09-02-2009 10:51 PM - edited 03-13-2019 06:37 PM
Hi,
We have 2801 CME router. Also I connected a fax to this CME. But it gives communication error when sending fax and sometimes receiving. I tried with ATA and FXS ports but still the same problem. When I connect an analog phone to this line I can make calls and receive calls. Also when I connect directly analog line to fax (no cme) it works no problem. What can be the problem ? (Also I tried with two faxes) Can there be a software bug?
Thanks
(C2801-SPSERVICESK9-M), Version 12.4(20)T1, RELEASE SOFTWARE (fc3)
09-03-2009 04:39 AM
You can try this on the line:
input gain -3
output attenuation 5
Sometimes this configuration helps.
-nick
09-08-2009 12:40 PM
Kindly attach the config.
09-28-2009 10:38 PM
Hi,
FAXes can be particularly picky when it comes to line quality. Especially G3 faxes are a nightmare in an IPT environment.
I've been able to get some faxes working by disabling ECM (error correction mode) on it. As far as I know, this is only for sending. So this means that someone trying to send a fax to one of your fax machines would have to disable ECM on theirs.
See also http://www.voipmechanic.com/faxsettings.htm for some background.
Hope this helps!
Best regards,
Donald.
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: