4000 Router Series Interface Module Guide

Attribute Description

Services

Backup

Terminal access

ISDN

Interface LEDs

The following figure illustrates the SIC-1VT1 panel.

Figure 27 SIC-1VT1 panel

The following table describes the LEDs on the SIC-1VT1 panel.

Table 43 Description for SIC-1VT1 LED

LED Descri

tion

LINK/ACT

• ON means carrier signal has been received.

• Flashing means data is being transmitted or received.

• OFF means no carrier signal has been received.

LP/AL

• ON means the interface is in a loopback.

• Flashing means an AIS, LFA, or RAI alarm signal is present.

• OFF means neither loopback nor alarm is present.

Note:

AIS = Alarm indication signal; LFA = loss of frame alignment; RAI = Remote alarm indication

Interface cables and the connection methods

For more information about T1 interface cables and the connection methods, see "T1 interface."

WLAN interface module

• SIC-WLAN-b/g/n

• SIC-WLAN-b/g/n(NA)

SIC-WLAN-b/g/n/SIC-WLAN-b/g/n(NA)

Introduction

The SIC-WLAN-b/g/n module serves to receive and send 802.11b/g/n WIFI protocol data. Two

external antennas are available on the module, supporting 802.11b/g/n standard and working on the

2.4 G channel.

The SIC-WLAN-b/g/n (NA) modules are applicable only in North America, and the area code is fixed

at NA. The other specifications of the SIC-WLAN-b/g/n (NA) modules are the same as the

SIC-WLAN-b/g/n modules.