Hi

I know that all echo cancelers are supposed to shut down when they hear the CNG or CED fax tone. Is this always a good thing ? I know that T.30 is supposed to be half duplex, so echo should not be there but in my session recordings, I have seen both sides trying to send at the same time (is that a sign of some other bad thing?)

What if my T.30 fax is failing due to echo ?

Check out this article
http://connectedplanetonline.com/mag/telecom_oil_water_fax/


Thanks,
Anita.