PS: CLECS are notorious for using channel bank (For example: Adtran Total-Reach 750) equipment that does not regenerate the LEC receive signal when equipped with a plain old vanilla DSX-1 LIU module. as for DS1 (T1's) in general, payload is payload. Regardless of what type of information a T1 carries, voice or Data (To a DS1 line payload it all data) the rules for T1 design remain the same.

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