To FreeSWITCH Users,

I am attempting to make a recording of an outbound call using the originate API call which starts a Lua script which then simply records to disk exactly what it hears.

I just noticed an interesting issue (or feature) where the recording skips any silence.  What I am aiming for is for no silence to be skipped inside the recording, if someone can provide some settings for me to try I would be more than happy to experiment further.

The settings for the Lua session:recordFile are length of recording: 60 seconds; silence threshold: 300; silence seconds: 60 seconds  {essentially termination on silence is disabled since the silence seconds = recording seconds}

I also tried with silence threshold = 0 and silence is still skipped inside the recording.

I also tried the setting inside the appropriate profile: <param name="suppress-cng" value="true"/> and this made no difference, silence is still skipped inside the recording.

My setup is one single FreeSWITCH 1.6.20 (production version) box with a simple internal gateway setup to land on the same FreeSWITCH IVR (just for testing). 

API command: originate {origination_uuid=121e20a6-1245-439a-8527-53efab009334-out-1,origination_caller_id_number=FLOODOUT,call_timeout=15,ignore_early_media=true,return_ring_ready=true,suppress_cng=true}sofia/gateway/visytel-pc-ivr/01111111111 FLOODOUT

The SDP inside my log is similar to this for the outbound and inbound (Note: The outbound call is performing the recording):

121e20a6-1245-439a-8527-53efab009334-out-1 Local SDP:

121e20a6-1245-439a-8527-53efab009334-out-1 v=0

121e20a6-1245-439a-8527-53efab009334-out-1 o=FreeSWITCH 1529274701 1529274702 IN IP4 192.168.15.15

121e20a6-1245-439a-8527-53efab009334-out-1 s=FreeSWITCH

121e20a6-1245-439a-8527-53efab009334-out-1 c=IN IP4 192.168.15.15

121e20a6-1245-439a-8527-53efab009334-out-1 t=0 0

121e20a6-1245-439a-8527-53efab009334-out-1 m=audio 25994 RTP/AVP 9 8 0 101

121e20a6-1245-439a-8527-53efab009334-out-1 a=rtpmap:9 G722/8000

121e20a6-1245-439a-8527-53efab009334-out-1 a=rtpmap:8 PCMA/8000

121e20a6-1245-439a-8527-53efab009334-out-1 a=rtpmap:0 PCMU/8000

121e20a6-1245-439a-8527-53efab009334-out-1 a=rtpmap:101 telephone-event/8000

121e20a6-1245-439a-8527-53efab009334-out-1 a=fmtp:101 0-16

121e20a6-1245-439a-8527-53efab009334-out-1 a=silenceSupp:off - - - -

121e20a6-1245-439a-8527-53efab009334-out-1 a=ptime:20

121e20a6-1245-439a-8527-53efab009334-out-1 a=sendrecv

6da97c7c-1052-4f78-8dde-83901147a0c1 2018-06-18 15:44:55.596296 [DEBUG] sofia.c:7094 Remote SDP:

6da97c7c-1052-4f78-8dde-83901147a0c1 v=0

6da97c7c-1052-4f78-8dde-83901147a0c1 o=FreeSWITCH 1529274701 1529274702 IN IP4 192.168.15.15

6da97c7c-1052-4f78-8dde-83901147a0c1 s=FreeSWITCH

6da97c7c-1052-4f78-8dde-83901147a0c1 c=IN IP4 192.168.15.15

6da97c7c-1052-4f78-8dde-83901147a0c1 t=0 0

6da97c7c-1052-4f78-8dde-83901147a0c1 m=audio 25994 RTP/AVP 9 8 0 101

6da97c7c-1052-4f78-8dde-83901147a0c1 a=rtpmap:9 G722/8000

6da97c7c-1052-4f78-8dde-83901147a0c1 a=rtpmap:8 PCMA/8000

6da97c7c-1052-4f78-8dde-83901147a0c1 a=rtpmap:0 PCMU/8000

6da97c7c-1052-4f78-8dde-83901147a0c1 a=rtpmap:101 telephone-event/8000

6da97c7c-1052-4f78-8dde-83901147a0c1 a=fmtp:101 0-16

6da97c7c-1052-4f78-8dde-83901147a0c1 a=silenceSupp:off - - - -

6da97c7c-1052-4f78-8dde-83901147a0c1 a=ptime:20

6da97c7c-1052-4f78-8dde-83901147a0c1

Kind Regards,

Andrew Keil