Specifications

Installation and Operation Manual Appendix A Pinouts
ASMi-31 Ver. 3.0 V.24, V.35, X.21 and RS-530 DTE Interface Connectors A-3
Table A-1. DTE Interface Signal Assignments (Cont.)
RS-232 V.35 RS-530 X.21 Description Signal
Function
DB-25
Stand-
alone and
Card Cage
DB-25
Card
Cage
34-Pin
Standalone
Pin Circuit
DB-25
Standalone
and Card
Cage
DB-25
Card
Cage
DB-15
Standalone
Pin Circuit
(Function)
Transmit
Clock
15 14
10
Y SCT(A) 114
a SCT(B) 114
15
12
15
12
6 S(A)
13 S(B)
(Signal
timing)
A transmit data rate
clock for use by an
external data source.
Positive clock
translations
correspond to data
translations.
Receive
Clock
17 23
22
V SCR(A) 115
X SCR(B) 115
17
9
A receive data rate
clock output used by
an external data sink.
Positive clock
translations
correspond to data
translations.
Local
Analog
Loop
18 18 L and j 18
A control signal input,
which, when on, sets
ASMi-31 into Local
Analog Loopback
(V.54 Loop 3).
Remote
Digital Loop
21 21 N and h 21 A control signal input
which, when on,
commands
ASMi-31 to send a
remote Loopback
command (V.54 Loop
2) to the remote
ASMi-31.
Test
Indicator
25 25 n and k 25 A Control Signal
output from
ASMi-31; positive
during any test mode.