Sudhir Kumar wrote:
I have configured my GS HT-486 for "send dtmf" in audio, and on the asterisk box, sip.conf has dtmfmode set to inband. Everything seems to be working fine, however, I see my console get flooded with the following warning: "dsp.c:1467 ast_dsp_process: Unable to process inband DTMF on 256 frames"
Should I be cautious about them or just ignore? Better still, what should I do so that these warnings are not generated.
First off, upgrade your Asterisk code. That error message is quite a bit more friendly now (not to mention all of the other improvements :)
Secondly, inband DTMF does not work on G.729 (or 256 in Asterisk's terms)
*CLI> show codecs Disclaimer: this command is for informational purposes only. It does not indicate anything about your configuration. 1 (1 << 0) G.723.1 2 (1 << 1) GSM 4 (1 << 2) G.711 u-law 8 (1 << 3) G.711 A-law 16 (1 << 4) G.726 32 (1 << 5) ADPCM 64 (1 << 6) 16 bit Signed Linear PCM 128 (1 << 7) LPC10 256 (1 << 8) G.729A audio 512 (1 << 9) SpeeX 1024 (1 << 10) iLBC 65536 (1 << 16) JPEG image 131072 (1 << 17) PNG image 262144 (1 << 18) H.261 Video 524288 (1 << 19) H.263 Video
Jeremy McNamara
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