Cisco 7120 Series User Manual page 16

Cisco 7140 Series Overview
Cisco 7140-2E3
The Cisco 7140-2E3 provides two high-speed, synchronous serial ports that support full-duplex
operation at E3 (34-Mbps) speeds. The Cisco 7140-2E3 provides the following features:
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Figure 1-17
router.
Figure 1-17 Cisco 7140-2E3—Back View
5
I
EN
LED
E3 WAN port
Cisco 7100 Series VPN Router Installation and Configuration Guide
1-16
Integrated DSU functionality
16- and 32-bit CRCs
HDB3 line coding
Scrambling and bandwidth reduction
G.751 framing or bypass framing
National service bits
Loopbacks
ATM-DXI, Frame Relay, HDLC, SMDS, and PPP serial encapsulation
RFC 1213 and RFC 1407
shows the back of the Cisco 7140-2E3. Access to the interfaces is located at the back of the
Service module
RX TX RX TX
RCLK FERF RL RCLK FERF RL
AIS OOF LL AIS OOF LL
LEDs
Fixed LAN ports
E3 WAN port
Modular port adapter
SLOT 0 SLOT 1
ACT ACT
LNK LNK
0 1
FE 0 / 0 FE 0 / 1 CONS
Console and
auxiliary ports
PC Card
slots (covered)
Chapter 1
AC OK
DC OK
OTF
PWR
0
AC OK
SYS
RDY
DC OK
AUX
OTF
2
7140 - 2E3
Power supplies
Overview
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