Siemens 3000 - Manual (Page 72)

Step-by-Step
Group functions
64
Forwarding off
c
Press the Talk key.
Call the system menu.
> < [
Select and confirm the menu item.
> < [
Select and confirm the menu item.
> < [
Select and confirm the menu item.
o
Enter a line number.
a
Press the On-hook key to end the process.
Menu
Service?
More features:
#501=Forward Line:
Off?