54
MINIATURE 2-CHANNEL STATISTICAL MULTIPLEXOR
Table A-2. Sub-Channel Connector.
CCITT
EIA Pin
Signal Name
Description
V.24
RS-
Circuit 232C
Number Line
101
AA 1
Protective Ground
Chassis ground (may be isolated from
signal ground or connected to it; refer to
Section 4.3
.
102
AB 7
Signal Ground
Common signal and DC power-supply
ground.
103
BA 5
Transmit Data
Serial digital transmit data from the Mux.
104
BB 3
Receive Data
Receive data provided by Mux receiver.
105
CA 2
Request to Send
Received by Mux from DTE, controls
DCD at remote side.
106
CB 8
Clear to Send
A positive level from the Mux indicates
that the terminal is allowed to send
data. This pin is used for hardware flow
control. Computers or terminals that do
not support this pin (they send data evn
if CTS is negative) must have software
flow control.
107
CC —
Data Set Ready
The Mux sends positive level to DTE
when it is powered.
109
CF 4
Data Carrier Detect
If local and remote Muxes are
synchronized, then follows CTS from
sub-channel of remote Mux.
108
CD 6
Data Terminal Ready Used for end-to-end flow control.
