Cisco 2520-RF - 2520 Router Spécifications télécharger pdf (Page 8)

1-4 Cisco Multiport Router Hardware Installation and Configuration Guide

Port Configuration

Port Conﬁguration

The asynchronous/synchronous ports are conﬁgured as either asynchronous or

synchronous. The default is a synchronous port conﬁguration.

Asynchronous/Synchronous Port Features

The low-speed asynchronous/synchronous ports connect terminals, printers, modems,

microcomputers, and remote LANs over asynchronous serial lines to an internetwork, or to

synchronous devices such as DSU/CSUs on the same ports. The asynchronous/

synchronous ports support data transmission rates of up to 115.2 kbps on the following

serial interfaces:

• EIA/TIA-232

• EIA/TIA-449

• EIA-530

• V.35

• X.21

Note EIA/TIA-232 and EIA/TIA-449 were known as recommended standards RS-232

and RS-449 before their acceptance as standards by the Electronic Industries Association

(EIA) and Telecommunications Industry Association (TIA).

The multiport serial routers support numerous protocols. The following are examples of

some of the low-speed synchronous and asynchronous protocols:

• Autobaud

• Bisync

• Frame Relay

• Half-duplex operation

• HDLC

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Cisco 2520-RF - 2520 Router Spécifications Page 8