Table of Contents
Advertisement
98 Appendix A Technical specifications
Table 32
Table 32 V.90 modem cable pinouts
Pin
1
2
3
4
Single V.35/X.21 WAN interface card
The single V.35/X.21 WAN interface card has a single DB28S connector that
provides the signals needed to interface to V.35 and X.21 equipment.
page 98
Figure 43 Single V.35/X.21 WAN interface card
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).
Table 33
cable pinouts. (The pair suffix A or B refers to an individual wire within a twisted
pair.)
Table 33 V.35 cable pinouts
Standard-wired
end 28-pin male
2
14
NN46110-318 02.01
provides the V.90 modem port cable pinouts.
Function
N/C
Tip
Ring
N/C
shows the single V.35/X.21 WAN interface card.
provides the V.35 cable pinouts.
Signal name
TXDA
TXDB
CS160011A
Table 34 on page 100
Pair number
and conductor
pair 1A
pair 1B
Figure 43 on
provides the X.21
Special-wired
end 34-pin male
P
S
Notes
Advertisement
Table of Contents
