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Reply To: Echo problem on MSC & BSC


1) Cross-talk is possible on Air Interface too as someone explained(when ciphering deactivated).Make Sure your MO authentication is activated when u enable ciphering.

2) Make Sure your BCCH and BSIC combination is Unique.

3) Check with ur Trau modules(Code) Maye be the PCM Timeslot is Overwritten.

4)CIC -mismatch can be a reason too.