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IP Dual Port PBXgateway and Remote System Administrator’s Guide
84
echo. If you experience a slight echo on all external calls, but it goes away after a
second or two, that is normal with analog trunk lines. If you have analog trunks on
your PBX, the echo canceller frequently takes a second or two to detect levels of
what is echo and what is voice, and then it starts to cancel the echo. The only
way to eliminate that situation is to replace your analog trunks with digital trunk
lines.
Document Number: M-4100-MUC
Version: Rev AA
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