To cancel via DIRECT INWARD SYSTEM ACCESS (DISA)
Press
and you will hear DISA dial tone
Dial
Dial an extension number followed by that extension's Station
Restriction Password and you will have the same calling
capabilities as that extension
Wait for the intercom dial tone
Press
Enter the Call Forward Code
Enter the Call Type number you wish to cancel
1 = All calls (CO/Intercom)
2 = CO calls only
3 = Intercom calls only
Wait for a confirmation tone
Hang up
DISA USER GUIDE - 357