[Asterisk-Users] Address Separator hex b causes callerid rejection

bam bam at cqm.co.uk
Mon Feb 2 05:59:42 MST 2004


The problem is that the ISDN call to our switch has the screening indicator 
set to "untrusted", to the switch sticks 0xb on the front of the CLI. BT 
then drop the CLI altogether.

So I need to find a way of fiddling with the * presentation.

At 12:29 02/02/04, you wrote:
>I missed your earlier message, but to try and help:
>
>a) You are correct, the hex 'b' usage is only valid in the UK specific BT
>IUP SS#7 interconnect protocol and therefore is nothing to do with PRI usage
>whatsoever (or indeed ISUP SS#7).
>
>b) In q931.c these various flags can be set for outbound CLI (caller id),
>from user provided not verified, user provider verified, user provided
>verfication failed, and network provided.
>
>c) BT however will only accept CLI that you are authorised to send -
>whatever the state of the flags, this means that you can only send CLI that
>matches numbers that have been allocated to your PRI. If you are trying to
>do otherwise this will always fail.
>
>Linus





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