ir2525 fax issues

[dqydj]

anyone had any luck with the ir2525 faxing over a voice over IP connection.
Tried everything I can think of but it just doesn't work. Customer has a brother
mfp that sends and receives just fine over the VOIP connection.

[teckat]

All Fax Capable imageRUNNER Models, All Laser Class Series Voice Over IP and Fax Communication.
Will Canon Fax equipment work on a voice over IP circuit, (VoIP) ?
Canon fax equipment will work on any circuit that meets the specification of a voice grade line.

There are special considerations for fax communication over a VoIP circuit. The ITU, (International Telecommunications Union), has established a standard for this type of communication. It is known as the T.38 standard. If you connect your fax in a VoIP circuit and experience difficulty, you may want to make sure the circuit meets the T.38 standard.

For a detailed description of the T.38 standard which governs fax communication on a VoIP circuit, please click the following link.

T.38 - voip-info.org

Canon USA

Canon recommends (and is stated in the specs) a dedicated PSTN (public switched telephone network) connection - that is an actual, factual copper line from the phone company. Not a virtual-reality connection from the cable company.
www.voip-info-org = navigate to the section entitled "Protocols used with VOIP" .

http://www.voip-info.org/wiki/view/V...Providers+T.38

[D_L_P]

I had a similar question earlier and the general consensus was to turn off ECM

Check it out here:

http://www.copytechnet.com/forums/connectivity/41567-voip-faxes.html