On 10/20/2010 11:35 AM, VoIP Question wrote: > On Wed, Oct 20, 2010 at 4:25 PM, Kevin P. Fleming <[email protected] > <mailto:[email protected]>> wrote: > > > This was fixed in Asterisk 1.6.2.12 and later releases, so if you were > running the current version, you wouldn't have experienced this specific > problem. This was listed in the ChangeLog for 1.6.2.12, but > unfortunately the commit message the developer wrote did not explain why > the change was made or what problem it was addressing, so you wouldn't > have noticed it. > > In any case, upgrading to 1.6.2.12 or later will cure this problem. > > I upgraded to 1.6.2.13 and now we get this error (with a specific > destination, to which we occasionally need to send faxes): > > WARNING[857]: udptl.c:1087 ast_udptl_write: (SIP/XXXXXXXXXXX): UDPTL > asked to send 50 bytes of IFP when far end only prepared to accept 30 > bytes; data loss will occur.You may need to override the > T38FaxMaxDatagram value for this endpoint in the channel driver > configuration. > > > How can we fix it, without risking incompatibility with other > end-points? What's a "channel driver configuration" and where is it?
It appears that you need to spend some time learning the basics of Asterisk. In this case, the channel driver is chan_sip, since the channel involved is a SIP channel, and the 'channel driver configuration' is the sip.conf file. It is unfortunate that you have chosen to tackle a very complex task (T.38 interoperability is fraught with problems due to widely varying implementations) as your first experience with Asterisk... there's a lot you'll need to learn to be able to diagnose and troubleshoot problems. Asterisk alone is not 'point and click', and adding T.38 to the mix makes things more complicated. -- 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 -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
