If you receive 'g729a' or 'g729ab' in your SDP that device sending it is broken, you should file a bug with them and make them correct it.  You should only be seeing 'g729', The fmtp line dictates the a vs b element of g729 not the sringing in the rtp map line.

On Wed, Jun 10, 2015 at 9:27 AM, Dmitry Saratsky <simpot@gmail.com> wrote:
Yes, I'm talking about SDP.
1. If I receive in SDP call with g729ab, can I reply with g729a and then setup the call in g729?

Sent from my iPhone
_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://confluence.freeswitch.org
http://www.cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org



--

Brian West
brian@freeswitch.org


Twitter: @FreeSWITCH , @briankwest
http://www.freeswitchbook.com
http://www.freeswitchcookbook.com

ClueCon 2015 Call for Speakers | Register TODAY! | Reddit: /r/freeswitch

T:+19184209001 | F:+19184209002 | M:+1918424WEST (9378)
iNUM:+883 5100 1420 9001 | ISN:410*543 | Skype:briankwest