Summary:ASTERISK-11246: unknown media description format
Reporter:tootai (tootai)Labels:
Date Opened:2008-01-16 07:26:00.000-0600Date Closed:2008-01-16 10:13:59.000-0600
Versions:Frequency of
Environment:Attachments:( 0) debug.log
Description:With some of our devices -Tiger IP202 or Sipura 1001- we found the subject message. What is strange is that with previous version we don't had this problem. Also, the devices are working perfectly except for conf or hold where there is no audio. Message are

unknown media description format G711U
unknown media description format G711A
unknown media description format G726-16|24|40

For the last one, I understand that Asterisk knows only G726-32. But for the two first one, it seems strange to me.
Comments:By: Joshua C. Colp (jcolp) 2008-01-16 09:01:52.000-0600

Fixed in 1.4 as of revision 98958 and trunk as of revision 98959.

By: Olle Johansson (oej) 2008-01-16 10:12:31.000-0600

According to the IANA registry, G711U should be "PCMU", G771A should be "PCMA". The string "G726-16|24|40" should be declared as three different codecs.

This is a very buggy device with low interoperability.

Check http://www.iana.org/assignments/rtp-parameters

By: Olle Johansson (oej) 2008-01-16 10:13:59.000-0600

For G726 we do support

- G726-32
- AAL2-G726-32

In Asterisk 1.4.