Hi folks, I use Pjsip since years now and it has been working perfectly (!) even for a simlar situation like the one I am striggling with now. Because we are using it with Tetra professional mobile radio, we have been developing an own sound card interface which is immune to the RF burst (similar to the TARA-TARA which is heard from GSM phones). Thus we are using 2 sound cards, one as the master, another with a reverse splitcomb. Under Windows XP, the sound card opened as second, does not have mic, always silence is detected. Under Win7 or with two separate card not connected to the same hub, everything is perfect. I am using version 1.3. The talkspurt burst in the beginning is fine, but once one card goes into vad, it stays there for ever... I have no idea any more, do you? Can I modify the splitcomb? Cheers, Andreas 08:26:39.555 pjsua_media.c Opening sound device PCM at 8000/1/20ms 08:26:39.617 pa_dev.c Opened device Microsoft Soundmapper - Input(MME)/Microsoft Soundmapper - Output(MME) for recording and playback, sample rate=8000, ch=1, bits=16, 160 samples per frame, input latency=100 ms, output latency=100 ms 08:26:39.617 pa_dev.c Starting Microsoft Soundmapper - Input stream.. 08:26:39.617 pa_dev.c PA message: Pa_StartStream: waveInStart returned = 0x0. 08:26:39.617 pa_dev.c Done, status=0 08:27:08.123 pa_dev.c Player thread started 08:27:08.123 pa_dev.c PA message: PA - PlatformId = 0x2 08:27:08.123 pa_dev.c PA message: PA - MajorVersion = 0x5 08:27:08.123 pa_dev.c PA message: PA - MinorVersion = 0x1 08:27:08.123 pa_dev.c PA message: PortAudio on DirectSound - Latency = 960 frames, 120 msec 08:27:08.186 pa_dev.c Recorder thread started 08:27:08.233 pa_dev.c PA message: InitInputBuffer() returns 0 08:27:08.233 pa_dev.c PA message: PA - PlatformId = 0x2 08:27:08.233 pa_dev.c PA message: PA - MajorVersion = 0x5 08:27:08.233 pa_dev.c PA message: PA - MinorVersion = 0x1 08:27:08.233 pa_dev.c PA message: PortAudio on DirectSound - Latency = 960 frames, 120 msec 08:27:08.280 pa_dev.c PA message: InitOutputBuffer() returns 0 08:27:08.280 pa_dev.c Opened device Handapparat(Windows DirectSound)/Handapparat(Windows DirectSound) for recording and playback, sample rate=8000, ch=1, bits=16, 160 samples per frame, input latency=0 ms, output latency=100 ms 08:27:08.280 pa_dev.c Starting Handapparat stream.. 08:27:08.280 pa_dev.c PA message: PaHost_ClearOutputBuffer: IDirectSoundBuffer_SetCurrentPosition returned = 0x0. 08:27:08.280 pa_dev.c PA message: PaHost_StartOutput: IDirectSoundBuffer_Play returned = 0x0. 08:27:08.280 pa_dev.c PA message: StartStream: DSW_StartInput returned = 0x0. 08:27:08.280 pa_dev.c Done, status=0 08:27:08.311 pa_dev.c Player thread started 08:27:08.358 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.389 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.405 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.420 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.436 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.467 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.483 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.499 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.530 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.545 scombdb-dn Underflow, buf_cnt=0, will generate 1 frame 08:27:08.545 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.561 scomb-rev Pausing media flow on downstream direction (level=-12) 08:27:08.577 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.608 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.608 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.639 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.639 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.670 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.702 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.702 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.733 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.749 scombdb-up Underflow, buf_cnt=0, will generate 1 frame 08:27:08.749 scomb-rev Pausing media flow on upstream direction (level=-12)
