[Asterisk-Users] Outbound Caller ID number on E1

[Steve Underwood]

Garth van Sittert wrote:

> Hi All
>
> I am having a problem setting the outbound callerid number on a PRI E1 
> in South Africa.  The outbound number keeps on appearing as the main 
> PRI number.  How does it work between Asterisk and the Telko?  More 
> importantly how do I get it working?
>
> Kind Regards
> Garth

Telcos usually arrange outgoing CLI in one of 3 ways:

- a free for all - you can put what you like as your CLI, and no checks 
are made

- a rigid arrangement - no matter what you give as the CLI, the telco 
will replace it with a fixed value before passing the message on

- a constrained arrangement - if you give a CLI within the range that is 
valid for you, it will be passed on. If you give something which is not 
allocated to you, the telco wil replace it with a fixed value.

Sounds like you do not have the first arrangement. You might have the 
third, though. It could be you just aren't specifying your number 
correctly - either the digits themselves or the TON/NPI pair might not 
be right.

Steve