Re: SIP endpoints CANCEL when PRI receives Cause Code 31

[Dale Noll <dnoll@xxxxxxxxx>]

On 05/23/2012 02:59 PM, Richard Mudgett wrote:
> > We have an Asterisk server which connects to another Asterisk server
> > acting as a PSTN gateway. This gateway machine has Digium TE210P card
> > connected to a pair of PRIs.
> >
> > For the most part, all is working well, however there are some
> > specific
> > telephone numbers that my users have attempted to call, but we unable
> > to.
> >
> > I set debugging on and determined that when the the gateway machine
> > dials one of the numbers in question, we receive from the PSTN an
> > ISDN
> > cause code 31, which in my understanding is not an error. This is
> > then
> > passed back to the originating Asterisk server via IAX as progress.
> >   It
> > is then sent to the originating endpoint as a sip message 183
> > 'Session
> > Progress'.  2 seconds after this 183 progress message is sent, the
> > endpoint sends a SIP CANCEL message and the channel is torn down.
> >
> > I have the prematuremedia=yes and progressinband=never in the
> > sip.conf
> > file which looks like it could be a solution, however I believe that
> > because we are getting ISDN Call Proceeding and a corresponding SIP
> > 100
> > Trying message that this setting has no effect.
> >
> > I have tried from several different endpoint types with the same
> > results. I have verified that the numbers in question are in fact
> > operational.
> >
> > Any suggestions?
> >
> > Asterisk version is 1.8.7 on both hosts
> > Dahdi version 2.5.0
> > libpri version 1.4.12
> You should upgrade Asterisk to at least v1.8.8.  A regression in the
> Asterisk v1.8.7 ./configure script does not setup Asterisk to use
> libpri correctly.  Most supplementary service features and a hangup fix
> supported by that version of libpri do not get enabled.
>
> Richard

Richard,

Thanks.  That appears to have done the trick.

Very much appreciated.

Dale

--
"The truth speaks for itself. I'm just the messenger."
     Lyta Alexander - Babylon 5


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