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IM-SSF

Description

One of the challenges operators have in introducing the IP Multimedia Subsystem (IMS) is the cost and risk of introducing something new into an existing network that includes a vast array of revenue-generating services already. Operators cannot re-platform their entire services layer when they introduce the IMS, and certainly their IMS subscribers will not accept a reduction in the number and quality of services.

The IM-SSF addresses this migration problem by allowing access to the existing CAMEL service environment from the IMS — so that IMS users can use services implemented on the IN. The standards-based definition of the IM-SSF, from 3GPP, notes that it translates between the ISC interface (from the S-CSCF) and the "Camel Service Environment" using CAPv3.


Categories

Technologies

SS7: CAP
IMS: SIP



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