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

[Gavin Henry]

Hi John,

We set this up for a customer using a Sangoma card and FusionPBX not
long ago. I can dig out the config next week when back in the office.
It's for ISDN30e but should help.

Thanks.

On 7/7/11, 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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>

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