Ericsson DT59C - Manual (Page 32)

Incoming Calls
DT590 32
To disable Parallel Ringing temporarily
*21* ¿ #
Dial, enter the extension number and press.
Note: U.K., dial
* 2 *
Number
#
.
Ь Ы
Press.
Wait for the call timer to start in the display. Ъ Щ
Press to finish the procedure.
If you want to disable Parallel Ringing for all phones defined in the
list, follow the procedure for disabling the function from the phone
with the main extension number and enter the number of the
answering position.
If you want to disable Parallel Ringing for one specific phone in the
list only, follow the procedure for disabling the function from this
phone and enter its extension number.
To restore Parallel Ringing
#21#
Dial. Ь Ы
Press.
Wait for the call timer to start in the display. Ъ Щ
Press to finish the procedure.
Notes:
U.K., dial
# 2 #
.
If you want to restore Parallel Ringing for all phones defined
in the list, follow the procedure for restoring the function
from the phone with the main extension number and enter
the number of the answering position.
If you want to restore Parallel Ringing for one specific phone
in the list only, follow the procedure for restoring the function
from this phone and enter its extension number.