[Asterisk-Users] Re: Polycom 501 horrible echo

[Ron Senykoff]

> > One thing I was pondering: you are not, by chance, using the same
> > sip.cfg between version 1.4.1 and version 1.6.2 are you?  The file has
> > changed significantly between these versions, and certain acoustic
> > settings that worked with 1.4.1 may not work with 1.6.2 (Not to mention
> > that ipmid.cfg and sip.cfg were merged in the 1.5.x release).
>
> That has got to be the problem! I'll let you know how the results go.

Upgrading to the correct sip.cfg fixed the problem. The Polycoms are
back to their great speakerphone-ness. A gotcha is that the new
sip.cfg now contains ntp settings. You'll need to modify these to fit
your timeserver setup.

-Ron