00330-1199 <90-00045>
P
AGE
5
2. W
IRING
Wire the DTSS3A as required. Refer to Fig. 2 for a functional
schematic of the unit.
The DTSS3A uses a buzzer to announce incoming calls. A phone
with a ringer may be used with an external ringing generator
connected to the order wire terminal. (Refer to note 2, on Fig. 2.)
When using a phone with a ringer, replace the 44022-00 module
with a 44022-10 module.
The DTSS3A can be expanded to two or three phones at a single
location. To add phones, connect the bypass ports of additional
DTSS3A units to ports 2 and 4 of the bridge on the main order
wire terminal.
3. S
WITCH
AND
S
TRAP
S
ETTINGS
Refer to Tables A through F and Figs. 3 through 8 to set the
straps and switches on the modules and DTSS3A backplane.
44020 DTMF Decoder
Refer to Table A and Fig. 3 to set the straps and switches on the
DTMF Decoder.
T
ABLE
A - S
WITCH
AND
S
TRAP
S
ETTINGS
, 44020 DTMF D
ECODER
M
ODULE
INSTALLATION
CONTINUED
. . .
* Factory Setting
OPTION
Input Impedance
Bridging
600 Ohm
Input Level
-10 to +10 dBm
0 to -20 dBm
-10 to -30 dBm
Dial Tone Filter
In
Out
Dialing
12-digit
16-digit
SETTINGS
BRDG *
600 ohms
-10
0 *
+10
DTF IN *
DTF OUT
12 DGT *
16 DGT
* Factory Setting
OPTION
Auxiliary Output
* and #
A and C
* or A
Nonlatching
Externally cleared
Cleared by # or C
# or C
Nonlatching
Externally cleared
Cleared by * or A
SETTINGS
#2, *2, #1, *1 *
C2, A2, C1, A1
PLS *
EXT CLR
# or C CLR
PLS *
EXT CLR
* or A CLR
