4/1553-ANF 901 54 Uen D4 2014-01-14
125
A
CCESSORIES
13
Accessories
13.1 Option
unit
The DBY 420 01 allows connection of either:
Extra bell
Activated in parallel with the ringing signals
Busy signal
Activated during speech
Combined Extra Bell and Busy signal
Activated in parallel with the ringing signals and steady active
during speech.
Note:
Calls on another free line (for example line 2) does not activate
the Extra bell function.
For installation of the DBY 420 01 option unit, see installation instruc-
tions for
TELEPHONE SETS DBC 222 01, DBC 223 01, DBC 224 01,
DBC 225 01, KEY PANEL UNIT DBY 419 01 AND OPTION UNIT DBY
420 01
.
To check or change the function (after mounting of the DBY 420 01
to the DBC 225 telephone):
Entering via the top menu PhoneSet
:
•
Select the top menu function
PhoneSet
.
•
Frame the menu
Option Units Settings
and press the soft-key
Select
.
Entering using a key combination:
•
Press
C, *
and
1
simultaneously for 1 second.
A tone signal is heard, and the display shows:
Note:
The soft-key Exit is only available when firmware revision R3F or
later is active for the telephone. See Firmware indication to check
the firmware revision.