Specifications

94
CSU/DSU MS DBU
Table A-4. Pin Assignments for Primary V.35 Connector
Pin CCITT Description
A 101 Protective Ground (PG)
B 102 Signal Ground (SG)
C 105 Request to Send (RTS)
D 106 Clear To Send (CTS)
E 107 Data Set Ready
F 109 Received Line Signal Detector (CD)
H — Data Terminal Ready (DTR)
J — Ring Indicator (RI)
L — Local Loopback (LL)
N — Remote Loopback (RL)
R 104 Received Data (RD-A)
T 104 Received Data (RD-B)
V 115 Receiver Signal Element Timing (SCR-A)
X 115 Receiver Signal Element Timing (SCR-B)
P 103 Transmitted Data (SD-A)
S 103 Transmitted Data (SD-B)
Y 114 Transmitter Signal Element Timing (SCT-A)
AA 114 Transmitter Signal Element Timing (SCT-B)
U 113 External TX Signal Element (SCX-A)
W 113 External TX Signal Element (SCX-B)
NN — Test Indicator (TI)
Table A-5. Pin Assignments for Control Connector
RJ Pin# Function Direction
1 GND
2 RTS I
3TD I
4 DSR O
5RD O
6 CTS* O
7 not used not used
8 not used not used
*Used for hardware flow control.