Nortel Networks 2700 User Manual
Appendix A Technical specifications 97
Nortel VPN Router Installation — VPN Router 2700
You need a DSU/CSU (digital service unit/channel service unit) between the
WAN connection and the gateway. You can order a V.35 or X.21 cable to attach to
the connector. With this cable, the WAN adapter can function as DTE (data
terminal equipment).
WAN connection and the gateway. You can order a V.35 or X.21 cable to attach to
the connector. With this cable, the WAN adapter can function as DTE (data
terminal equipment).
provides the V.35 cable pinouts.
provides the X.21
cable pinouts. (The pair suffix A or B refers to an individual wire within a twisted
pair.)
pair.)
Table 32
V.35 cable pinouts
Standard-wired
end 28-pin male
Signal name
Pair number
and conductor
and conductor
Special-wired
end 34-pin male
Notes
2
TXDA
pair 1A
P
14
TXDB
pair 1B
S
3
RXDA
pair 2A
R
16
RXDB
pair 2B
T
15
TXCA
pair 3A
Y
12
TXCB
pair 3B
AA
17
RXCA
pair 4A
V
9
RXCB
pair 4B
X
24
SCTEA
pair 5A
U
11
SCTEB
pair 5B
W
4
RTSA
pair 6A
C
19
RTSB
pair 6B
no conn
Note 1
5
CTSA
pair 7A
D
13
CTSB
pair 7B
no conn
Note 1
6
DSRA
pair 8A
E
22
DSRB
pair 8B
J
20
DTRA
pair 9A
H
23
DTRB
pair 9B
no conn
Note 1
8
DCDA
pair 10A
F
10
DCDB
pair 10B
no conn
Note 1
18
LL
pair 11A
L
21
RL
pair 11B
N