MDI-X
Crossover
10/100
Ethernet
Powe r
M
D I-
X
C ro
sso
ve
r
10
/10
0
E th
e rn
e t
W
A N
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1 In
te rf
a c
e
V.35 Interface
P o
we
r
V.35 Interface connector
(DB-25)
Ethernet connector
(RJ-45)
Hardware Installation
32
Models 2603, 2621, and 2635 User Manual
3
• Initial Configuration
Figure 10. Rear view of the 2635 showing location of Ethernet and V.35 connectors
2635 IPLink
Use cable provided
with 2635 IPLink
V.35
Modem
DCE
M
DI-
X
Cros
so
ver
10/
10
0
Eth
er
net
WA
N
X.2
1 I
nte
rfa
ce
Po
we
r
Note
The OnSite comes with a V.35 cable configured as a tail-circuit. Use this
cable to interconnect the OnSite device’s V.35 port to a device configured as
a DCE.
Figure 11. Connecting the 2635 to a DCE device
The serial port on the OnSite Model 2635 is configured as a DCE, it connects directly to a DTE using a stan-
dard straight-through V.35 cable.
However, in many applications, the OnSite device’s V.35 interface will connect to a DCE (modem or multi-
plexer), in this situation use the special cable provided with your Model 2635. This DB-25/M35 cable presents
the 2635’s V.35 interface as a DTE for direct connection to a DCE (see
figure 11
).
