Cisco 7120 Series User Manual page 21

Chapter 1 Overview
The Cisco 7140-8T WAN ports have one enabled (EN) LED and five status LEDs (each of the eight ports
has a set of status LEDs). After system initialization, the enabled LED goes on to indicate that all ports
have been enabled for operation. If the initialization fails for any reason, the enabled LED will not go
on. The LEDs are shown in
Figure 1-24 Cisco 7140-8T WAN Port LEDs
EN
5
EN
I
Table 1-8
LED Label
EN
TD
TC
RD
RC
Loopback/
Carrier
Detect
1. DTR = Data Terminal Ready.
2. DSR = Data Set Ready.
3. RTS = Request To Send.
4. CTS = Clear To Send.
5. DCD = Data Carrier Detect.
78-6341-03
Figure 1-24
LEDs
Cisco 7140-8T LED Descriptions
Color State
Green On
Green On
Green On
Green On
Green On
Green On
Green Flushing
Yellow On
Cisco 7100 Series VPN Router Installation and Configuration Guide
and described in Table 1-8.
Function
Indicates ports are ready.
DTE—Transmit data out.
DCE—Transmit data in.
DTE—Transmit clock in.
DCE—Transmit clock in (TxCE).
DTE—Receive data in.
DCE—Receive data out.
DTE—Receive clock in.
DCE—Receive clock out.
1 2
Indicates DTR , DSR , RTS
Indicates RTS, CTS, or DCD is sending and receiving data in
half-duplex mode.
Indicates local loop or internal loop active.
Cisco 7140 Series Overview
3 4 5
, CTS , or DCD is active.
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