Towards junking the PBX: deploying IP telephony

Authors:
Wenyu Jiang;Jonathan Lennox;Henning Schulzrinne;Kundan Singh
Affiliations:
Department of Computer Science, Columbia University, 1214 Amsterdam Ave, Mail Code 0401, New York, NY;Department of Computer Science, Columbia University, 1214 Amsterdam Ave, Mail Code 0401, New York, NY;Department of Computer Science, Columbia University, 1214 Amsterdam Ave, Mail Code 0401, New York, NY;Department of Computer Science, Columbia University, 1214 Amsterdam Ave, Mail Code 0401, New York, NY
Venue:
NOSSDAV '01 Proceedings of the 11th international workshop on Network and operating systems support for digital audio and video
Year:
2001

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Abstract

We describe the architecture and implementation of our Internet teleph ony test-bed intended to replace the departmental PBX (telephone switch). It interworks with the traditional telephone networks via a PSTN/IP gateway. It also serves as a corporate or campus infrastructure for existing and future services like web, email, video and streaming media. Initially intended for a few users, it will eventually replace the plain old telephones from our offices, due to the cost benefit and new services it offers. We also discuss common inter-operability problems between the PBX and the gateway.