[Linphone-users] Dial plan with Linphone

[Don AE5K]

I'm a beginning Linphone user and have been delighted with improvements 
recently.  I also admit to not being an expert with voip, so bear with 
me if my question(s) sound stupid...

My IP phone (Polycom) that I also use has provision (like Asterisk) for 
a dial plan that restricts/allows certain number combinations or 
patterns to be dialed.  I have found nothing like this with Linphone. 
Am I missing it, or does Linphone not have this ability?

Specifically, I want to restrict a friend who uses Linphone to only one 
or two outward dialed numbers when using my sip account.  This is mainly 
to allow this friend to try out my VOIP provider's service without the 
danger of draining my credit account.  (The friend doesn't know enough 
about computers or voip to get around anything Linphone might offer in 
this way.)

Thanks,
Don