Currently my FS is set up that way that it does not sent 183 Session Progress but 180 Ringing at once. It makes the calling side sometimes confused whether the call is being processed or not.

To change this, I use pre_answer() before bridge, but then run onto this issue - FS jump up with a AUDIO RTP REPORTS ERROR: [Missing local host] as you can see in the log below.

Can anyone help me on this.

Thanks.

EXECUTE sofia/internal/1000@Registar_IP.X.X.X pre_answer()

[INFO] mod_dptools.c:1327 Sending early media

[DEBUG] switch_core_media.c:2507 Set Codec sofia/internal/1000@Registar_IP.X.X.X PCMU/0 0 ms 160 samples 64000 bits 1 channels

[DEBUG] switch_core_codec.c:111 sofia/internal/1000@Registar_IP.X.X.X Original read codec set to PCMU:0

[DEBUG] switch_core_media.c:5244 PROXY AUDIO RTP [sofia/internal/1000@Registar_IP.X.X.X] Softphone_local_IP.X.X.X:5930->Softphone_local_IP.X.X.X:5930 codec: 0 ms: 20

[ERR] switch_core_media.c:5844 AUDIO RTP REPORTS ERROR: [Missing local host]