Sierra Wireless 555 User Manual

Installation Guide

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The Connection Status Area uses the icons shown below.

AirCard not detected (displayed in the left part of the Connection Status 

Area).

The Signal Strength indicator (displayed in the left part of the 

Connection Status Area) uses bars to show the intensity of the radio 

signal of the 

 network. The number of bars increases as signal 

strength increases to a maximum of five bars.

When the bars are dimmed and the antenna icon is crossed out, no 

connection is possible for one of these reasons:

No antenna is attached

You are outside the CDMA network coverage area

The signal strength is too weak

A network or account problem is preventing the AirCard from 
obtaining service

Indicates whether 1X high-speed is available in this area. 

The Roaming Status indicator shows whether you are roaming onto the 

network of a service provider other than your own.

When the indicator is off (gray), you are within the local coverage area 

of your service provider. When the indicator is on (solid black), you are 

in a “preferred” roaming area. When the indicator is blinking, you are 

within the coverage area of a CDMA network but not in a “preferred” 

roaming area.

Your coverage area and account charges depend upon your service 

provider and the type of account you have. There may be surcharges 

for roaming service that vary based on whether you are in a preferred or 

non-preferred roaming area. If there is no roaming agreement between 

your service provider and the local carrier, you may be unable to 

complete calls.

 device not detected (notebook PCs only; displayed in the right part 

of the Connection Status Area).

No WiFi coverage (notebook PCs only)

In WiFi coverage; not connected (notebook PCs only)

WiFi connected (notebook PCs only)

WiFi signal strength (notebook PCs only; displayed in the right part of 

the Connection Status Area)