Oki 87 - Manual (Page 30)

18 OKIOFFICE 87 User’s Guide
10 Close the top cover of the MFP machine.
Tip: Ensure that the top cover is firmly closed by pressing down hard
on both sides of the top cover.
Connect to the Telephone Line
1 Insert one end of the telephone cord into the LINE terminal at the
back of the machine.
2 Insert the other end of the cord into your wall telephone jack.
Tip: Now, you can connect either an external telephone or the
external handset option for your MFP machine. See the
instructions below.