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

[John]

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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