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Centrex or PBX The Impact of IP

Автор: Bo0mB0om » 13 августа 2016

[center]Centrex or PBX The Impact of IP
[b]Centrex or PBX: The Impact of IP (Telecommunications Library) by John R. Abrahams[/b]
English | 1 Mar. 2003 | ISBN: 158053497X | 161 Pages | CHM | 4 MB

A reference for those who are responsible for designing, upgrading and managing data networks to carry IP telephony (voice, video and data); or for those who need help in evaluating competing IP-Centrex and IP-PBX systems; or for those who need guidance in specifying the parameters for a service level agreement for IP-Centrex.


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