[Freeswitch-users] Recording problem

Vbvbrj vbvbrj at gmail.com
Fri Aug 17 20:32:01 MSD 2012 

Hello.

I have a problem with recorded files (wav, mp3, gsm) there are three 
agents in callcenter which receives calls from same external provider. 
The problem is that recorded sound from one agent is good quality, while 
other two recorded sounds have dropped samples and its like the sound is 
at 2x speed.

In vars.xml I have:
	<X-PRE-PROCESS cmd="set" 
data="global_codec_prefs=speex at 32000h@20i,G722,PCMU,PCMA,GSM"/>
	<X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=PCMU,PCMA,GSM"/>

I am using mod_callcenter. There are 3 agents:
user 892 at D-Link DPH-150S
user 743 at D-Link DPH-150S
user 897 at Linksys PAP2T

There is incoming calls from same external number (multiple channels), 
the log is:
.....
a5079181-e072-4eee-9291-95a4ab40eabd 2012-08-17 15:18:15.658288 [DEBUG] 
sofia.c:6060 Remote SDP:
a5079181-e072-4eee-9291-95a4ab40eabd v=0
a5079181-e072-4eee-9291-95a4ab40eabd o=- 1345205895 1345205895 IN IP4 
192.168.0.6
a5079181-e072-4eee-9291-95a4ab40eabd s=-
a5079181-e072-4eee-9291-95a4ab40eabd c=IN IP4 192.168.0.6
a5079181-e072-4eee-9291-95a4ab40eabd t=0 0
a5079181-e072-4eee-9291-95a4ab40eabd m=audio 13630 RTP/AVP 8 0
a5079181-e072-4eee-9291-95a4ab40eabd a=rtpmap:8 PCMA/8000
a5079181-e072-4eee-9291-95a4ab40eabd a=rtpmap:0 PCMU/8000
a5079181-e072-4eee-9291-95a4ab40eabd a=silenceSupp:off - - - -
a5079181-e072-4eee-9291-95a4ab40eabd
.....
a5079181-e072-4eee-9291-95a4ab40eabd 2012-08-17 15:18:15.668301 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMA:8:8000:20:64000]/[SPEEX:99:32000:20:44000]
a5079181-e072-4eee-9291-95a4ab40eabd 2012-08-17 15:18:15.668301 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMA:8:8000:20:64000]/[G722:9:8000:20:64000]
a5079181-e072-4eee-9291-95a4ab40eabd 2012-08-17 15:18:15.668301 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMA:8:8000:20:64000]/[PCMU:0:8000:20:64000]
a5079181-e072-4eee-9291-95a4ab40eabd 2012-08-17 15:18:15.668301 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMA:8:8000:20:64000]/[PCMA:8:8000:20:64000]
a5079181-e072-4eee-9291-95a4ab40eabd 2012-08-17 15:18:15.668301 [DEBUG] 
sofia_glue.c:3027 Set Codec sofia/orange/extern_number at 192.168.0.5:5061 
PCMA/8000 20 ms 160 samples 64000 bits
a5079181-e072-4eee-9291-95a4ab40eabd 2012-08-17 15:18:15.668301 [DEBUG] 
switch_core_codec.c:111 sofia/orange/extern_number at 192.168.0.5:5061 
Original read codec set to PCMA:8

After playing greeting, caller is routed to callcenter. When an agent 
answers the log has:

For user 892:
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia.c:6060 Remote SDP:
55969678-ab9f-4007-8023-304f4b602c97 v=0
55969678-ab9f-4007-8023-304f4b602c97 o=710 38421252 24417309 IN IP4 
132.101.208.92
55969678-ab9f-4007-8023-304f4b602c97 s=A conversation
55969678-ab9f-4007-8023-304f4b602c97 c=IN IP4 132.101.208.92
55969678-ab9f-4007-8023-304f4b602c97 t=0 0
55969678-ab9f-4007-8023-304f4b602c97 m=audio 10154 RTP/AVP 9 0 8 101
55969678-ab9f-4007-8023-304f4b602c97 a=rtpmap:9 G722/16000
55969678-ab9f-4007-8023-304f4b602c97 a=rtpmap:0 PCMU/8000
55969678-ab9f-4007-8023-304f4b602c97 a=rtpmap:8 PCMA/8000
55969678-ab9f-4007-8023-304f4b602c97 a=rtpmap:101 telephone-event/8000
55969678-ab9f-4007-8023-304f4b602c97 a=fmtp:101 0-15
......
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[G722:9:16000:20:64000]/[SPEEX:99:32000:20:44000]
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[G722:9:16000:20:64000]/[G722:9:8000:20:64000]
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[G722:9:16000:20:64000]/[PCMU:0:8000:20:64000]
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[G722:9:16000:20:64000]/[PCMA:8:8000:20:64000]
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[G722:9:16000:20:64000]/[GSM:3:8000:20:13200]
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia_glue.c:5097 Substituting codec G722 at 20i@8000h
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
sofia_glue.c:3027 Set Codec sofia/internal/sip:892 at 132.101.208.92:5060 
G722/8000 20 ms 160 samples 64000 bits
55969678-ab9f-4007-8023-304f4b602c97 2012-08-17 15:18:29.948337 [DEBUG] 
switch_core_codec.c:111 sofia/internal/sip:892 at 132.101.208.92:5060 
Original read codec set to G722:9


For user 743:
acb5bf6a-4e79-46a4-a32b-420b5301d6ec 2012-08-17 15:20:29.918291 [DEBUG] 
sofia.c:6060 Remote SDP:
acb5bf6a-4e79-46a4-a32b-420b5301d6ec v=0
acb5bf6a-4e79-46a4-a32b-420b5301d6ec o=1743 26961311 21406313 IN IP4 
132.101.207.43
acb5bf6a-4e79-46a4-a32b-420b5301d6ec s=A conversation
acb5bf6a-4e79-46a4-a32b-420b5301d6ec c=IN IP4 132.101.207.43
acb5bf6a-4e79-46a4-a32b-420b5301d6ec t=0 0
acb5bf6a-4e79-46a4-a32b-420b5301d6ec m=audio 10092 RTP/AVP 0 8 101
acb5bf6a-4e79-46a4-a32b-420b5301d6ec a=rtpmap:0 PCMU/8000
acb5bf6a-4e79-46a4-a32b-420b5301d6ec a=rtpmap:8 PCMA/8000
acb5bf6a-4e79-46a4-a32b-420b5301d6ec a=rtpmap:101 telephone-event/8000
acb5bf6a-4e79-46a4-a32b-420b5301d6ec a=fmtp:101 0-15
......
acb5bf6a-4e79-46a4-a32b-420b5301d6ec 2012-08-17 15:20:29.918291 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:20:64000]/[SPEEX:99:32000:20:44000]
acb5bf6a-4e79-46a4-a32b-420b5301d6ec 2012-08-17 15:20:29.918291 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:20:64000]/[G722:9:8000:20:64000]
acb5bf6a-4e79-46a4-a32b-420b5301d6ec 2012-08-17 15:20:29.918291 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:20:64000]/[PCMU:0:8000:20:64000]
acb5bf6a-4e79-46a4-a32b-420b5301d6ec 2012-08-17 15:20:29.918291 [DEBUG] 
sofia_glue.c:3027 Set Codec sofia/internal/sip:743 at 132.101.207.43:5060 
PCMU/8000 20 ms 160 samples 64000 bits
acb5bf6a-4e79-46a4-a32b-420b5301d6ec 2012-08-17 15:20:29.918291 [DEBUG] 
switch_core_codec.c:111 sofia/internal/sip:743 at 132.101.207.43:5060 
Original read codec set to PCMU:0


For user 897:
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia.c:6060 Remote SDP:
35c3b541-c78e-4d4d-96fe-f15509dc7f91 v=0
35c3b541-c78e-4d4d-96fe-f15509dc7f91 o=- 1715257 1715257 IN IP4 
132.101.202.2
35c3b541-c78e-4d4d-96fe-f15509dc7f91 s=-
35c3b541-c78e-4d4d-96fe-f15509dc7f91 c=IN IP4 132.101.202.2
35c3b541-c78e-4d4d-96fe-f15509dc7f91 t=0 0
35c3b541-c78e-4d4d-96fe-f15509dc7f91 m=audio 16444 RTP/AVP 0 100 101
35c3b541-c78e-4d4d-96fe-f15509dc7f91 a=rtpmap:0 PCMU/8000
35c3b541-c78e-4d4d-96fe-f15509dc7f91 a=rtpmap:100 NSE/8000
35c3b541-c78e-4d4d-96fe-f15509dc7f91 a=fmtp:100 192-193
35c3b541-c78e-4d4d-96fe-f15509dc7f91 a=rtpmap:101 telephone-event/8000
35c3b541-c78e-4d4d-96fe-f15509dc7f91 a=fmtp:101 0-15
35c3b541-c78e-4d4d-96fe-f15509dc7f91 a=ptime:30
......
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:30:64000]/[SPEEX:99:32000:20:44000]
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:30:64000]/[G722:9:8000:20:64000]
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:30:64000]/[PCMU:0:8000:20:64000]
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:30:64000]/[PCMA:8:8000:20:64000]
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia_glue.c:5044 Audio Codec Compare 
[PCMU:0:8000:30:64000]/[GSM:3:8000:20:13200]
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia_glue.c:5097 Substituting codec PCMU at 30i@8000h
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
sofia_glue.c:3027 Set Codec sofia/internal/sip:897 at 132.101.202.2:5060 
PCMU/8000 30 ms 240 samples 64000 bits
35c3b541-c78e-4d4d-96fe-f15509dc7f91 2012-08-17 15:27:04.198310 [DEBUG] 
switch_core_codec.c:111 sofia/internal/sip:897 at 132.101.202.2:5060 
Original read codec set to PCMU:0



See the difference for users 892 and 743. For user 892 a substitution 
for codecs is done, while for user 743 is not. Both users are registered 
from the same model of IP phone with same configs except sip 
configuration for login.

What can be wrong?
Thank you.

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