[Freeswitch-users] change the remote RTP port after sample rate doesnot match

[Erwin Davis]

Hi, I got a weird issue when I dialed an extension and listen to a recorded
voice mail greeting message.
After playing a couple of time of the greeting, the FS printed the warning
of "sample rate not matching", then
send the audio to a different remote RTP port. See the log below,


2009-12-02 12:42:27.109529 [DEBUG] switch_ivr_play_say.c:1097 Codec
Activated L16 at 16000hz 1 channels 20ms
2009-12-02 12:42:27.112038 [DEBUG] switch_core_io.c:649
sofia/internal/1003 at xxx.yyy.zzz.31 receive message [TRANSCODING_NECESSARY]
2009-12-02 12:42:28.86119 [DEBUG] switch_ivr_play_say.c:1391 done playing
file
2009-12-02 12:42:28.205975 [DEBUG] switch_ivr_play_say.c:118 No language
specified - Using [en]
2009-12-02 12:42:28.220967 [DEBUG] switch_ivr_play_say.c:273 Handle
play-file:[voicemail/vm-record_message.wav] (en:en)
2009-12-02 12:42:28.222971 [DEBUG] switch_ivr_play_say.c:1097 Codec
Activated L16 at 16000hz 1 channels 20ms
2009-12-02 12:42:28.222971 [DEBUG] switch_core_io.c:649
sofia/internal/1003 at xxx.yyy.zzz.31 receive message [TRANSCODING_NECESSARY]
2009-12-02 12:42:32.804858 [DEBUG] switch_ivr_play_say.c:1391 done playing
file
2009-12-02 12:42:32.944554 [DEBUG] switch_core_io.c:649
sofia/internal/1003 at xxx.yyy.zzz.31 receive message [TRANSCODING_NECESSARY]
2009-12-02 12:42:33.946969 [WARNING] switch_core_file.c:120 Sample rate
doesn't match
2009-12-02 12:42:33.950231 [DEBUG] switch_ivr_play_say.c:549 Raw Codec
Activated
2009-12-02 12:42:34.124584 [INFO] switch_rtp.c:1869 Auto Changing port from
xxx.yyy.zzz.39:10002 to xxx.yyy.zzz.39:1748
2009-12-02 12:42:34.944913 [DEBUG] switch_core_codec.c:122 Restore original
codec.
2009-12-02 12:42:34.947918 [DEBUG] mod_voicemail.c:1162 Message is less than
minimum record length: 3, discarding it.
2009-12-02 12:42:34.947918 [DEBUG] switch_ivr_play_say.c:118 No language
specified - Using [en]
2009-12-02 12:42:34.960002 [DEBUG] switch_ivr_play_say.c:273 Handle
play-file:[voicemail/vm-too-small.wav] (en:en)
2009-12-02 12:42:34.960850 [DEBUG] switch_ivr_play_say.c:1097 Codec
Activated L16 at 16000hz 1 channels 20ms
2009-12-02 12:42:34.960850 [DEBUG] switch_core_io.c:649
sofia/internal/1003 at xxx.yyy.zzz.31 receive message [


the original codec is wideband 16kHz Speex and the wireshark shows that the
FS used the same codec. I used FS 1.04 in fedora 8.
I have two questions here,
(1) why does FS report "Sample rate doesn't match"? is it a bug or
configuration issue?
(2) Why does FS change the RTP port ? how to fix it?

Thanks,

Regards,
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