber s request or for administrative reasons. Registration If the subscriber is authorized for Fixed Registration, the forward-to identity shall be registered upon authorization. The CFB forward-to identity may be registered by the service provider upon authorization for Variable Registration subscribers. CFB may be registered by a Variable Registration authorized subscriber specifying the CFB registration feature code and a forward-to identity or voice message system, as in: *FC + forward-to identity, or - Call Forwarding Busy (CFB)

6 S.R0--0 v.0 *FC + (Voice message system). If the registration is accepted, the system shall indicate success with feature confirmation treatment. Registration associates the subscriber with the forward-to identity or with a particular voice mailbox on a voice message system. Voice mailbox passwords are registered separately with the voice message system. Deregistration CFB may be deregistered upon deactivation (at the home service provider option). If the deregistration is to be separate from deactivation, the deregistration feature code must be distinct from the corresponding deactivation feature code. CFB may be deregistered by a Variable Registration authorized subscriber specifying the CFB deregistration feature code, as in: *FC0 CFB shall be deregistered upon deauthorization. Activation If the subscriber is authorized for Permanent Activation, CFB shall be activated upon authorization. CFB may be activated upon registration for Demand Activation authorized subscribers. CFB may be activated upon registration for Variable Registration authorized subscribers. A previously registered CFB forward-to identity may be activated by a Demand Activation authorized subscriber specifying a CFB activation feature code, as in: *FC If the activation is accepted, the system shall indicate success with feature confirmation treatment. The serving system may provide a courtesy call to the forward-to identity shortly after this feature is activated permitting the subscriber to verify the validity of the forward-to identity. Deactivation CFB may be deactivated by a Demand Activation authorized subscriber specifying the CFB deactivation feature code, as in: *FC0 0 0 Call Forwarding Busy (CFB) -

7 S.R0--0 v If the deactivation is accepted, the system shall indicate success with feature confirmation treatment. CFB shall be deactivated upon deauthorization or deregistration. Invocation The feature treatment is invoked when there is an incoming call while the subscriber is considered to be busy and CFB is active. Normal Operation with Successful Outcome When CFB is active, incoming calls for the subscriber shall be forwarded to the forward-to identity when the subscriber is considered to be busy. Accounting Record The system should record accounting information for the following: a. CFB registration activities and events. b. CFB deregistration activities and events. c. CFB activation activities and events. d. CFB deactivation activities and events. e. CFB invocation events. f. Forward-to call duration.. Exception Procedures or Unsuccessful Outcome Registration If the subscriber is not authorized for the request, or if the forward-to identity is not acceptable, the system shall apply feature denial treatment when registration is attempted. The system should not accept forward-to identities to the operator (0- or 0+), service codes (N), police, fire or similar agencies. Deregistration If the subscriber is not authorized for the request, the system shall apply feature denial treatment when deregistration is attempted. Activation If the subscriber is not authorized for the request, or if a forward-to identity is not properly registered, the system shall apply feature denial treatment when activation is attempted. - Call Forwarding Busy (CFB)

8 S.R0--0 v.0 If the courtesy call to the forward-to identity cannot be routed, then the call should be given the appropriate treatment, such as playing announcement to the registering subscriber. Since the validity of the forward-to identity is in doubt, CFB may be deregistered and deactivated. Courtesy calls need not be answered to verify the validity of the forward-to identity. Deactivation If the subscriber is not authorized for the request, the system shall apply feature denial treatment when deactivation is attempted. Invocation If the forwarded call cannot be routed to the forwarded-to destination, then the call should be given the appropriate treatment, such as sending proper response back to the calling party. Precautions should be taken to preclude undesirable looping of forwarded identities. If such looping is detected, the call forwarding should be given the appropriate treatment, such as sending proper error response back to the calling party.. Alternative Procedures None identified.. Interactions with Other Wireless Services No interactions have been identified with the following exceptions: Call Forwarding Default (CFD) CFB takes precedence over CFD. That is, calls arriving to a busy subscriber with CFB and CFD active shall be forwarded by CFB and not given CFD treatment. Call Forwarding No Answer (CFNA) CFB is mutually exclusive with CFNA. That is, calls arriving to a busy subscriber with CFB and CFNA active shall be forwarded by CFB and not given CFNA treatment. Calls arriving to a subscriber with CFB and CFNA active shall be forwarded by CFNA and not given CFB treatment if the subscriber is not busy and does not answer the call. Call Forwarding Unconditional (CFU) CFU takes precedence over CFB. That is, calls arriving when CFU is active shall be forwarded unconditionally and not given CFB treatment. 0 0 Call Forwarding Busy (CFB) -

9 S.R0--0 v Call Waiting (CW) CW is invoked before CFB. If a call arrives for a busy subscriber able to receive another call, the called subscriber has both CW and CFB active, and no call is already waiting to be answered; the call is presented to the subscriber with CW notification. If the CW call is not accepted, CFB is not invoked. If a call arrives for a busy subscriber, the called subscriber has both CW and CFB active, and if the called subscriber is unable to receive another call or has a call waiting to be answered; the call shall be forwarded immediately by CFB. Calling Identification Presentation (CIP) If the called subscriber has CIP active, the calling identity may be presented to the called subscriber during call forwarding indication according to CIP s procedures. If the forwarded-to user has CIP active and the original calling party does not have CIR active, the original calling identity shall be presented to the forwarded-to user. Calling Identification Restriction (CIR) If the calling identity indicates presentation restricted, the calling identity shall not be presented to the called party or the forward-to party. If the called (redirecting) subscriber has CFB invoked and either the CIR mode is Permanently Restricted or the CIR Default is Presentation Restricted, the redirecting identity shall indicate presentation restricted to prevent presentation to the forward-to party. Customized Ring-Back Tone (CRBT) Before the call is forwarded, the calling party shall be presented with the original called party s CRBT if available. When the call is forwarded, the called party s network shall continue to present the called party s CRBT to the calling party until a signaling indication is received from the forwarded-to party s network regarding the availability of media. If the forwarded-to party has CRBT based on calling party s identity, then the CRBT should be played based on the original calling party s identity. Flexible Alerting (FA) Interaction between FA and CFB is beyond the scope of this Standard. The following describes a possible implementation: CFB of the FA Pilot Identity shall apply to calls to the Pilot Identity when CFB is active and the FA group is considered to be busy. - Call Forwarding Busy (CFB)

10 S.R0--0 v.0 CFB for the FA pilot identity takes precedence over CFB of the individual FA members. That is, if both the FA pilot identity and an FA member have CFB active, CFB treatment is determined by the FA pilot identity. Inbound Call Restriction (ICR) / Anonymous Call Rejection (ACR) ICR and ACR take precedence over CFB. If an incoming call arrives for a subscriber with ICR and CFB active, the call is screened by ICR/ACR first. If the call is not blocked by ICR/ACR, an attempt is made to deliver the call to the subscriber. If the subscriber is busy, then CFB is invoked. Outbound Call Restrictions (OCR) Registering a call forwarding identity to an identity blocked by the OCR service should be precluded. If the forwarding user s call to the forwarded-to user is restricted by OCR, then the attempt to forward the call to the forwarded-to user shall be rejected. Terminating Identification Presentation (TIP) If the calling subscriber has TIP active, the forwarded-to identity should be presented to the calling subscriber according to TIP procedures. If the original called party does not have TIR active, the original called identity may also be presented to the calling subscriber. Terminating Identification Restriction (TIR) If the forwarded-to subscriber has TIR active, the forwarded-to identity shall not be presented to the calling subscriber. If the original called party has TIR active, the original called identity shall not be presented to the calling subscriber. 0 0 Call Forwarding Busy (CFB) -