Tobias Wolf wrote: > If it is not possible, why is that so ? Is there really no need to do this > and i > am totally mistaken?
This is generally true. Any standards-compliant FAX machine or modem will generate a CED tone during the beginning of the call process, and any standards compliant echo canceler (including the ones in Zaptel/DAHDI) will respond to this tone by disabling the echo canceler. With Zaptel/DAHDI and a software echo canceler, you can see the evidence of this by watching the kernel message log for messages of the form 'Disabled echo canceler because of tone (..) on channel...". If a hardware echo canceler is in use, there won't be any messages generated, but it is still happening. > Generally receiving faxes works fine, but sometimes they break and i assume i > might have something to do with echo can. Unfortunately that is not likely to be the cause of your problems. -- Kevin P. Fleming Digium, Inc. | Director of Software Technologies 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA skype: kpfleming | jabber: [email protected] Check us out at www.digium.com & www.asterisk.org _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
