[Asterisk-Users] Setting CallerID on UK BRI line

[bj at hichrom.com]

Hi Nick, 

yep, my mobile displays caller id for other numbers - and it even works 
perfectly displaying caller id information set by a cheap ISDN pbx on the 
*same* ISDN line as the Asterisk box. Curious. Even without setting a 
callerid on the outgoing calls I get "No Caller ID" on my mobile (or other 
phones  - including other BT lines). BT are not withholding a number and I 
can change the callerID presented on the other phone system and it works 
perfectly. 

Strange, I will investigate more later. 

Thanks, 

Benjamin





"Nick Barnes" <nick at bcn-it.co.uk> 
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19/10/2004 12:18
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RE: [Asterisk-Users] Setting CallerID on UK BRI line







Benjamin: 
 
> So I dial 9 followed by my mobile number and the call comes
> through fine but the display says "No Caller ID". 

Assuming that your mobile is displaying caller IDs for other numbers and
your ISDN lines are with BT.....

There are two ways in which the number can be withheld:

1 - Caller ID is withheld on the line you're calling from. If this is the
case, prefix the dialed number with '1470' which should release the caller
ID.

2 - You're blocking the caller ID yourself. If this is the case, remove 
the
prefix '141' from the dialed number.

If you don't set a caller ID to anything or set it to an invalid number, 
BT
will default the caller ID to the base number of the ISDN device, so 
remove
the 'SetCallerID' line to do your testing. Otherwise, you need only four 
or
six least significant digits of the number for the SetCallerID command.

Nick Barnes


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