SIP State Of Affairs
by Steven Guthrie
Posted 9/2004; Published 04/2004




Thanks to Microsoft, IBM and MCI, among others, SIP (the Session Initiation Protocol) has become a telecom term with widespread recognition. Recently Avaya, Cisco, Lucent Technologies, NEC and others have announced significant SIP products.


SIP is now central to all the latest solutions for telephony, ranging from hosted services to vendor-proprietary platforms, from handsets and softphones to open source software. This article highlights these and other recent SIP-related advances.


About the author:

Steven Guthrie is the former director of marketing at Pingtel, one of the pioneering SIP product developers, and now an independent consultant.



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