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SIP Trunking

SIP Trunking

by Christina Hattingh, Darryl Sladden, ATM Zakaria Swapan

Most large enterprises have switched to IP telephony, and service provider backbone networks have largely converted to VoIP transport. But there's a key missing link: most businesses still connect to their service providers via old-fashioned, inflexible TDM trunks. Now, three Cisco experts show how to use Session Initiation Protocol (SIP) trunking to eliminate legacy interconnects and gain the full benefits...

Price:  $12.86  |  Publisher:  Cisco Press  |  Release:  2010

Pro Ubuntu Server Administration

Pro Ubuntu Server Administration

by Sander van Vugt

Pro Ubuntu Server Administration teaches you advanced Ubuntu system building. After reading this book, you will be able to manage anything from simple file servers to multiple virtual servers to high - availability clusters. This is the capstone volume of the Apress Ubuntu trilogy that includes Beginning Ubuntu Linux, Third Edition and Beginning Ubuntu Server LTS Administration: From Novice to Professional,...

Price:  $25.54  |  Publisher:  Apress  |  Release:  2008

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