[Freeswitch-users] sofia.c:896 nua_i_media_error: unknown event 22: 988 Incomplete offer/answer

[Armin Theis]

During a FreeSwitch call a sofia media error occured (sofia.c:896 
nua_i_media_error: unknown event 22: 988 Incomplete offer/answer)

I am using FreeSwitch Stable Release 1.0.6 and want to use it for 
production. Does anyone know why this error comes?

2010-04-27 10:02:38.421875 [DEBUG] sofia_glue.c:3585 Audio Codec Compare 
[PCMA:8:8000:20]/[PCMA:8:8000:20]
2010-04-27 10:02:38.421875 [DEBUG] sofia_glue.c:2292 Already using PCMA
2010-04-27 10:02:38.421875 [DEBUG] sofia_glue.c:3524 Set 2833 dtmf 
send/recv payload to 101
2010-04-27 10:02:38.421875 [DEBUG] sofia.c:4604 Processing updated SDP
2010-04-27 10:02:38.421875 [DEBUG] sofia_glue.c:2579 Audio params are 
unchanged for sofia/internal/1010 at 192.168.1.234.
2010-04-27 10:03:39.328125 [DEBUG] sofia.c:4153 Channel 
sofia/internal/1010 at 192.168.1.234 entering state [calling][0]
2010-04-27 10:03:39.484375 [DEBUG] sofia.c:896 nua_i_media_error: 
unknown event 22: 988 Incomplete offer/answer
2010-04-27 10:03:39.484375 [DEBUG] sofia.c:4153 Channel 
sofia/internal/1010 at 192.168.1.234 entering state [terminating][200]
2010-04-27 10:03:39.484375 [NOTICE] sofia.c:4789 Hangup 
sofia/internal/1010 at 192.168.1.234 [CS_EXECUTE] [NORMAL_CLEARING]
2010-04-27 10:03:39.484375 [DEBUG] switch_channel.c:2102 Send signal 
sofia/internal/1010 at 192.168.1.234 [KILL]
2010-04-27 10:03:39.484375 [DEBUG] switch_core_session.c:1021 Send 
signal sofia/internal/1010 at 192.168.1.234 [BREAK]
2010-04-27 10:03:39.500000 [ERR] switch_rtp.c:2395 switch_rtp.c if 
(switch_rtp_ready(rtp_session))
...