Northern Modular Telephone ユーザーズマニュアル

With the Calling Number feature, you can create a charge account record and/or charge a call to an 
incoming number.

While on a call, to record the caller’s number for accounting purposes:
1.

Press 

˚. You hear three beeps followed by dial tone. The other party is on hold.

2.

Dial a charge account number or the caller’s number.

3.

Press 

˚ again to return to the call.