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Chapter 5
Connecting Serial Network Modules
16- and 32-Port Asynchronous Serial Network Modules
This section provides information about the following network modules:
•
•
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
ASYNC
Figure 5-9
ASYNC
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
OL-2485-20
16-port asynchronous network module (NM-16A) (see
32-port asynchronous network module (NM-32A) (see
16-Port Asynchronous Network Module
ASYNC 8-15
15
11
14
10
13
9
12
8
32-Port Asynchronous Network Module
ASYNC 24-31
31
27
30
26
29
25
28
24
ASYNC 8-15
15
11
14
10
13
9
12
8
16- and 32-Port Asynchronous Serial Network Modules
Figure
Figure
ASYNC 0-7
7
3
6
2
5
1
4
0
68-pin connectors
ASYNC 16-23
23
19
22
18
21
17
20
16
ASYNC 0-7
7
3
6
2
5
1
4
0
68-pin connectors
Figure 5-10
and
Figure
5-11.)
Cisco Network Modules Hardware Installation Guide
5-8)
5-9)
EN
EN
5-11
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