Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 116

4-, 8-, and 16-Port Asynchronous/Synchronous Serial Network Modules
Figure 5-15 4-Port Asynchronous/Synchronous Serial Network Module LEDs
SERIAL
A/S
3
Figure 5-16 8-Port Asynchronous/Synchronous Serial Network Module LEDs
SERIAL
A/S
7
3
All network modules have an enable (EN) LED. This LED indicates that the module has passed its
self-tests and is available to the router.
Each port on an asynchronous/synchronous serial network module also has the additional LEDs shown
in Table
Table 5-8
LED
CN/LP
RXC
RXD
TXC
TXD
Cisco Network Modules Hardware Installation Guide
5-14
CN/LP RXC RXD TXC TXD CN/LP RXC RXD TXC
2
Asynchronous/synchronous serial port LEDs
Asynchronous/synchronous serial port LEDs
CN/LP RXC RXD TXC TXD CN/LP RXC RXD
6
CN/LP RXC RXD TXC TXD CN/LP RXC RXD
2
Asynchronous/synchronous serial port LEDs
5-8.
4- and 8-Port Asynchronous/Synchronous Serial Network Module LEDs
Meaning
In connect mode when green, in loopback mode when yellow
Receive clock
Receive activity
Transmit clock
Transmit activity
TXD CN/LP RXC RXD TXC TXD
1
TXC TXD CN/LP RXC RXD TXC TXD
5
TXC TXD CN/LP RXC RXD TXC TXD
1
Chapter 5 Connecting Serial Network Modules
EN
CN/LP RXC RXD TXC TXD
0
Enable LED
CN/LP RXC RXD TXC TXD
4
CN/LP RXC RXD TXC TXD EN
0
Enable LED
OL-2485-20