Cabletron Systems SmartSwitch SBU128, Руководство пользователя

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The Hardware
80-10200000-01 2–3
2.3 Interface Pin Assignments
2.3.1 User and Link
Pin assignments of the USER and LINK connectors will vary with the
interface module type.
The USER ports are configured as physical DCEs and the LINK ports are
configured as physical DTEs. Their pin assignments are:
V35 operation
Pin Circuit Signal
A 101 Protective Ground
B 102 Signal Ground/Common Return
C 105 Request to Send
D 106 Clear to Send
E 107 Data Set Ready
F 109 Data Channel Received Line Signal Detector
H 108 Data Terminal Ready
J 125 Calling Indicator
K - Unused
L 141 Local Loopback
M - Unused
N 140 Loopback/Maintenance Test
P 103(A) Transmitted Data A
R 104(A) Received Data A
S 103(B) Transmitted Data B
T 104(B) Received Data B
U - Unused
V 115(A) Receiver Signal Element Timing A
W - Unused
X 115(B) Receiver Signal Element Timing B
Y 114(A) Transmitter Signal Element Timing A
Z - Unused
AA 114(B) Transmitter Signal Element Timing B
BB - HH Unused
JJ Unused
KK Unused
LL Unused
MM - Unused
NN 142 Test Indicator