Specifications

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Cisco 7100 Series VPN Router Installation and Configuration Guide
78-6341-03
Chapter 1 Overview
Cisco 7120 Series Overview
Cisco 7120-T3
The Cisco 7120-T3 provides one high-speed, synchronous serial port that supports full-duplex operation
at T3 (45-Mbps) speeds. The Cisco 7120-T3 provides the following features:
• Integrated DSU functionality
• 16- and 32-bit CRCs
• B3ZS line coding
• Scrambling and bandwidth reduction
• Loopbacks
• ATM-DXI, Frame Relay, HDLC, SMDS, and PPP serial encapsulation
• RFC 1213 and RFC 1407
Figure 1-7 shows the back of the Cisco 7120-T3. Access to the interfaces is located at the back of the
router.
Figure 1-7 Cisco 7120-T3—Back View
SLOT 0 SLOT 1
XMTRRCVR
EN
RCLK FERF RL
AIS OOF LL
FE 0 / 0 FE AUX
7120 - T3
5
I
CONS
ACT
0 / 1
ACT
LNK
0
LNK
1
PWR
SYS
RDY
0
2
Console and
auxiliary ports
Fixed LAN ports
18486
Power supply
PC Card
slots (covered)
T3 WAN port
serial 1/0
LEDs
Modular port adapter
Service module
Fast Ethernet 0/0
Fast Ethernet 0/1
LED