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Connectors and Cables 2-11
UNIVERSAL to V.35 Adapter Cable
To connect a SuperStack II bridge/router to a V.35 DCE device, cable
the UNIVERSAL connector using a V.35 adapter cable.
Figure 2-8 shows the pin assignments of the V.35 adapter cable.
When constructing your own V.35 adapter cables, the required cable
type is equivalent to Belden part number 9835. Cable length is limited
to CCITT standard V.11 Appendix I.2.
Figure 2-8 UNIVERSAL to V.35 Adapter Cable
You can order this cable from 3Com (part number 3C8035).
37-pin female connector
V.35 female connector
To UNIVERSAL port on bridge/router
To CSU/DSU
= twisted pair
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
B
F
L
R
V
Z
DD
JJ
NN
D
J
N
T
X
BB
FF
LL
C
H
M
S
W
A
EE
KK
A
E
K
P
U
Y
CC
HH
MM
Abbr
Sheild
SG
TS
SD (A)
SD (B)
RD (A)
RD (B)
SI
SF
SQ
SS
TT (A)
TT (B)
ST (A)
ST (B)
RT (A)
RT (B)
RL
LL
NS
SB
Name
Shield
Signal Ground
Term in Service
Send Data
Send Data
Received Data
Received Data
Signal Rate indication
Select Frequency
Signal Quality
Standby Select
Terminal Timing
Terminal Timing
Sending Timing
Sending Timing
Receive Timing
Receive Timing
Remote Loopback
Local Loopback
New Signal
Standby Indicator
Abbr
FG
SG
RTS
SD+
SD-
RD+
RD-
CTS
DSR
RLSD
DTR
SCTE+
SCTE-
SCT+
SCT-
SCR+
SCR-
-
-
RI
-
Name
Frame Ground
Signal Ground
Request to send
Send Data +
Send Data -
Received Data (A)
Receive Data (B)
Clear to Send
Data Set Ready
Recieve Line Signal Detect
Data Terminal Ready
Serial Clock Transmit External (A)
Serial Clock Transmit External (B)
Serial Clock Transmit (A)
Serial Clock Transmit (B)
Serial Clock Receive (A)
Serial Clock Receive (B)
Reserved for future use
Reserved for future use
Ring Indicator
Reserved for future use
braid
Pin
A
B
C
P
S
R
T
D
E
F
H
U
W
Y
AA
V
X
N
L
J
NN
Pin
1
19
28
4
22
6
24
2
16
33
32
17
35
5
23
8
26
14
10
34
36
SS2TRHWBook Page 11 Monday, May 5, 1997 3:11 PM