[asterisk-users] DTMF is not working occasionally over IAX Trunk

[Rajkumar S]

Hi,

The servers B & C are running in a virtual machine (linux kvm) and
uses ztdummy for timing. Server A has a digium card. I am not sure if
this is the cause of the problems I am facing.

raj


On Fri, Jul 3, 2009 at 7:16 PM, Rajkumar S<rajkumars at gmail.com> wrote:
> Hello,
>
> I have a 3 server asterisk configuration where one asterisk (say A) (v
> 1.4.25) has a digium card connected to E1 from which calls are routed
> to another asterisk server  (B) (1.6.0.9) over IAX trunk from which
> calls get routed to third server (C) (1.6.0.9) again via IAX trunk.
> SIP clients are connected to third server. A is the PSTN termination
> server, B runs the menu and AGI and C is where SIP clients connect.
> SIP clients can also dial outside and call goes like C -> B -> A ->
> PSTN.
>
> An IVR is implemented in B. extensions.conf looks like:
>
> exten => s, 1, SET(MENUFLOW=s)
> exten => s, n, Background(welcome)
> exten => s, n, WaitExten(30)
> exten => *, 1, Goto(menu-language,s,1)
>
> like this it goes couple of menus deep. A typical sequence is like * 3
> 2. Some times Background will continue to play even when I press *. It
> will go through. Some other times as soon as I press * 3 it will go to
> menu option of * 3 3. ie the 3 is repeated.
>
> I never had this problem on A. So I can rule out the DTMF problem in
> E1. So this has to be some thing with the way E1 is getting
> transmitted over IAX trunk.
>
> My iax.conf in A is like:
>
> [general]
> bindport = 4569
> bindaddr = 0.0.0.0
> disallow=all
> allow=ulaw
> allow=alaw
> allow=gsm
> jitterbuffer=no
> forcejitterbuffer=no
>
> [ccsrv-a16-in1]
> type=peer
> host=192.168.79.177
> auth=plaintext
> secret=password
> username=a16-in1
> qualify=yes
> trunk=yes
>
>
> and in B
>
> [general]
> bindport = 4569
> bindaddr = 0.0.0.0
> disallow=all
> allow=ulaw
> jitterbuffer=no
> forcejitterbuffer=no
> transfer = no
>
> [a16-in1]
> type=user
> auth=plaintext
> secret=password
> context=inbound-calls
> qualify=yes
> trunk=yes
>
> I have also posted another mail with calls not terminated with same
> IAX trunk. I am not sure of they are related, but any help to resolve
> this would be very helpful
>
> with regards
>
> raj
>