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Cisco Systems, Inc.
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High-Density Asynchronous Network Modules
Figure 6
High Density Asynchronous Network Module NM-32A
The NM-16A and NM-32A network modules provide flexible, high-density asynchronous connectivity at a
competitiveprice per portandhigher performancethancomparable third-party solutions.Themodules support V.34
speeds at up to 4x compression (134.4 kbps) over the asynchronous connection. Three examples where this module
can be deployed follow:
• Small to medium-sized power branch offices where remote users require modem dial access; a fully configured
Cisco 3745 chassis with four async network modules connected to the modem rack enables connectivity for up
to 128 dial-in users
• Mediumbranchoffices that require ahigh-densityterminalserver;a fully configured Cisco3745chassiswithfour
async network modules connected to the modem rack (with optional custom cables) enables connectivity for up
to 128 terminal connections
• Telemetry applications, connecting a NM-32A module to private branch exchange (PBX) serial ports, data
collection equipment, or router consoles
Cabling
The NM-16Aand NM-32A modules support two or four Cisco “octopus” cables. Eachcable terminates eightports,
with optional physical endpoints of RJ-45 or DB-25. A NM-16A module requires two cables, and the NM-32A
requires four cables. Table 4 shows the available cables and end connectors for use with the NM-16A and NM-32A.