[asterisk-users] SendDTMF() behaves strangely

[Stephen Bosch]

Hi, Moises:

Moises Silva wrote:
> Have you tried using SIP INFO dtmf and test with SIP clients only?

I have tried with SIP dtmfmode=inband and SIP clients only; things get
even stranger. I can't hear the DTMF on the receiving end at all, and
the calling party hears ringing even after the called party has picked
up the phone.

In other words, it's worse -- at least with the IAX channel I could hear
something.

Thanks,

-Stephen-

> this may be an issue with the IAX2 channel driver or something else,
> not SendDTMF issue. Try finding out that, SendDTMF is very simple,
> just queues a DTMF digit on the channel driver, I dont see what could
> fail.
> 
> Kind Regards
> 
> On 11/4/06, Stephen Bosch <posting at vodacomm.ca> wrote:
>> Stephen Bosch wrote:
>> > Moises Silva wrote:
>> >> try enabling DTMF debugging on logger.conf for the console, and tell
>> >> us here waht do you see
>> >
>> > This is what comes out on the console, with IP addresses removed:
>> >
>> >
>> >>     -- Call accepted by xx.xx.xx.xx (format ulaw)
>> >>     -- Format for call is ulaw
>> >>     -- IAX2/[provider_channel_id] is making progress passing it to
>> SIP/polycom-081827b0
>> >>     -- IAX2/[provider_channel_id] answered SIP/polycom-081827b0
>> >>     -- Executing Wait("IAX2/[provider_channel_id]", "0.5") in new
>> stack
>> >>     -- Executing SendDTMF("IAX2/[provider_channel_id]", "4") in new
>> stack
>> >> Nov  4 11:21:34 DTMF[17046]: channel.c:2345 ast_write:
>> IAX2/[provider_channel_id] : 4
>> >>     -- Executing SendDTMF("IAX2/[provider_channel_id]", "6") in new
>> stack
>> >> Nov  4 11:21:34 DTMF[17046]: channel.c:2345 ast_write:
>> IAX2/[provider_channel_id] : 6
>> >>     -- Executing SendDTMF("IAX2/[provider_channel_id]", "1") in new
>> stack
>> >> Nov  4 11:21:34 DTMF[17046]: channel.c:2345 ast_write:
>> IAX2/[provider_channel_id] : 1
>> >>     -- Executing SendDTMF("IAX2/[provider_channel_id]", "3") in new
>> stack
>> >> Nov  4 11:21:35 DTMF[17046]: channel.c:2345 ast_write:
>> IAX2/[provider_channel_id] : 3
>> >>     -- Executing Set("IAX2/[provider_channel_id]",
>> "MACRO_RESULT=CONTINUE") in new stack
>> >>     -- Hungup 'IAX2/[provider_channel_id]'
>> >>     -- Executing Hangup("SIP/polycom-081827b0", "") in new stack
>> >>   == Spawn extension (internal, 123, 4) exited non-zero on
>> 'SIP/polycom-081827b0'
>>
>> If I change the macro section to read like so:
>>
>> > [macro-page]
>> > exten => s,1,Wait(1)
>> > exten => s,n,SendDTMF(2)
>> > exten => s,n,Wait(10)
>> > exten => s,n,SendDTMF(6)
>> > exten => s,n,Wait(10)
>> > exten => s,n,Set(MACRO_RESULT=CONTINUE)
>>
>> the called party hears the '2' for about 1.5 seconds, followed by a 10
>> second pause, followed by the '6' for three seconds.
>>
>> This is highly unexpected and unspecified behaviour. What's wrong here?
>>
>> -Stephen-
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> 
>