[cisco-voip] Where's the echo?

[Voll, Scott]

I have this setup

 

PSTN - (VGW ---central site- CM) ----- T1 ---(remote location) - VGW ---
PSTN

 

If I call out the PSTN from the central site to the remote location via
the PSTN, I at the central location here echo.  Where's the echo
problem?  Central site?

 

This is a new remote location.

 

Thanks

 

Scott

 

PS.  Central site has PRI's w/ 128ms echo cancellation and the remote
site has FXO ports with 64ms echo cancellation.  All is running MGCP and
CM 4.1.3sr1

 

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