6 Exceptional procedures or unsuccessful outcome

22.0673GPPenhanced Multi Level Precedence and Pre-emption service (eMLPP)Stage 1TS

When a service subscriber makes a call, he expects the network to automatically invoke the eMLPP service according to her subscription. If the network cannot provide the service for some reason an indication shall be provided to the service subscriber to notify her of the absence or modification of the priority handling.

Exceptional procedures for voice group call and voice broadcast call establishment durations exceeding the specified times are given in 3GPP TS 42.068 [5] and 3GPP TS 42.069 [6], respectively.