Cisco 7100 Series Quick Start Manual page 9

Connect the Router to the Network
(continued)
Strain-relief screws
To CSU, DSU, or external
synchronous serial equipment
Connect the T1 Ports
(Cisco 7120-4T1 only)
The four T1 ports operate at T1
(1.544-Mbps) and E1 (2.048-Mbps) speeds
Each port uses an identical 60-pin D-shell
receptacle that supports the following
interface types:
• EIA/TIA-232
• V.35
• EIA/TIA-449
• X.21
• EIA-530
5
EN
I
Serial 1/0
1
Attach the appropriate serial cable
directly to the receptacle on the router
and tighten the strain-relief screws.
2
Attach the network end of the serial
cable to a DSU, CSU, DTE, or other
external synchronous serial equipment
and tighten the strain-relief screws.
7