imageCLASS MF810Cdn Fax Machine - Dialing Prefix

[spellm_gov]

We have a Laser Class 810 fax machine (yes, some people still use it).  Our phone system requires dialing a prefix to get an outside dial tone.  I am looking through the manual for instructions for programming the dialing prefix in so that it is transparent to all fax users.  I want the fax user to just enter the 10 digit tel number for their destination fax machine.  I can't seem to find this.  

I have found the dialing codes and can make a prompt to ask the user to enter the prefix, but they would have to dial it every time.  Any help would be welcome.  Thanks

[shadowsports]

Greetings,

I would pursue programming the dialing prefix into the AddressBook.  (Entry 1).  A user would select it, and add digits manually (the area code and phone number).