<div class="gmail_quote">On Thu, Feb 26, 2009 at 6:08 PM, Simon Dixey <span dir="ltr"><<a href="mailto:simon_qro@hotmail.co.uk">simon_qro@hotmail.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<p>I wonder if anyone is able to offer any [polite ;-)] words of wisdom??<br>
</p></div></blockquote><div>I can be polite, I'm not sure about the wisdom .. :-)<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><p>DTMF threshold in misdn-init look high doesn't it... I'm not entirely sure what it
"should" be set to, to be honest.. <span> </span>(min-max values for tuning); have read max
value is 100, but others suggest it'll go higher - but what exactly is it
tuning the sensitivity value of specifically? (i.e. what is the threshold
value). DTMF detection works well for *genuine* DTMF digits dialled over
the ISDN trunk, but mISDN/Asterisk still recognises them incorrectly at times
during calls (to/from cell phones).<br>
</p></div></blockquote><div>I'm using almost the same setup but I'm in Belgium. Also a b410p. The dtmf seems to get triggered more by some calls then other. It also depends on the voice. (higher tones trigger dtmf more easily) My dtmfthreshold is set to 100. Guess it's the (in)sane default ? :-)<br>
<br>Oh, are you having "random" crashes on your mISDN setup too ?<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><p>
I've also seen other posts refer to settings in Dahdi.conf (such as relaxdtmf)
- surely Dahdi doesn't have anything to do with this if I'm using chan_misdn??<br>
</p></div></blockquote><div>Correct. Only has anything to do with it if you're using chan_dahdi. <br>I can't reproduce the same behaviour on dahdi.<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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Is anyone able to confirm exactly whether mISDN's hardware DSP and driver is
responsible for detecting DTMF, or whether it's Asterisk analysing the inbound
audio? Scanning the README.misdn (sourced separately) the chan_misdn
driver readme comments a feature as "DTMF Detection in HW+mISDNdsp (much
better than asterisks internal!)" - so surely DTMF is recognised and
passed on by mISDN to Asterisk. The fact that the log messages prefixed
by P[ 1] are mISDN - I think I've answered my own question there...<br>
</p></div></blockquote><div>Yes, it's mISDN that detects the dtmf.<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><p>
Prior to going down the mISDN route, I looked at Dahdi as the Dahdi configs
mention native Dahdi B410P support. But, the conclusion I came to
(although what I read didn't make it clear me) is that the readme was referring
to Dahdi B410P support in Ast 1.6, not 1.4. That sound right? Dahdi
readme:<br>
</p></div></blockquote><div>Right again. i've been experimenting with Dahdi's b410p for a while now, it's only available in asterisk 1.6, with the latest libpri and dahdi releases.<br>It's much cleaner, imho, but I'm having issues with receiving faxes when using dahdi, so I'm stuck with mISDN for the moment :-)<br>
</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><p>
Enough reading.. if you're still awake! Any help would be very much appreciated.<br></p></div></blockquote></div>Nice to see someone else is using the same setup. I was beginning to think that people with BRI stopped using asterisk in Europe :-)<br>
<br>Keep in touch or post to the mailing list if you have any further news/experiences..<br><br><br>cheers,<br>stoffell<br><br><br>