Ahh... We're doing the same thing!
I just tested inbound DTMF with one of our T-Mo phones as well as with
my spare Vonage line. On my T-Mo phone, the call is established
instantly, and I get the friendly Comedian greeting.
For testing purposes, all I have in the dial-plan for this number is:
s,1,Answer
s,2,Wait(1)
s,3,VoiceMailMain()
When using vonage on the other hand, I only get 'um to Comedian Mail'.
I don't have a land-line to test here right now.
Your question #4 is indeed a puzzle.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Marty
Mastera
Sent: Sunday, June 13, 2004 11:08 PM
To: [EMAIL PROTECTED]
Subject: [Asterisk-Users] SIP audio cut off even with Answer, Wait...
Hello everyone,
Having recently gotten Broadvoice inbound DTMF to work (thanks Greg)...I
am now running into a frustrating problem...when a call comes in to the
BV number via a cell phone (tested with 3 different cell phones; albeit
all on T-Mobile) the beginning of the IVR welcome audio is cut off. A
call placed via a landline phone over the PSTN to the BV number does not
exhibit the problem.
In googling for answers, I came across the recommendation to issue an
Answer followed by a Wait of 2 or 3 seconds to let the SIP settle down
before playing back audio. I do indeed have this in place; in fact I
have been using that advice for quite a while now whether answering SIP
or not
I decided to play with the Wait times to see what would happen and this
is what I found:
Initially I was using "Wait,3" - in this configuration whether by
landline or cell phone, * would answer without any sort of ring
indication at all - just silence from the time you finish dialling until
asterisk starts to play some audio. I kept increasing Wait by 1 and
testing with no difference either in the lack of ring indication, or the
audio cutoff when using a cellphone until I reached "Wait,7". At this
point, there is still no ring indication, but the audio cutoff when
calling via cellphone is fixed. Increasing to "Wait,8" gives exactly 1
ring, then * answers and the audio is perfect calling from cell
phone...each additional second of wait time above 8 gives additional
ring indication, and perfect audio...
1) Should asterisk really take 7 seconds of wait for SIP to "settle" and
not cut off audio?
2) Why would a call from a landline phone have no cutoff problems, even
with a "Wait,3"?
3) I expected that there would either be no ringing indication at all,
or that it would start immediately (or soon) after dialing. Why is
there no ring indication unless you "Answer" then "Wait,8"?
4) If there is no ring indication prior to * answering, and I have no
"Ringing" command configured in * anywhere in my extensions.conf, where
is this ringing coming from?
This has been a bit rambling, I apologize...any feedback greatly
appreciated.
Marty
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