Section: G.6 Additional cause codes for GMM
Content: Cause value = 7 GPRS services not allowed This cause is sent to the MS when it is not allowed to operate GPRS services. Cause value = 8 GPRS services and non-GPRS services not allowed This cause is sent to the MS when it is not allowed to operate either GPRS or non-GPRS services. Cause value = 9 MS identity cannot be derived by the network This cause is sent to the MS when the network cannot derive the MS's identity from the P-TMSI/GUTI, e.g. because no matching identity/context can be found in the network. Cause value = 10 Implicitly detached This cause is sent to the MS either if the network has implicitly detached the MS, e.g. some while after the mobile reachable timer has expired, or if the GMM context data related to the subscription dose not exist in the SGSN e.g. because of a SGSN restart, or because of a periodic routing area update request routed to a new SGSN. Cause value = 14 GPRS services not allowed in this PLMN This cause is sent to the MS which requests GPRS service, or if the network initiates a detach request in a PLMN which does not offer roaming for GPRS services to that MS. Cause value = 16 MSC temporarily not reachable This cause is sent to the MS if it requests a combined GPRS attach or routing are updating in a PLMN where the MSC is temporarily not reachable via the GPRS part of the network. Cause value = 28 SMS provided via GPRS in this routing area This cause is sent to the MS if the SGSN decides not to establish a Gs association since the MS is supposed to send and receive short messages via GPRS. Cause value = 40 No PDP context activated This cause is sent to the MS if the MS requests an establishment of the radio access bearers for all active PDP contexts by sending a SERVICE REQUEST message indicating "data" to the network, but the SGSN does not have any active PDP context(s).