A lot of people want to know is it possible to build enterprise open source VoIP solution is good and whether to do so, the answer is not only possible, but also an Asterisk is unique is that it is an open source IP phone platform, not only as an Asterisk server IP call signal (sometimes referred to as IP PBX), and it also as a traditional TDM/analog PBX, and seamless bridge between the two environments, Asterisk benefit is that it has its own unique IAX protocol, which makes you in a T1 or frame relay connected to the Internet to provide more than 180 VoIP session, and a standard of T1 can only support article 23 voice channel,
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