Comelit MT CT 01 - Manual (Page 63)

GROUP S.P.A.
MT CT 01 62
Indirectly, by means of a pushbutton, you access the window relative to:
e. enabling line on branches (ref. Parameter 31-32). The associated window is as follows:
11.2.3 DISA configuration pushbutton
By clicking over this pushbutton, the window relative to the parameters of the message card (DISA) opens.
The following parameters are programmed in this window:
a. Enabling DISA on lines (ref. Parameter 59-60)
b. Enabling COURTESY on lines (ref. Parameter 63-64)
c. Enabling COURTESY on the external unit (ref. Parameter 65-66)