Outgoing Caller ID for only selected users

[Mindly]

Using:
IPO 7.0, Basic (Partner)
PRI

When users dial out, caller ID sent is same for all users.
Would like to, for ONLY a select group of users, send their personal DID rather than main number.

Not sure how to accomplish this on BASIC PARTNER edition.

Any assistance would be appreciated.

 

[intrigrant]

You might find the answer here :

http://www.tek-tips.com/threadminder.cfm?pid=1783

but I think it is not possible