Building Telephony Systems With OpenSER: A Step-by-step Guide Ti Building a High-performance Telephony System
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Cisco Ip Telephony: Planning, Design, Implementation, Operation, and Optimization
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VoIP Telephony and You: A Guide to Design and Build a Resilient Infrastructure for Enterprise Communications Using the VoIP Technology (English Edition)
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Asterisk: The Future of Telephony
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Voice over Internet Protocol (VoIP) Security
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Polycom SoundPoint IP 450 with Power Supply
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Building Enterprise Ready Telephony Systems With Sipxecs 4.0
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Cisco AVVID and IP Telephony Design and Implementation
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VoIP: Internet Linking for Radio Amateurs
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Handbook of SDP for Multimedia Session Negotiations: SIP and WebRTC IP Telephony
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