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Trouble Symptom:
Site: Main PBX with DMR site 01.
Echo when voice calling a TDM station in the DMR.

A TDM Dterm makes a voice call to a TDM station in the DMR.
Tech tried different combinations in CM6702 but still got echo.
NTAC recreated and tried setting CM42<47 & CM42<68 and problem was
reduced. Explained to tech that the echo is because the speaker volume is
high and the speaker is feeding back into the mic. Over IP this is
exagerrated due to the slight delay.

Modification Treatment:
• S/Revision:R12.2 M1 1.03 Fix Revision: R12.2 M1 4.05

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