Toshiba GD-1210 - Manual (Page 159)

Registering the Terminal ID 157
8
Press either the [YES] or [NO] button for adding the international
code.
If you add the international code (your country/region code) in advance, you can let the
remote Fax know your country/region when communicating overseas.
<Example> Registration by adding international code in the terminal ID (234-567-8901).
9
Key in the terminal number, and then press the [ENTER] button.
To enter a pause “-”, press the [MONITOR/PAUSE] button.
10
Specify the LINE 2 NUMBER in the same way in specifying the FAX
NUMBER (steps 6-8).
y The line 2 number can be set when the optional 2nd line board (optional) is installed.
+12345678901
If the area code starts from "0", "0" will be omitted.
International code
If you press the [YES] button in step 7, "+" is added automatically.