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<p class=MsoNormal>CM: 6.13<o:p></o:p></p>
<p class=MsoNormal>3845: 12.4(22)T1<o:p></o:p></p>
<p class=MsoNormal>ISDN PRI<o:p></o:p></p>
<p class=MsoNormal>Phones: 7942 load 8.4(4)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>voice-port 0/1/0:23<o:p></o:p></p>
<p class=MsoNormal> input gain -2<o:p></o:p></p>
<p class=MsoNormal> output attenuation 3<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Strange situation here. I have a Call Center with about 80
users. This is an Inside Sales group so they talk to a lot of the same callers.
We have identified about 6 PSTN numbers where the Cisco phones have echo
every single call. The IP Phone user hears their voice echoed back. Echo
persists for the entire call. When the users talk to other callers they have no
echo. A phone call to one of these PSTN numbers from another Cisco phone has
the same echo.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Anyone had any luck with “echo-cancel erl worst-case 3”
?<o:p></o:p></p>
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