The road to IP telephony how cisco systems migrated from PBX to IP telephony

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Bibliographic Details
Main Author:	Carhee, Stephanie L
Corporate Author:	Cisco Systems Inc
Format:	Book
Published:	Indianapolis, Ind. Cisco Press 2004
Series:	Network business series
Subjects:	Internet telephony Telephone > Private branch exchanges
Online Access:	Click Here to View Status and Holdings.
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