[asterisk-users] Why SendDTMF is not working?

[Eric Wieling]

Now you have a totally different issue.  8-)

While the call is up do a "sip show channels" in the CLI.  This will show you the ACTUAL codec for the call.  Likely the call was still using GSM.  Did you remember to put a disallow=all before the allow= lines?

I recommend dtmfmode=rfc2833 with whatever codec you want to use.   Inband DTMF will sound broken and distorted if it is sent over most codecs.


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Shahid H
Sent: Sunday, May 06, 2012 9:16 AM
To: Markus
Cc: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Why SendDTMF is not working?

Thanks for the suggestion Markus. Here what I did:

In the logger.config I have added 'dtmf': 

console => notice,warning,error,dtmf

and then in sip.conf:

allow=ulaw
allow=alaw
; allow=gsm
dtmfmode=inband

I've added a test to call my mobile:

exten => 123,1,Dial(SIP/+4477XXXXXXX at voipms,,D(wwwwwwww1ww2ww3ww4))
exten => 123,n,Hangup()

then restarted asterisk and logged into console (asterisk -r)

I've call my mobile using softphone, I did not see 1,2,3,4 digits being sent on the console but I can hear broken/unclear DTMF on the mobile... 

however when I press digits on the softphone I can hear DTMF clear how it should be on my mobile and on the console it is showing DTMF:

astrisk*CLI> [May  6 14:13:06] DTMF[28559]: channel.c:3082 __ast_read: DTMF begin '4' received on SIP/test-0000001c [May  6 14:13:06] DTMF[28559]: channel.c:3092 __ast_read: DTMF begin passthrough '4' on SIP/test-0000001c [May  6 14:13:06] DTMF[28559]: channel.c:2997 __ast_read: DTMF end '4' received on SIP/test-0000001c, duration 120 ms [May  6 14:13:06] DTMF[28559]: channel.c:3037 __ast_read: DTMF end accepted with begin '4' on SIP/test-0000001c [May  6 14:13:06] DTMF[28559]: channel.c:3066 __ast_read: DTMF end passthrough '4' on SIP/test-0000001c [May  6 14:13:07] DTMF[28559]: channel.c:3082 __ast_read: DTMF begin '5' received on SIP/test-0000001c [May  6 14:13:07] DTMF[28559]: channel.c:3092 __ast_read: DTMF begin passthrough '5' on SIP/test-0000001c [May  6 14:13:07] DTMF[28559]: channel.c:2997 __ast_read: DTMF end '5' received on SIP/test-0000001c, duration 120 ms [May  6 14:13:07] DTMF[28559]: channel.c:3037 __ast_read: DTMF end accepted with begin '5' on SIP/test-0000001c [May  6 14:13:07] DTMF[28559]: channel.c:3066 __ast_read: DTMF end passthrough '5' on SIP/test-0000001c [May  6 14:13:08] DTMF[28559]: channel.c:3082 __ast_read: DTMF begin '6' received on SIP/test-0000001c [May  6 14:13:08] DTMF[28559]: channel.c:3092 __ast_read: DTMF begin passthrough '6' on SIP/test-0000001c [May  6 14:13:08] DTMF[28559]: channel.c:2997 __ast_read: DTMF end '6' received on SIP/test-0000001c, duration 120 ms [May  6 14:13:08] DTMF[28559]: channel.c:3037 __ast_read: DTMF end accepted with begin '6' on SIP/test-0000001c [May  6 14:13:08] DTMF[28559]: channel.c:3066 __ast_read: DTMF end passthrough '6' on SIP/test-0000001c

Thanks!

On Sun, May 6, 2012 at 1:03 PM, Markus <universe at truemetal.org> wrote:


	Am 06.05.2012 13:46, schrieb Shahid H:


		Hello,
		
		I am having a problem with SendDTMF - it is not sending the numbers
		properly during the phone call.. I want the numbers key to to be
		pressed/sent automatically after 3 seconds during a phone call.
		


	Log the actual DTMF to your console, set in logger.conf:
	
	console => something,something,dtmf
	                              ^^^^
	
	Then try again and check if you see the actual DTMF. If you do and it still doesn't work, try
	
	dtmfmode=inband
	
	for your voipms peer.
	
	rfc2833 has been working always unreliable for me.
	
	Also, I'm doing DTMF like this:
	
	exten => 5000,n,Dial(SIP/123456 at provider,,D(wwwwww1ww2ww3ww4))
	
	Just use more w's to generate your 3 seconds pause. No need for SendDTMF.
	
	For more debugging just call yourself on your UK mobile from a softphone and press digits and watch the console and listen on your mobile if you hear the DTMF.