5-12
Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 5 Connecting Serial Network Modules
4-, 8-, and 16-Port Asynchronous/Synchronous Serial Network Modules
Figure 5-10 16-Port Asynchronous Network Module LEDs
Figure 5-11 32-Port Asynchronous Network Module LEDs
4-, 8-, and 16-Port Asynchronous/Synchronous Serial
Network Modules
This section provides information about the following network modules for Cisco modular routers:
•
4-port asynchronous/synchronous serial network module (NM-4A/S) (see
Figure 5-12
).
•
8-port asynchronous/synchronous serial network module (NM-8A/S) (see
Figure 5-13
).
•
16-port asynchronous/synchronous serial network module (NM-16A/S) (see
Figure 5-14
).
Note
The Cisco NM-16A/S network module uses a Cisco patented 12-in-1 Smart Serial cable.
With the appropriate serial transition cable, the ports on these modules can provide an EIA/TIA-232,
EIA/TIA-449, V.35, X.21, EIA/TIA-530 DTE, or NRZ/NRZI serial interface. The NM-16 A/S network
module can provide an EIA/TIA-530A DTE interface.
Caution
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the 8-port A/S serial network modules (NM-8A/S) and 16-port A/S serial network modules
(NM-16A/S) only to intrabuilding or nonexposed wiring or cabling. The intrabuilding cable must be
shielded and the shield must be grounded at both ends.
EN
ASYNC
ASYNC 8-15
H9994
Enable LED
ASYNC 0-7
15
14
13
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11
10
9
8
7
6
5
4
3
2
1
0
Status LEDs
Status LEDs
EN
ASYNC
ASYNC 8-15
H9995
Enable LED
ASYNC 0-7
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ASYNC 24-31
ASYNC 16-23
31
30
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28
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26
25
24
23
22
21
20
19
18
17
16
Status LEDs
Status LEDs
Status LEDs
Status LEDs