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Cisco IAD2430 Series Integrated Access Devices Hardware Installation Guide
OL-4234-06
Chapter 3 Installing Cisco IAD2430 Series IADs
Connecting Cables
–
X.21
• DTE only with EIA/TIA -530 signaling
Note DTE ports require external clocking provided by a DCE device such as a CSU/DSU.
Cable
The type of cable you connect to the serial port automatically sets the port for DTE or DCE operation
and establishes the signaling standard.
Procedure
Use the procedure in this section to connect external equipment to the Cisco 2430 series IAD.
Step 1 Connect the appropriate serial interface cable between the WAN serial port and the serial port connector
(see
Figure 3-26).
Figure 3-26 Serial Port Connection
Step 2 Connect the external equipment (CSU/DSU or other serial device).
Connecting a T1/E1-WAN Port to the Network Demarcation Device
To connect the T1/E1 port to a network demarcation device, use the procedure in this section.
Warning
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network
voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some
LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.
Statement 1021
88966
WI
C
2T
C
O
N
N
S
E
R
IA
L
1
SE
R
I
A
L2
C
O
N
N
Serial transition cable
Cisco 12-in-1
CSU/DSU
Connector for: EIA/TIA-232
EIA/TIA-449
V.35
X.21
EIA-530
(shown)