
M
I
V
OICE
4222 O
FFICE
(DBC 222)
FOR
M
I
V
OICE
MX-ONE
67
2/1553-ANF 901 54 Uen F7 2018-12-03
13
ACCESSORIES
13.1
OPTION UNIT
The DBY 420 01 allows connection of either:
Extra bell
Activated in parallel with the ring signals
Busy signal
Activated during speech
Combined Extra Bell and Busy signal
Activated in parallel with the ring signals and steady active during speech
Note:
Calls on another free line (that is, line 2) does not activate the Extra bell function.
For installation of the DBY 420 01 option unit, see installation instructions for
TELE
-
PHONE 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
222 telephone):
•
Press
C *
and
1
simultaneously for 1 second. The display now shows
OPTION
PROGRAMMING
.
The present function is indicated by the lamp on the Line 2 key.
Off
Extra bell (default setting)
On
Busy signal
Flashing
Combined Extra bell and Busy signal
To change the function:
•
Repeatedly press the Line 2 key to set the requested function.
To exit the programming mode:
•
Press #