[asterisk-users] DTMF

[John T. Bittner]

Anyone see this before?

I have a main Asterisk box 11.4 connected to Windstream via SIP trunks in my colo.
So as a did comes in they are routed to appropriate customers, in this case another asterisk 11.4 box.

All is working well with the exception of DTMF. Losing the last digits so say someone hits 123... on the customer box I only get 12
This is the weird part, it only happens on 1 DID. If I point another DID from the same carrier to the customer it works. Both the main asterisk box and customer are running real IP's (no nat)

Did a test and routed the DID to a IVR on my main system and I see the correct DTMF, so somewhere in the process of local bridging DTMF is getting messed up. Both carrier and customer were set to RFC2833.

Upgraded Asterisk 11.4 to 11.5 on both systems same issue.

Changed customer to DTMF info and it fixed it.

Could line level of a DID cause this?  I researched this a lot and find conflicting answers.

How does asterisk local bridge calls, does it affect the line levels. My understanding of RFC2833 is that line level issues should not affect it.



John Bittner
CTO
[cid:image003.png at 01CE6E8B.C39E8B20]
380 US Highway 46, Suite 500
Totowa, NJ 07512
Phone: 201.806.2602 x2405
Fax:       201.806.2604
Cell:       973.390.1090
www.xaccel.net<http://www.xaccel.net/>

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