[asterisk-users] Is it valid to Dial(DAHDI/g0/12345wwwww88888888) on an ISDN trunk?

[Richard Mudgett]

> > I am trying to collect information regarding a bug report for
> > Elastix (http://bugs.elastix.org/view.php?id=1146). In this bug,
> > an user has asterisk-1.8.7 and dahdi-2.4.1.2. He is trying to make
> > an
> > outbound call through an ISDN trunk, by placing
> > Dial(DAHDI/g0/12345wwwww88888888) in order to send 12345, then
> > wait a period, then send 88888888. I am still waiting for a
> > response on what particular
> > telephony card he uses, and the kind of ISDN setup (T1/E1/BRI)
> > being used, but I want to know: Is this dialstring expected to
> > work with an ISDN trunk? If so, are there any configurations that
> > might
> > cause it to stop working? The user claims that this same dialstring
> > worked with Elastix 1.6 which had dahdi-2.2.0.2 and
> > asterisk-1.4.26.1.
> >
> > Some additional information: the user reports that the dial attempt
> > fails with hangup cause 28. From
> > http://helpdesk.netcentral.co.uk/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=293
> > <http://helpdesk.netcentral.co.uk/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=293>
> > [^
> > <http://helpdesk.netcentral.co.uk/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=293>]
> > :
> >
> > Code No. 28 - invalid number format (address incomplete).
> > This cause indicates that the called party cannot be reached
> > because the called party number is not in a valid format or is not
> > complete.
> >
> > Is it actually possible that the code is trying to send a string of
> > 'w's through the ISDN link? Or am I misunderstanding?
> 
> I'm using 'w' to force sending the 'sending complete' IE in an ISDN
> setup message.
> But I don't know the usage of multiple 'w' in the  dialstring.

See https://issues.asterisk.org/jira/browse/ASTERISK-19176

Richard