17
MINIATURE LOCAL MUX-12
Table 3-1. Sub-channel connector pin assignments.
CCITT V.24
EIA RS-232C
Pin No.
Signal Name
Description
102
AB
7
Signal Ground
Common signal.
103
BA
5
Transmit Data
Serial data from
DTE into the Mux.
104
BB
3
Receive Data
Serial data output
from the Mux
105
CA
2
Request to Send
Connected to CTS.
106
CB
8
Clear to Send
Connected to RTS.
107
CC
6
Data Set Ready
A positive level
from the Mux
except when either
a sync loss occurs
or remote loopback
is performed.
109
CF
4
Receive Line
A positive level
Signal Detector
from the Mux
(Carrier Detect)
except when either
a sync loss occurs
or remote loopback
is performed.
—
—
1
+V output
A positive
unregulated voltage
to power external
equipment (up to
120 mA total).
Table 3-2. Main channel’s connector pin assignment.
Pin No.
Signal Name
Description
1
RX-A
Receive Pair
2
RX-B
7
TX-A
Transmit Pair
8
TX-B
