IP-Telephony The Chicago Way

Krapf, Eric
December 2006
Business Communications Review;Dec2006, Vol. 36 Issue 12, p12
Trade Publication
The article discusses the Chicago Public Schools system's adoption of IP-telephony technology. The city of Chicago expects to save $6 million a year as it moves from Centrex to premises-based IP-telephony services, which are cheaper to maintain and require much fewer service costs. The school district utilizes a hub-and-spoke structure for their IP-telephony network, with 75 hub sites serving an average of eight schools per hub, with each linked to the Public Switched Telephone Network with a pair of PRIs, as a backup for loss of service.


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