2015-08-11 14:32:28.827339 [ERR] mod_g729.c:102 This codec is only usable in passthrough mode!
2015-08-11 14:32:28.827339 [ERR] switch_core_io.c:1423 Codec G.729 encoder error!

You're trying to use mod_g729 to do transcoding (converting between different codecs, which includes playing a file). However that module is the version that doesn't require a license and thus can only act in passthrough mode where it transfers data between call legs that's already converted to G729. It cannot encode or decode, hence the error when you try to play your WAV file.

Your options are:
1) Use mod_com_g729, which is the licensed version and supports transcoding (see freeswitch.org)
2) Try using a codec other than G729 (perhaps the codec choice of the client is not in your control though)
3) See whether mod_native_file can playback the file already converted to G729 (you'll still need a license for the conversion though, and still hit transcoding errors at other times eg during a bridge)

On 11 August 2015 at 07:57, <david.fu@oocl.com> wrote:
Hi All,
 
We ‘re encountering the error “Codec G.729 encoder error!”.  Would you please give us some hints how to resolve the issue ? I’ve attached the log message in the followings. Thanks
 
SIP Log:
2015-08-11 14:32:28.807295 [DEBUG] sofia.c:6715 Channel sofia/internal/10810609@146.222.181.146 entering state [completed][200]
2015-08-11 14:32:28.807295 [NOTICE] mod_dptools.c:1309 Channel [sofia/internal/10810609@146.222.181.146] has been answered
2015-08-11 14:32:28.807295 [DEBUG] switch_channel.c:3759 (sofia/internal/10810609@146.222.181.146) Callstate Change EARLY -> ACTIVE
EXECUTE sofia/internal/10810609@146.222.181.146 playback(ivr/ivr-welcome_to_freeswitch.wav)
2015-08-11 14:32:28.807295 [DEBUG] switch_ivr_play_say.c:1359 Codec Activated L16@8000hz 1 channels 20ms
recv 454 bytes from tcp/[146.222.181.146]:53483 at 14:32:28.817573:
   ------------------------------------------------------------------------
   ACK sip:10818899@146.222.181.242:5060;transport=tcp SIP/2.0
   Via: SIP/2.0/TCP 146.222.181.146:5060;branch=z9hG4bK146f1e181af4
   From: <sip:10810609@146.222.181.146>;tag=11828~406686f1-eb54-4f74-9646-b75095131124-22185543
   To: <sip:10818899@146.222.181.242>;tag=F3Qc7t63vH7pK
   Date: Tue, 11 Aug 2015 06:46:42 GMT
   Max-Forwards: 70
   CSeq: 101 ACK
   Allow-Events: presence, kpml
   Content-Length: 0
 
   ------------------------------------------------------------------------
2015-08-11 14:32:28.827339 [DEBUG] sofia.c:6715 Channel sofia/internal/10810609@146.222.181.146 entering state [ready][200]
2015-08-11 14:32:28.827339 [ERR] mod_g729.c:102 This codec is only usable in passthrough mode!
2015-08-11 14:32:28.827339 [ERR] switch_core_io.c:1423 Codec G.729 encoder error!
2015-08-11 14:32:28.827339 [DEBUG] switch_ivr_play_say.c:1805 done playing file /usr/local/freeswitch/sounds/en/us/callie/ivr/ivr-welcome_to_freeswitch.wav
EXECUTE sofia/internal/10810609@146.222.181.146 sleep(500)
2015-08-11 14:32:28.927320 [DEBUG] switch_rtp.c:6462 Correct audio ip/port confirmed.
2015-08-11 14:32:29.347316 [NOTICE] switch_core_state_machine.c:315 sofia/internal/10810609@146.222.181.146 has executed the last dialplan instruction, hanging up.
2015-08-11 14:32:29.347316 [NOTICE] switch_core_state_machine.c:317 Hangup sofia/internal/10810609@146.222.181.146 [CS_EXECUTE] [NORMAL_CLEARING]
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:539 (sofia/internal/10810609@146.222.181.146) State EXECUTE going to sleep
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:473 (sofia/internal/10810609@146.222.181.146) Running State Change CS_HANGUP
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:739 (sofia/internal/10810609@146.222.181.146) Callstate Change ACTIVE -> HANGUP
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:741 (sofia/internal/10810609@146.222.181.146) State HANGUP
2015-08-11 14:32:29.347316 [DEBUG] mod_sofia.c:431 Channel sofia/internal/10810609@146.222.181.146 hanging up, cause: NORMAL_CLEARING
2015-08-11 14:32:29.347316 [DEBUG] mod_sofia.c:484 Sending BYE to sofia/internal/10810609@146.222.181.146
send 657 bytes to tcp/[146.222.181.146]:5060 at 14:32:29.348499:
   ------------------------------------------------------------------------
   BYE sip:10810609@146.222.181.146:5060;transport=tcp SIP/2.0
   Via: SIP/2.0/TCP 146.222.181.242;branch=z9hG4bK62B2N5Z2yK39D
   Max-Forwards: 70
   From: <sip:10818899@146.222.181.242>;tag=F3Qc7t63vH7pK
   To: <sip:10810609@146.222.181.146>;tag=11828~406686f1-eb54-4f74-9646-b75095131124-22185543
   CSeq: 79301310 BYE
   User-Agent: FreeSWITCH-mod_sofia/1.7.0+git~20150810T224801Z~28ae331c93~64bit
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
   Supported: timer, path, replaces
   Reason: Q.850;cause=16;text="NORMAL_CLEARING"
   Content-Length: 0
 
   ------------------------------------------------------------------------
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:60 sofia/internal/10810609@146.222.181.146 Standard HANGUP, cause: NORMAL_CLEARING
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:741 (sofia/internal/10810609@146.222.181.146) State HANGUP going to sleep
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:508 (sofia/internal/10810609@146.222.181.146) State Change CS_HANGUP -> CS_REPORTING
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:473 (sofia/internal/10810609@146.222.181.146) Running State Change CS_REPORTING
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:827 (sofia/internal/10810609@146.222.181.146) State REPORTING
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:104 sofia/internal/10810609@146.222.181.146 Standard REPORTING, cause: NORMAL_CLEARING
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:827 (sofia/internal/10810609@146.222.181.146) State REPORTING going to sleep
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:499 (sofia/internal/10810609@146.222.181.146) State Change CS_REPORTING -> CS_DESTROY
2015-08-11 14:32:29.347316 [DEBUG] switch_core_session.c:1639 Session 5 (sofia/internal/10810609@146.222.181.146) Locked, Waiting on external entities
2015-08-11 14:32:29.347316 [NOTICE] switch_core_session.c:1657 Session 5 (sofia/internal/10810609@146.222.181.146) Ended
2015-08-11 14:32:29.347316 [NOTICE] switch_core_session.c:1661 Close Channel sofia/internal/10810609@146.222.181.146 [CS_DESTROY]
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:630 (sofia/internal/10810609@146.222.181.146) Running State Change CS_DESTROY
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:640 (sofia/internal/10810609@146.222.181.146) State DESTROY
2015-08-11 14:32:29.347316 [DEBUG] mod_sofia.c:341 sofia/internal/10810609@146.222.181.146 SOFIA DESTROY
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:111 sofia/internal/10810609@146.222.181.146 Standard DESTROY
2015-08-11 14:32:29.347316 [DEBUG] switch_core_state_machine.c:640 (sofia/internal/10810609@146.222.181.146) State DESTROY going to sleep
recv 362 bytes from tcp/[146.222.181.146]:5060 at 14:32:29.358948:
   ------------------------------------------------------------------------
 
Best Regards,
David
 

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