CAMEL
Customized Application for Mobile network Enhanced Logic
CAMEL (Customized Application for Mobile network Enhanced Logic) application servers were introduced to mobile networks in order to supporting IN (Intelligent Networks) services such as prepaid billing. CAMEL application servers based on CAP (CAMEL Application Part) require an IMS SSF (Service Switching Function) in order to operate on a SIP (Session Initiation Protocol) based network (the SSF acts as a SIP to CAP gateway).