The Big Idea

Virtually every communications service provider on the planet is engaged (at some level) in a transition from a legacy TDM circuit-switch network built on TCAP and ISUP signaling to a next-generation multi-service core based on SIP and DIAMETER signaling.  As an industry, we’ve been making slow but patient progress in Read more…

IMS to PSTN Interworking

Guest Author:  Pieter Veenstra – Architect Voice Solutions – KPN. Pieter Veenstra is lead architect at KPN with over 25 years of experience in the architectural design of voice solutions.  Past roles at KPN included automated test bed design, protocol specification of SS7, and 15 years representing KPN in ETSI and ITU-T standardization with 6 years as chairman of an Read more…