*65: Deactivates the caller id blocking on all outbound calls
From PhonePower Knowledge Base
Deactivates the user controlled Caller ID Blocking Feature for all outgoing calls that was activated with *61.
Once this feature is activated, you will send your Caller ID for every outbound call.
To use:
Pick up the Phone Power phone.
Once you hear a dial tone, dial *65 #.
Hang up the Phone Power phone.
All phone calls placed from the Phone Power phone will display the Caller ID information to the person you are calling.