Section: 4.7.13.1 Service Request procedure initiation
Content: The MS initiates the Service request procedure by sending a SERVICE REQUEST message. The timer T3317 shall be started after the SERVICE REQUEST message has been sent and state GMM-SERVICE-REQUEST-INITIATED is entered. The message SERVICE REQUEST shall contain the P-TMSI and the Service type shall indicate either "data", "signalling", "paging response", "MBMS multicast service reception" or "MBMS broadcast service reception". The MS shall not issue another Service request when the MS is in state GMM-SERVICE-REQUEST-INITIATED If the PDP context status information element is included in the SERVICE REQUEST message, then the network shall deactivate all those PDP contexts locally (without peer to peer signalling between the MS and the network) which are not in SM state PDP-INACTIVE on the network side, but are indicated by the MS as being in state PDP-INACTIVE. If the MBMS context status information element is included in the SERVICE REQUEST message, then the network shall deactivate all those MBMS contexts locally (without peer to peer signalling between the MS and network) which are not in SM state PDP-INACTIVE on the network side, but are indicated by the MS as being in state PDP-INACTIVE. If no MBMS context status information element is included, then the network shall deactivate all MBMS contexts locally which are not in SM state PDP-INACTIVE on the network side. For a Service Request of type "data", the MS may include the Uplink data status information element in the SERVICE REQUEST message. The Uplink data status information indicates which preserved PDP contexts have pending uplink data to be sent. If the Uplink data status information element is included in the SERVICE REQUEST message with service type "data", the network may use this information to determine which of the RABs for the preserved PDP contexts to re-establish.