Nx-networks 3000 Manuel d'utilisateur Page 33

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3000 Series User Guide 19
To be sure that you are using the proper cable to connect your WAN module,
check the part number on the cable with the information in the following
table.
The following three figures show possible DTE/DCE connections.
This figure shows a DTE cable connection to a device with a DCE
connector.
To connect the standard WAN
module to . . .
Use cable
type . . .
Part Number
an external asynchronous modem. RS-232 DTE P4730-09
an external synchronous modem, a
modem eliminator, or a CSU/DSU.
(Whether you use RS-232, V.35, or X.21,
depends on which type of communication
the equipment you connect to supports.)
RS-232 DTE
V. 3 5 D T E
X.21 DTE
P4730-09
P4730-08
P4730-10
another router that has a DTE connector.
(In this case, you must set up the 3000
Series to provide clocking.)
(Whether you use RS-232, V.35, or X.21,
depends on which type of communication
the equipment you connect to supports.)
RS-232 DCE
V. 3 5 D C E
X.21 DCE
P4730-12
P4730-11
P4730-13
3000 Series
DTE Interface
Cable
DTE
DCE Connector
3000 Series
VO
I
C
E
OICE
V
1
V1
D
1
D1
D
2
D2
D
3
D3
E
T
H
ETH
V
2
V2
V
3
V3
V
4
V4
DATA
A
L
M
ALM
O
K
OK
P
W
R
PWR
In this configuration, the CSU/DSU or modem provides
clocking. You can use V.35, RS-232, or X.21 cabling.
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