So, the idea is to minimize gear in the remote sites and get rid of any remote gateways. The math is really significant to use digital gateways. That's because the hardware costs less per port than analog, and because the PSTN lines cost less in a digital package (T1 or E1) than they do as individual analog circuits. Maintenance on centralized devices and centralized applications is going to cost less too.
In this way customers can concentrate functionality as one would any other software application.
With Radical Telephony , customers get both lower ongoing costs and lower capital costs.
This is radical in telephony because the approach that customers have been forced to accept is to deploy equipment in every remote location. That was traditionally done to overcome the limitations of digital technology. Being a Direct Current-based technology, there is no mechanism for distribution and re-energizing a signal in digital networks. In Ethernet and IP, there is a well accepted and low cost method – use routers to transmit across WANs.
Furthermore, with SIP PBX systems like the 3Com VCX IP Telephony module, call control is centralized in a server, but the packet stream goes the shortest path between the end points. And if G.729 is used with support for silence suppression, the packet stream is quite manageable.
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