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It is used for originating and receiving tails and two-way service.

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Posted by waqqas1

It allows for the connection of MTS and WATS carriers at the end office. It is used for originating and receiving tails and two-way service.

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Posted by ravi_195

A trunk-side switched access connection that directly links local phone company end offices with the long distance network of AT&T. Only AT&T has Feature Group C access connections, which offer the highest transmission quality and a complete array of access features for originating and terminating long distance traffic.

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Posted by sagitraz