Music on old in channel gsm

:frowning:

Hi, I can hear the music when I put the call on hold
between calls between extensions and analog network gsm but not in the channel?

how can I resolve this situation
the version of asterisk is 1.8.12.0.rc-1 now

how can I solve this issue?

– Accepting call from ‘xxxxxxx’ to ‘s’ on channel 1, span 1
– Executing [s@from-gsm:1] Answer(“EXTRA/1-1”, “”) in new stack
– Executing [s@from-gsm:2] Dial(“EXTRA/1-1”, “SIP/xxxx”) in new stack
== Using SIP RTP CoS mark 5
– Called SIP/xxxx
– SIP/20096-0000001d is ringing
– SIP/20096-0000001d answered EXTRA/1-1
[Apr 18 20:55:16] NOTICE[3268]: res_rtp_asterisk.c:2334 ast_rtp_read: Unknown RTP codec 126 received from ‘192.168.0.11:1160’
[Apr 18 20:55:27] NOTICE[3268]: res_rtp_asterisk.c:2334 ast_rtp_read: Unknown RTP codec 126 received from ‘192.168.0.11:1160’