DecodingTelecoms - Term of the week
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P-CSCF Proxy - Call Session Control Function
The P-CSCF acts as the ingress and egress point to and from a service provider's IMS domain with respect to the IMS client. The P-CSCF has a large number of responsibilities, including: onward routing of registration and session requests to the correct nodes in the network, ensuring the S-CSCF (Serving CSCF) is kept updated on the access network the subscriber is using, providing session information to the PCRF (Policy and Charging Rules Function) and maintaining a secure connection with the client device.
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