3com MSR 20 Manual Do Utilizador

SIC-8AS

Connecting the Interface

Cable

CAUTION: When connecting the optical fiber, observe the following

■

Do not over-bend the optical fiber. Its curvature radius must be no less than 10
cm (3.9 in).

■

Ensure that the Tx and Rx ends are correctly connected.

■

Ensure that the fiber ends are clean.

WARNING: Laser danger: Invisible laser radiation may be emitted from the
fiber-optic ports which are connected to lasers. To protect your eyes against
radiation harm, never stare into an open fiber-optic port.

Step 1: Insert the SFP optical module into its corresponding slot.

Step 2: Locate the Rx and Tx ports of the SIC-1FEF interface. Connect them to
another device with two optical fibers: Rx to Tx and Tx to Rx.

Step 3: Power on the router and check the behavior of the LINK LED on the
SIC-1FEF panel. ON means an Rx link is present and OFF means the opposite. In
the latter case, check the line status.

SIC-8AS

Introduction

SIC-8AS, the 8-port asynchronous serial interface card, is mainly used to transceive
and process the asynchronous data streams.

SIC-8AS has these features:

■

Each asynchronous serial port provides a rate up to 115.2 Kbps.

■

Supports the terminal access service and asynchronous dedicated line.

■

Serves as the small-/medium-sized ISP dial-up access server when an
asynchronous serial port is used for dial-up.

Interface Attributes

The following table describes the interface attributes of SIC-8AS.

Table 35 Interface attributes of SIC-8AS

Attribute Description

Connector DB60

Number of connectors

Interface cable

Customized cable with 8-port RJ-45
connector

Interface standard

RS232

Minimum baud rate

300 bps

Maximum baud rate

115.2 Kbps