I didn't read the part about having his fax go out line 6 when dialing 9. Then if your SW level and processor are not current enough ( I also think 4.XX), you will have to modify the LCR tables. If you change the hunt order, than all phones and faxes will follow that order on outgoing LCR.

Or instead of 9, you could dial #7006 before dialing, but that's a lot to add.

I usually don't recommend putting faxes on a system with analog trunks, expecially if you use the fax for incoming also. An exception may be if the fax is not used much, and primarily for outgoing, and you need the extra line for peak call volume, or you don't very many lines.

David
Tele Express Business Systems