Can I disallow all outbound calls except a few?

Yes, you can ... To disallow all calls, simply add * to the disallow register 05, as follows:

#0*  

05    

*      

 

99  

hangup

If you wish to alllow dialing of certain numbers, please use register 08, as follows:

#0* 

05   

*    

 

08  

(enter number 1 e.g. 305-558-5577)  

08 

(enter number 2 e.g. 786-221-5997)

(you can keep adding numbers to the allow register)

99
hangup

You should hear a beep after each programming line above.