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VoIP Books - VoIP References | IP Communications

Product image Title Author(s) Publisher Lowest price (formatted)
Internet Communications Using SIP Alan B. Johnston, Henry Sinnreich Wiley $27.04
SIP Beyond VoIP: The Next Step in the IP Communications Revolution Robert J. Sparks, Alan B. Johnston, Henry Sinnreich VON Publishing LLC $27.81
SIP Demystified Gonzalo Camarillo McGraw-Hill Education $40.08
SIP: Understanding the Session Initiation Protocol, Second Edition Alan B. Johnston Artech House $50.39