Cisco 3600 Series - Page 70

4-Port and 8-Port Asynchronous/Synchronous Serial Network Module
Cisco Network Modules Hardware Installation Guide
6-18
Each port on an asynchronous/synchronous serial network module also has the additional
LEDs shown in Table 6-7.
Table 6-7 Asynchronous/Synchronous Serial Network Module LEDs
LED Meaning
CN/LP Connect when green, loopback when yellow
RXC Receive clock
RXD Receive activity
TXC Transmit clock
TXD Transmit activity
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