AT&T 202T User Manual page 17

4
0
I( h
~
FEATURE OPTION
External Control of
B*
CC (Data Set Ready)
A
F*
Clamp
E
TABLE A (Contd)
202T MODEM OPTIONS
DESCRIPTION
In
-
-
Out
- -
In
-
-
Out
- -
SWITCH SETTING
-
- -
-
- -
0
-
-
- -
- - -
X
-
- -
0
-
- -
-
-
- -
X
- - -
-
-
S4'.~WITCH CONTACT SETTING ON
··-· --··· --
Carrier Detector
ZL
In
Reset
ZM*
Out
ZN
in
Continuous Carrier
zo•
Out
State of CC
YB
On
(Data Set Ready)
During Analog
YA*
Off
Loopback
Local Copy on
Reverse Channel
ZE In
ZFt
Out
Grounding Option
Signal Ground
ZG* -
Connected to
(Modem)
Frame Ground
Signal Ground
ZH
Not Connected
Frame Ground
Signal Ground
ZI* Connected to
Grounding Option
Frame Ground
(Data Mounting)
Signal Ground
ZJ Not Connected
Frame Ground
X Rocker down on side adjacent to numbers.
0 Rocker up on side adjacent to numbers.
- Rocker may be in either position.
*
Factory furnished.
TRANSMITTER-RECEIVER
1
2 3
-
X
-
-
0
-
X
- -
0
- -
- -
X
- -
0
STRAPPING ON
REVERSE CHANNEL CP
Install E21-E22
Install E21-E23
SCREW SWITCH Sl SETTING ON
INTERFACE CIRCUIT
Sl Closed
to
Sl Open
,
STRAPPING ON 4OB1
DATA MOUNTING
Wire Strap if Power
Supply In
Wire Strap if Power
to
Supply Out
t Factory furnished instead of 4-wire option when reverse channel CP is installed.
-
PROVIDE
One Per
Modem
One Per
Modem
One Per
Modem
One Per
Modem
One Per
Modem
One Per
Modem
One Per
Modem
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