4000 Router Series Interface Module Guide

Figure 21 SIC-2FXS panel

Figure 22 SIC-2FXO panel

The status description for the LEDs of SIC-1FXS/SIC-1FXO and SIC-2FXS/SIC-2FXO is shown in the

following table:

Table 33 Description for the LEDs on SIC-1FXS/SIC-1FXO and SIC-2FXS/SIC-2FXO panels

LED Descri

tion

LINK

• OFF means the link is idle.

• ON means the link is being occupied for call connection.

ACT

• OFF means the link is idle.

• ON means the link is being occupied for communication.

Interface cables and the connection methods

For more information about FXS/FXO interface cables and the connection methods, see

"ADSL/BS/FXS/FXO/AM/FCM interface."

SIC-2FXS1FXO

Introduction

2-port analog subscriber circuit interface module and 1-port voice AT0 loop trunk interface module

(SIC-2FXS1FXO) serve to access and handle three channels of analog voice signals over data

communication networks. Two FXS interfaces and one FXO interface are available on a SIC-2FXS1FXO

module:

• FXS interfaces are analog subscriber line interfaces that provide ordinary analog telephone and

fax access and also can connect AT0 loop trunks of exchanges;

• FXO interfaces are loop trunk interfaces that provide access of common subscriber lines of

exchanges.

Interface attributes

Table 34 Interface attributes of the SIC-2FXS1FXO module

Attribute Description

Connector type RJ-11

Number of connectors

2 FXS interfaces

1 FXO interface