I think my DTMF problems are solved, but the solution isn't crystal
clear. I reverted back to 1.2.6 and then had the idea to have asterisk
email me every time someone hit the invalid extension. The email
contained the number they dialed and the channel (read sipura box) they
came in on. After a day and a half I noticed 99.9% of my invalid
extensions were all coming from one sipura box that happened to be
running version 3.1.10 firmware. I downgraded to 3.1.3 and the DTMF
problems disappeared. Thing is, I *know* I was getting invalid
extensions on calls from the other sipura box (which is running 3.1.7)
when I was running asterisk 1.2.7.1 but I don't know how many and I'm
not going back to find out just yet. (Need to wait for my users to stop
thinking its a useless POS first).
So there *may* still be an issue with 1.2.7.1, but I definitely had an
issue with sipura firmware 3.1.10 and DTMF detection.
Thanks to everyone who submitted ideas.
-Dave
Dave Fullerton wrote:
I have reverted back to 1.2.6 and set my sipuras to tx dtmf as info so I
can see them with sip debug. I'll see if there is a difference and
report on my findings in a couple days.
-Dave
Bryan Boatright wrote:
I too am experiencing DTMF problems with 1.2.7.1 that I did not
experience with recent prior versions. I've backed up to version
1.2.6 and so far DTMF detection is working reliably (but that's only
with about 10 calls worth of testing).
I've only had problems over SIP channels. Zap channels did not have
problems with 1.2.7.1. I do not have any IAX channels, so cannot
comment on that.
I know others tend to discount DTMF problems because of "known
problems" with how Asterisk handles DTMF, but there does seem to be
enough anecdotal evidence that something bad has recently happened to
make things worse.
Dave, would you mind trying version 1.2.6 to see if that also resolves
your problems?
Dave Fullerton wrote:
Greetings,
I'm using asterisk to connect our three locations together with a
sort of inter-company auto attendant connected like this:
PBX (fxs) <-> Sipura 3k (fxo) <-> Asterisk <-IAX-> remote asterisk
It works like this: Person picks up their phone and dials a number to
get to the auto attendant (I don't have any FXO ports available on
our PBX to do it the "right" way). The attendant answers and asks
them the remote extension they want to dial. This setup has worked
very well for several months. Last week I upgraded to 1.2.7.1 from
1.2.4 (I think). Since then I've been having trouble with the
auto-attendant correctly detecting DTMF (missing digits). Some times
it works flawlessly, others I have to try over and over before it is
detected correctly. It isn't even consistently dropping the same
digit from what I can see on the console. The only thing I've found
is that I have a better chance of it working if I wait for the prompt
to finish before dialing. I have changed the DTMF method from rfc2833
to info and finally inband with only a little change (inband seems to
work the best).
Has anyone else run into similar problems or have any more
suggestions to try?
This is the attendant portion of my extensions.conf:
[inter-attendant]
exten => s,1,Answer
exten => s,2,Wait(1)
exten => s,3,Set(TIMEOUT(response)=10)
exten => s,4,Background(enter-ext-of-person)
exten => i,1,Playback(invalid)
exten => i,2,Goto(s,4)
exten => i,3,Hangup
exten => t,1,Playback(goodbye)
exten => t,2,Hangup
include => tests
include => fullertonpbx
include => intercompany
Thank you for any insight you can provide.
Dave Fullerton
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