SIP APPLICATIONS
SIP for Local Exchange Networks
So what will SIP do for you?
SIP offers solutions for certain problems specific to Local Exchange Carriers.
Adding Lines Without Adding Copper
Rural and independent LECs serve various institutional customers, from municipal buildings
to schools and businesses. Many of these customers are demanding more communication services -
more lines, more capability.
At the same time, LECs are in the broadband business, bringing high-speed IP services to these
same customers.
SIP enables telephony through the same broadband pipe that carries data, and the bandwidth
demanded by even an uncompressed call is relatively small, less that 0.1 Mbs. The main quality impairments
when IP calls are made through a managed network are due to dropouts caused by large data packets. These
impairments can be managed with simple QOS settings.
Breaking the Traditional Serving Area
SIP enables LECs to offer dialtone into neighboring territories over the Internet.
Rural and independent LECs usually serve relatively low-density areas that are nearby to high-density
cities and towns served by Verizon or ATT. SIP and the Internet allow a small LEC to penetrate the
neighboring territory without the expense of co-location. Even a small penetration of a higher-density
territory can add substantially to the LEC's existing subscriber base. And IP calls are pre-empted from state
regulation as an "information service".
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