Datasheet

Installing 2T16S Network Processor Modules in the Cisco 4000 Series

78-3277-03

High-Speed Cable Overview

The router-end of the high-speed serial cable is a 60-pin D-sub connector, and the network end reflects

the interface type and mode (see Figure 11 and Figure 12 for examples). The high-speed port supports

the following DTE cables: CAB-232MT=, CAB-449MT=, CAB-V35MT=, CAB-X21MT=, or

CAB-530MT=; the port supports the following DCE cables: CAB-232FC=, CAB-449FC=,

CAB-V35FC=, or CAB-X21FC=.

Figure 11 High-Speed Serial Cable—EIA/TIA-232 DTE

Figure 12 High-Speed Serial Cable—EIA/TIA-232 DCE

This remainder of this section describes the network-end connectors.

EIA/TIA-232 Connections

EIA/TIA-232, the most common interface standard in the United States, supports unbalanced circuits at

signal speeds up to 64 kbps. The network end of the adapter cable is a standard 25-pin D-shell connector

(known as a DB-25, as shown in Figure 13). The router console and auxiliary ports also use

EIA/TIA-232 connections; however, the serial module ports support synchronous connections, and the

console and auxiliary ports support asynchronous connections.

Figure 13 EIA/TIA-232 Adapter Cable Connectors, Network End

EIA/TIA-449 Connections

EIA/TIA-449, which supports balanced (EIA/TIA-422) and unbalanced (EIA/TIA-423) transmissions,

is a faster (up to 2 Mbps) version of EIA/TIA-232 that provides more functions and supports

transmissions over greater distances. The EIA/TIA-449 standard was intended to replace EIA/TIA-232,

but it was not widely adopted primarily because of the large installed base of DB-25 hardware. The

increased size of the EIA/TIA-449 connectors also reduced the number of connections possible in a

given surface area compared to the smaller EIA/TIA-232 connector.

The network end of the EIA/TIA-449 adapter cable provides a standard 37-pin D-shell connector, as

shown in Figure 14. EIA/TIA-449 cables are available as either DTE (DB-37 plug) or DCE (DB-37

receptacle).

H5670

H5669

H1343a

DTE

DCE