Toshiba GD-1210 - Manual (Page 91)

Mailbox Communication 89
Setting up relay mailbox
How to create a relay mailbox on sender's side is explained here.
1
Press the [FAX] button on the control panel.
2
Press the [ADVANCED] button to enter the advanced menu, and
then press the [ITU MAILBOX] button.
3
Press the [RELAY] button, and then press the [BOX SETUP] button.
4
Press the [ENTER] button.