Are you on SVN trunk 12694? /b
On Mar 20, 2009, at 4:28 PM, Gabriel Kuri wrote: > hey folks, I'm trying to configure PCMU fallback for T.38. > > The originating endpoint (Linksys SPA-2102) sends an INVITE to FS with > G729 and PCMU in the sdp. the INVITE to the provider includes G729 and > PCMU as part of the sdp as well (absolute_codec_string=G729,PCMU) ... > > m=audio 16458 RTP/AVP 18 0 100 101 > a=rtpmap:18 G729/8000 > a=rtpmap:0 PCMU/8000 > a=rtpmap:100 NSE/8000 > a=fmtp:100 192-193 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-15 > a=ptime:20 > > once the FAX tone is detected on the PSTN side, FS receives a T.38 > re-INVITE from the provider and FS sends back a 488/Not Acceptable > (proxy_media=false). at that point the provider than attempts fallback > to PCMU with another reINVITE ... > > m=audio 16816 RTP/AVP 0 101 > a=rtpmap:0 PCMU/8000 > a=rtpmap:101 telephone-event/8000 > a=fmtp:101 0-15 > a=ptime:20 > > immediately after the PCMU reINVITE, FS closes the channel and the > text > below is in the FS logs. given the SPA-2102 included PCMU in the > original INVITE, even though it was the second preferred codec, > shouldn't FS fallback to using PCMU if it was re-INVITEd with PCMU by > the provider? It seems like it's not passing the PCMU Re-INVITE back > to > the endpoint (SPA-2102), since it originally negotiated G729 with the > SPA2102 as that was the 1st codec in the sdp, but trying to transcode > between the two (G729 and PCMU)? > > > 2009-03-20 01:19:58 [DEBUG] sofia_glue.c:2407 > sofia_glue_negotiate_sdp() > Audio Codec Compare [PCMU:0:8000]/[G729:18:8000] > 2009-03-20 01:19:58 [DEBUG] sofia_glue.c:2371 > sofia_glue_negotiate_sdp() > Set 2833 dtmf payload to 101 > 2009-03-20 01:19:58 [DEBUG] sofia_glue.c:2407 > sofia_glue_negotiate_sdp() > Audio Codec Compare [telephone-event:101:8000]/[G729:18:8000] > 2009-03-20 01:19:58 [DEBUG] sofia_glue.c:2407 > sofia_glue_negotiate_sdp() > Audio Codec Compare [PCMU:0:8000]/[PCMU:0:8000] > 2009-03-20 01:19:58 [DEBUG] sofia_glue.c:1550 > sofia_glue_tech_set_codec() Changing Codec from G729 to PCMU > 2009-03-20 01:19:58 [DEBUG] sofia_glue.c:1601 > sofia_glue_tech_set_codec() Set Codec > sofia/cedarwireless.net/1xxxxxxx...@1.1.1.1 PCMU/8000 20 ms 160 > samples > 2009-03-20 01:19:58 [DEBUG] sofia_glue.c:1811 > sofia_glue_activate_rtp() > Audio params are unchanged for sofia/cedarwireless.net/1xxxxxxx...@1.1.1.1 > . > 2009-03-20 01:19:58 [DEBUG] sofia.c:2896 sofia_handle_sip_i_state() > Processing Reinvite > 2009-03-20 01:19:58 [DEBUG] sofia.c:2542 sofia_handle_sip_i_state() > Channel sofia/cedarwireless.net/1xxxxxxx...@1.1.1.1 entering state > [completed] > 2009-03-20 01:19:58 [DEBUG] switch_core_io.c:655 > switch_core_session_write_frame() > sofia/cedarwireless.net/1xxxxxxx...@1.1.1.1 receive message > [SWITCH_MESSAGE_INDICATE_TRANSCODING_NECESSARY] > 2009-03-20 01:19:58 [ERR] mod_g729.c:145 switch_g729_decode() This > codec > is only usable in passthrough mode! > 2009-03-20 01:19:58 [ERR] switch_core_io.c:723 > switch_core_session_write_frame() Codec G.729 decoder error! > > > Thanks, > > Gabe > > _______________________________________________ > Freeswitch-users mailing list > Freeswitch-users@lists.freeswitch.org > http://lists.freeswitch.org/mailman/listinfo/freeswitch-users > UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users > http://www.freeswitch.org _______________________________________________ Freeswitch-users mailing list Freeswitch-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
