03.783GPPCcustomized Applications for Mobile network Enhanced Logic (CAMEL) Phase 2Release 1998Stage 2TS
The handling of forwarded calls in the GMSC or the terminating VMSC is specified in 3GPP TS 03.18 . The procedures specific to CAMEL are specified in this subclause.
– Procedure CAMEL_CF_MSC_INIT,
– Procedure CAMEL_CF_MSC_ANSWER
– Procedure CAMEL_CF_ETC,
– Procedure CAMEL_CF_CTR,
– Procedure CAMEL_Check_ORLCF_VMSC.
A mobile terminated call can be forwarded either in the GMSC (indicated by provision of Forwarded-To-Number from HLR or gsmSCF) or in the MSC (indicated by provisioning of Forwarded-To-Number from VLR).