3 Definitions, symbols and abbreviations

22.1353GPPMulticallRelease 17Service descriptionStage 1TS

3.1 Definitions

CS Call: Circuit switched call. A call routed through CS domain. CS call can be for example a speech call, fax call or data call. One call shall only use one bearer at the time

Multiparty: Supplementary Service for speech conference service

N_cs MO: maximum number of simultaneous mobile originating CS calls. The value of The Value of N_{cs_}MOis 7. If N_{cs_}MO has been reached, no more MO calls can be set–up

N_{CS_}MT: Maximum number of simultaneous mobile terminating CS calls. The value of N_{CS_}MT is 7. If N_{CS_}MT has been reached, additional MT call attempts shall fail without any indication to the called subscriber

N_br: Maximum number of simultaneous CS bearers. The value of N_br is the smallest value within the N_br_User, N_br_UE, and N_br_SN

N_br_User: Maximum number of simultaneous CS bearers allowed, as defined by the user within the limits given by N_br_SB

N_br_SB: Maximum number of simultaneous CS bearers allowed, defined by the service provider in the Multicall subscription

N_br_UE: Maximum number of simultaneous CS bearers supported by the UE

N_br_SN: Maximum number of simultaneous CS bearers supported by the serving network