The 8681 AGCF is a software platform that can be deployed on industry standard hardware to interconnect between a H.248 enabled device that interacts with the v5.2 or ISDN network and SIP peer devices in an IMS or SIP core network. It implements the requirements of a PSTN Emulation Subsystem (PES) as defined in the ETSI standard TS 183 043. It has been deployed globally since 2007 and manages millions of subscriber lines per day.
