Sony IT-M704 Operating Instructions Manual page 14

Step 2: Setting up the phone (continued)
Assigning station number
Ensure to connect all phones (IT-M704 or IT-M804) to LINE 1 jack
correctly, and then assign the station number to all phones. To confirm
the assigned station number is set correctly, make an intercom call one
another. See "Talking between the phones" on page 37.
Note
If the number already used for other phone or a number except for 01 to 16 is
entered in step 4, "INVALID NUMBER" will be displayed. Enter the different
number.
14 US
Getting Started
1
Press (PROGRAM).
2
Press b(*) or (#)B until
"STATION #" appears on the
display.
3
Press (PROGRAM).
STATION #=??
4
Enter the two digits station
number (01 to 16) by pressing
the dialing keys.
5
Press (PROGRAM).
You will hear a long
confirmation beep.