Cisco Cisco 1800 2800 3800 8-Port Async Sync EIA-232 Serial High-Speed WIC Informationshandbuch
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Transport for traditional protocols: Synchronous serial ports can be used to connect to existing equipment
using protocols such as IBM Systems Network Architecture (SNA), Synchronous Data Link Control (SDLC)
Protocol, Binary Synchronous Communications (Bisync) Protocol, and X.25 Protocol. Cisco IOS
®
Software
provides the capability to transport this traditional-protocol traffic through a TCP/IP network. This capability
eliminates the need for expensive leased lines to support this traffic. With up to eight synchronous serial
ports, these HWICs are well suited for low- and medium-density applications that provide transport for
traditional protocols. For higher densities of synchronous ports, please see the NM-16A/S 16-port
synchronous/asynchronous network module.
Asynchronous ports are typically used in the following solutions:
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Console servers and terminal servers: This solution allows Cisco ISRs to connect to the console or craft
ports of other networking equipment to provide access to the console or craft ports from anywhere in the
network. These modules are well suited for remote management of equipment in network installations.
Cisco IOS Software provides a comprehensive set of security features to help ensure that only authorized
personnel can access these ports.
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Dial access server: A Cisco ISR with asynchronous ports can connect to external modems to provide a dial
access server. This capability provides low-density dial-in access to the network. For a dial access server
solution with integrated modems, please see the 8-port and 16-port analog modem network modules.
Q. Can different ports on one module be used for different applications?
A. Yes.
Q. Which connectors and cabling are used with these serial HWICs?
A. The HWIC-4T and HWIC-4A/S use the same Cisco Smart Serial connectors and cabling that are used on the
WIC-2T and WIC-2A/S. The HWIC-8A/S-232, HWIC-8A, HWIC-16A, and SM-32A use a new high-density
connector and corresponding new cables.
On the HWIC-8A/S-232, each connector supports four asynchronous/synchronous ports. Table 1 lists the
available cables.
Table 1.
High-Density Synchronous/Asynchronous Cabling
Product Number
Cable Type
Length
Connector Type
CAB-HD4-232FC
4-port EIA-232 DCE
10 ft (3m)
Socket DB-25
CAB-HD4-232MT
4-port EIA-232 DTE
10 ft (3m)
Plug DB-25
The HWIC-8A/S and HWIC-16A/SM-32A connectors support eight asynchronous ports per connector. The
Cisco asynchronous cable has the high-density connector on one end and eight RJ-45 plugs on the other.
Connections to other equipment are made using RJ-45 to DB-25 adapters. Table 2 lists the available cables.
Table 2.
High-Density Asynchronous Cabling
Product Number
Cable Type
Length
Connector Type
CAB-HD8-ASYNC
8-port EIA-232
10 ft (3m)
RJ-45
CAB-HD8-KIT
8-port EIA-232 plus 8 CAB-25AS-
MMOD
MMOD
10 ft (3m)
Plug DB-25
CAB-25AS-MMOD
RJ-45 to DB-25 adapter
-
Plug DB-25
CAB-25AS-FDTE
RJ-45 to DB-25 adapter
-
Socket DB-25