[asterisk-users] DTMF not detected, time out

[asterisk asterisk]

Hi,

I encounter this problem recently after quite some months of my asterisk.

I have a SIP trunk for dial in and out.
When dial-in, it matches the callerid number and decides. If matched, it
will either go into an a very brief IVR. The IVR allows caller to dial
internal extension.
All along it is working well both from outside call and internal users.
Now for unknown reason, it fails with a timeout and hangup. It is the only
message I can see at the console.
But internal user can do this without any problem.

Appreciate if someone can help.

CK
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