Cisco 3825 Hardware Installation Guide - Page 113

Chapter 5 Connecting Serial Network Modules 16- and 32-Port Asynchronous Serial Network Modules 16- and 32-Port Asynchronous Serial Network Modules This section provides information about the following network modules: • 16-port asynchronous network module (NM-16A) (see Figure 5-8) • 32-port asynchronous network module (NM-32A) (see Figure 5-9) When used with corresponding octal cables, these modules provide 16 or 32 EIA/TIA-232 data terminal equipment (DTE) serial interfaces. Speeds up to 134.4 kbps are supported. Figure 5-8 16-Port Asynchronous Network Module ASYNC 15 11 14 10 13 9 12 8 ASYNC 8-15 7 3 6 2 5 1 4 0 ASYNC 0-7 EN H9996 68-pin connectors Figure 5-9 32-Port Asynchronous Network Module ASYNC 31 27 30 26 29 25 28 24 15 11 14 10 13 9 12 8 ASYNC 24-31 ASYNC 8-15 23 19 22 18 21 17 20 16 7 3 6 2 5 1 4 0 ASYNC 16-23 ASYNC 0-7 EN H9997 68-pin connectors Asynchronous Network Module LEDs 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 network module also has a green status LED to indicate that the port is connected to the network. These LEDs are grouped in blocks of eight to the left of each module and are labeled with the port numbers. (See Figure 5-10 and Figure 5-11.) OL-2485-20 Cisco Network Modules Hardware Installation Guide 5-11