VoIP SS7

What is SS7?

SS7 signalling is the core signalling/control protocol used within fixed and mobile networks. The SS7 network is both a high speed and high availability network providing the backbone of all telephony networks worldwide. All major networks around the world use SS7 to provide their major services including POTS (Plain Old Telephony Service), Intelligent Networking, LNP (Local Number Portability), 0800, Wireless, SMS and a whole host of other services. The following is a brief overview of the different SS7 architectures.

SS7 (or C7) is the main signalling for PSTN interconnections. How do we interface between a SS7 network and a SIP network?