The OIP service provides the terminating party with the Identity of the originating party. The requirements for Presentation of session originating party identity shall be handled as described in TS 22.228.

The IMS Multimedia Telephony service shall support the interoperability of the OIP service with mobile CS and PSTN/ISDN Supplementary Service CLIP and vice versa. The scope of this interworking may result in a limited service capability (only E.164 numbers can be used in the PSTN/ISDN).

The Originating Identification Restriction (OIR) service enables the originating party to withhold the presentation of its asserted identity information to the terminating party. The requirements for withholding the originators identity shall be as described in TS 22.228. Those requirements also allow certain terminating party to override the restriction (override capability).

The IMS Multimedia Telephony service shall support the interoperability of OIR service with the mobile CS and the PSTN/ISDN Supplementary Service CLIR and vice versa. The scope of this interworking may result in a limited service capability. The Originating Identity Restriction information shall be conveyed from IMS to a mobile CS or a PSTN/ISDN and vice-versa. The network to which the called/terminating party is connected to is responsible to handle this service. In case of limited interoperability, the restriction, OIR/CLIR shall have precedence.

The TIP service provides the originating party with the asserted identity of the terminating party. The requirements for the presentation of the terminating identity shall be as described in TS 22.228.

The IMS Multimedia Telephony service shall support the interoperability of the TIP services with mobile CS and PSTN/ISDN Supplementary Service COLP and vice versa. The scope of this interworking may result in a limited service capability

The Terminating Identification Restriction (TIR) enables the terminating party to withhold presentation of its asserted identity information to the originating party. The requirements for withholding the terminating party's identity are described in TS 22.228. Those requirements also allow certain originating parties to override the restriction (override capability). This service description is based on the service description described in [E-20].

The IMS Multimedia Telephony service shall support the interoperability of the TIR services with mobile CS and PSTN/ISDN Supplementary Services and vice versa. The scope of this interworking may result in a limited service capability. In the case the target network does not support TIR service, the TIP information shall not be forwarded.

The MCID service enables an incoming communication to be identified as malicious and registered. This service may be available to a user only after subscription. Once the user has indicated to the network that the communication is malicious, the IMS shall register at least the following information:

• Terminating Identity Information;
• Originator Identity Information;
• Local Time and Date of the invocation in the network serving the terminating entity;

The information shall not be available to the terminating entity nor the originating entity. The information shall be under the control of the network operator. The user may identify the communication as malicious during the alerting phase, during an ongoing communication, or for a limited period after the communication has ceased.

The MCID service shall interoperate for all communications from a PSTN/ISDN to an IMS Network supporting IMS Multimedia Telephony service and vice-versa. The registered information shall be stored in the invoking party's network and may also be stored in the malicious party's network.

The Anonymous Communications Rejection (ACR) service allows the terminating party to reject incoming communications from originating parties that have restricted their identity presentation. Anonymous communications rejection provides the capability for network, on behalf of the user, to reject incoming sessions from users who have restricted the presentation of their originating identity, i.e. the asserted originating identity is marked "presentation restricted". This service description is based on the service description described in [E-14]. Optional feature

The IMS Multimedia Telephony service shall support the interoperability of the ACR services with PSTN/ISDN Supplementary Services and vice versa. The scope of this interworking may result in a limited service capability.

The following Communication DIVersion services are defined:

• Communication Forwarding Unconditional (CFU).
• Communication Forwarding Busy (CFB).
• Communication Forwarding No Reply (CFNR).
• Communication Forwarding on Not Logged in (CFNL).
• Communication Deflection (CD).
• Communication Forwarding on Subscriber Not Reachable (CFNRc).

For all communications diversion services, a service provider option of notification of diversion may be provided to the originating party. This service provider option may also include support for the invoking user to suppress the notification. As a service option, CDIV services may be associated with a time and/or date setting. To support roaming, the time zone may also be included. As a service option, CDIV services may be associated with the results of spoofed call detection applied to the session originator identity. The use of any of the network determined diversion services on a call identified as a callback to an emergency call, by a user that is not the PSAP, shall be precluded. Communication Forwarding Unconditional (CFU) The CFU service enables a user to have the network redirect all communications to another user. The CFU service may operate on all communication, or just those associated with specified services. The user's ability to originate communications is unaffected by the CFU service. After the CFU service has been activated, communications are forwarded independent of the status of the user. As a service provider option, a subscription option can be provided to enable the user to receive an indication that the CFU service has been activated. This indication may be provided when the user originates a communication if the CFU service has been activated for the user's identity and for the service requested for the communication. The maximum number of diversions permitted for each communication is a service provider option. The service provider shall define the upper limit of diversions. When counting the number of diversions, all types of diversion are included. This service description is based on the service description described in [E-1]. Communication Forwarding Busy (CFB) The CFB service enables a user to have the network redirect communications, which would otherwise be regarded as busy, to another user. The CFB service may operate on all communications, or just those associated with specified services. The user's ability to originate communications is unaffected by the CFB service. As a service provider option, a subscription option can be provided to enable the user to receive an indication that the CFB service has been activated. This indication may be provided when the user originates a communication if the CFB service has been activated for the user and for the service requested for the communication. The maximum number of diversions permitted for each communication is a service provider option. The service provider shall define the upper limit of diversions. When counting the number of diversions, all types of diversion are included. This service description is based on the service description described in [E-2]. Communication Forwarding No Reply (CFNR) The CFNR service enables a user to have the network redirect communications, when the communication request is not responded to within a defined period of time, to another user. The CFNR service may operate on all communications, or just those associated with specified services. The user's ability to originate communications is unaffected by the CFNR service. The CFNR service can only be invoked by the network after the communication has been offered to the user and an indication that the user has been informed of the communication request. As a service provider option, a subscription option can be provided to enable the user to receive an indication that the CFNR service has been activated. This indication may be provided when the user originates a communication if the CFNR service has been activated for the user and for the service requested for the communication. The maximum number of diversions permitted for each communication is a service provider option. The service provider shall define the upper limit of diversions. When counting the number of diversions, all types of diversion are included. This service description is based on the service description described in [E-3]. As a service option, CFNR activation confirmation may include information from the network providing the public identity where the communication will be forwarded to, and the expiry time before the communication is forwarded. As a service option, the user may be allowed to dynamically extend this timing. Communication Forwarding on Not Logged-in (CFNL) The Communication Forwarding on Not Logged-in (CFNL) service enables a user to redirect incoming communications, when the user is not currently registered (logged-in), to another user. The CFNL service may operate on all communications, or just those associated with specified services. As a service provider option, a subscription option can be provided to enable the user to receive an indication that the CFNL service has been activated. This indication may be provided when the user next registers (logs in). An indication may also be provided as part of de-registration (log out). The maximum number of diversions permitted for each communication is a service provider option. The service provider shall define the upper limit of diversions. When counting the number of diversions, all types of diversion are included. Communication Deflection (CD) The CD service enables the user to respond to an incoming communication by requesting redirection of that communication to another user. The CD service can only be invoked before the communication is established by the user, i.e. in response to the offered communication, or during the period that the user is being informed of the communication. The user's ability to originate communications is unaffected by the CD service. The maximum number of diversions permitted for each communication is a service provider option. The service provider shall define the upper limit of diversions. When counting the number of diversions, all types of diversion are included. This service description is based on the service description described in [E-4]. Communication Forwarding on Subscriber Not Reachable (CFNRc) The CFNRc service enables a user to have the network redirect all incoming communications, or just those associated with a specific service, when called mobile subscriber's address is not reachable (e.g. there is no IP connectivity to the user's terminal, or, in the case of a mobile device, it is not in radio coverage), to another address. The CFNRc service may operate on all communications, or just those associated with specified services. The user's ability to originate communications is unaffected by the CFNRc service. As a service provider option, a subscription option can be provided to enable the user to receive an indication that the CFNRc service has been activated. This indication may be provided when the user originates a communication if the CFNRc service has been activated for the user and for the service requested for the communication. The maximum number of diversions permitted for each communication is a service provider option. The service provider shall define the upper limit of diversions. When counting the number of diversions, all types of diversion are included. Optional feature

The IMS Multimedia Telephony service shall support the interoperability of the CDIV service with mobile CS and PSTN/ISDN Supplementary Services and vice versa. The scope of this interworking may result in a limited service capability. The CLI information of the originating party as well as further CLI information (first redirected address, last redirected address) may be provided to the final called party, if the network allows this.