[Freeswitch-users] UK ISDN outgoing CLI (was Re: FreeTDM - Sangoma B700 - ISDN connection questions - UK)

Stephen Wilde wstephen80 at gmail.com
Fri Jul 8 03:00:37 MSD 2011


With some providers I have to set the "screening indicator" of calling party
number to "network provided" ... you can add this try...

(freetdm_screening_ind = network-provided)

Stephen

On Fri, Jul 8, 2011 at 12:32 AM, John <freeswitch at earthspike.net> wrote:

> **
> Jan,
>
> I have tried every combination of unknown, national and international with
> every combination of number length.  I have also confirmed that by using
> wanpipemon to capture the D-channel messages.  When I went through them with
> Wireshark and compared them with Q.931, everything was being set correctly
> by the Sangoma card/drivers.  I am at the point now where I need someone who
> has worked with BT ISDN switches to tell me what they can accept.  It seems
> that this is a national secret over here, or instead that they can accept
> almost anything and my lines have been configured to override the outgoing
> calling number with the base number.  Either way, the only way in which I
> think I am now going to get a result is by booking a fault.  Your helpful
> comment about modern switches being able to work this out also confirms that
> I am probably not looking at a Q.931 formatting error on my part, but on a
> blockage in the exchange.  I don't have a problem with the called number,
> for example.
>
> John
>
>
> On 07/07/11 23:09, Jan Berger wrote:
>
>   I must admit I don’t remember what CLIP and CLOP is – and my Q.931
> experience is getting a bit rusty…****
>
> Can you get a snoop of L3 out and in so I can see what you send and what
> the switch responds back?****
>
> I prefer to use Called and Calling – The numbers contain a few bits that
> tell what number this is. The most common are unknown, national and
> international. These bits must match the actual number you send. The 10
> digit number is a unknown, the 11 digit is a national. International start
> with 00 nn****
>
> On top of that you will face that modern switches are quite capable and
> able to configure whatever behaviour they want per line with regards to
> called/calling – so you need to find out exactly what the switch expect on
> both called and caller for outgoing to behave as you want. ****
>
> /Jan****
>
> >>
> >> On our PRI systems we are sending 10 digits (2071231234), and on the
> >> BRI system we are sending 11 digits (02071231234).
> >>
>
> ****
>
> ** **
>
>
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