The 3CX IP PBX tutorial : develop a fully functional, low cost, professional PBX phone system using

Landis, Matthew M.
Birmingham, U.K. : Packt Pub., 2010.

Asterisk 1.6 : build feature-rich telephony systems with Asterisk

Merel, David.
Birmingham, U.K. : Packt Pub., [2009]

Asterisk Gateway Interface 1.4 and 1.6 programming : design and develop Asterisk-based VoIP telephon

Simionovich, Nir.
Birmingham, U.K. : Packt Pub., 2009.

Asterisk hacking : toolkit and liveCD

Jackson, Benjamin.
Burlington, MA : Syngress, [2007]

Building a VoIP network with Nortel's multimedia communication server 5100

Chafflin, Larry.
Rockland, MA : Syngress Pub., 2006.

Building telephony systems with OpenSER : a step-by-step guide to building a high-performance teleph

Goncalves, Flavio E., 1966-
Birmingham : Packt Pub., [2008]

Building telephony systems with OpenSIPS 1.6 : build scalable and robust telephony systems using SIP

Goncalves, Flavio E., 1966-
Birmingham, U.K. : Packt Pub., [2010]

Building Telephony Systems with OpenSIPS - Second Edition.

Goncalves, Flavio E., author.
[Place of publication not identified] : Packt Publishing, 2016.

The call heard 'round the world : Voice over Internet Protocol and the quest for convergence

Greenblatt, David.
New York : AMACOM, American Management Association, [2003]

Centrex or PBX : the impact of IP

Abrahams, John R.
Boston : Artech House, [2003]

Cisco Unified Communications Manager 8 : expert administration cookbook : over 110 advanced recipes

Ezell, Tanner.
Birmingham, UK : Packt Pub./Enterprise, [2012]

Configuring Cisco voice over IP

Rockland, MA : Syngress Media, [2002]

FreePBX 2.5 powerful telephony solutions : configure, deploy, and maintain an enterprise-class VoIP

Robar, Alex.
Birmingham, UK : Packt Pub., 2009.

FreeSWITCH 1.0.6 : build robust high performance telephony systems using FreeSWITCH

Minessale, Anthony, II.
Birmingham, U.K. : Packt Open Source, 2010.

FreeSWITCH 1.2 : build robust, high-performance telephony systems using FreeSWITCH

Birmingham : Packt Pub., 2013.
2nd ed.

FreeSWITCH cookbook : over 40 recipes to help you get the most out of your FreeSWITCH server

Birmingham, U.K. : Packt Open Source, [2012]

Getting started with WebRTC : explore WebRTC for real-time peer-to-peer communication

Manson, Rob.
Birmingham, UK : Packt Pub., 2013.

Google talking

Baskin, Brian.
Rockland, MA : Syngress ; Oxford : Elsevier Science [distributor], [2007]

An Improved Lightweight Privacy Preserving Authentication Scheme for SIP-Based-VoIP Using Smart Card

Jan, Saeed Ullah.
Hamburg : Diplomica Verlag, 2017.

Internet telephony

Cambridge, Mass. ; London : MIT Press, [2001]

IP convergence : the next revolution in telecommunications

Muller, Nathan J.
Boston : Artech House, [2000]

Learning Adobe Connect 9.

Radovanović, Miloš.
Birmingham, UK : Packt Pub., 2013.

Location and personalisation : delivering online and mobility services

London : Institution of Electrical Engineers, [2004]

Signaling and switching for packet telephony

Stafford, Matthew, 1958-
Boston : Artech House, 2004.

Skype me! : from single user to small enterprise and beyond

Gough, Michael, 1963-
Rockland, Mass. : Syngress, 2006.

Voice over 802.11

Ohrtman, Frank.
Boston : Artech House, [2004]

Voice over IPv6 : architectures for next generation VoIP networks

Minoli, Daniel, 1952-
Amsterdam ; Boston : Elsevier/Newnes, [2006]

Voice over WLANs : the complete guide

Finneran, Michael F.
Amsterdam ; Boston : Elsevier/Newnes, [2008]

Wi-Fi telephony : challenges and solutions for voice over WLANs

Chandra, Praphul.
Amsterdam ; Boston : Elsevier/Newnes, [2007]