here is that you have voice packets running over IP. However, the packets are not running on the Internet, and you're not gaining any of the features and capabilities you get by converging voice and data networks IP PBXs IP PBXs are great if you have the luxury of designing your system from the ground up. They are complete phone systems, usually with options that include many of the IP telephony Elgin 56k , Elgin, OR 56k ElginElgin , 56k Oregon, Elgin 56k
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