Thank you very much for the answers - I have hooked up a special adapter and active loudspeaker on each of the three BT lines, but when I got a line and dial a number I cannot hear any other digits than those I dial - I would have expected something like seven DTMF bursts/digits (16662xx) before my digits are audible. Near the pbx I have noticed a small white box saying 'Smiths communications' and 'SC14' on the lid. The box is connected to two cables - one to a power supply, the other is a 4 pair telephone installation cable with 3 pairs connected. Next to the box is a switch with some labels on it: one label says 'LINE 1'. The other two labels describe the switch settings - 'SYSTEM' and 'A/PH MOD'. I have the suspicion that the white box has something to do with the billing and that it sends some fast data over one of the lines when an outside call is initiated, but I am not sure. I'll continue to hunt.

I also asked the telecom provider but they were not very helpful and couldn't 
(or didn't wish to)
give me any information as to the technical details.

I'll hunt on...

P



Robinson Tim-W10277 wrote:
You just need to do something like

exten => _9.,1,Dial(Zap/g1/1666$CALLERIDNUM${EXTEN:1})

You can also do some useful translations like

exten => _9[2-8]XXXXXX,1,Dial(Zap/g1/1666$CALLERIDNUM0113${EXTEN:1})

This will look for 9, then a local number beginning 2,3,4,5,6,7,8 , and
dial out the extension number, followed by the 0113 area code.

You will need to make sure that 999 and 112 go direct to BT by using
another line in the extensions file. E.g.
exten => 9999,1,Dial(Zap/g1/999)
exten => 9112,1,Dial(Zap/g1/112)

And probably

exten => 999,1,Dial(Zap/g1/999)

Just to be on the safe side!

You could also write a little macro to kick another user off their call
to allow the emergency call to get priority.

There is just so much cool stuff you can do.  But do test well!

Rgds
Tim

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Peter
Hoppe
Sent: 25 November 2004 13:34
To: [EMAIL PROTECTED]
Subject: [Asterisk-Users] Billing (itemized) in the UK

If the protocol is correct, I could construct a dial command such as

exten => _9.,1,Dial(Zap/g1/1666<ID>${EXTEN:1})

or so - I would just need a way to construct <id> - and then any caller
from an inside device would just prepend a '9' before the real number. I probably would also bar
simple '9' dialling to get an outside line... lets see.
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