Robustel M1000 User Guide Manual do Utilizador descarregar pdf (Página 83)

Robustel GoRugged M1000 User Guide

RT_UG_M1000 _v.2.0.0 20.12.2013 82 / 83

Confidential

5.5.4 Receiving “No Carrier” Message

If the modem returns a “No Carrier” message upon an attempted call (voice or data), then refer to the table below

for possible causes and solutions.

If the modem returns…

Then ask…

Action…

“No Carrier”

Is the received signal strong enough?

Refer to section 5.2.7 Networks -> Values

of received signal strength (RSSI)

Is the modem registered on the

network?

Refer to section 5.2.7 Networks ->

Registration

Is the antenna properly connected?

Refer to section 2.5 Connect the External

Antenna (SMA Type).

“No Carrier” (when trying to

issue a voice communication)

Is the semicolon (;) entered

immediately after the phone number

in the AT command?

Ensure that the semicolon (;) is entered

immediately after the phone number in the

AT command.

e.g. ATD123456;

“No Carrier” (when trying to

issue a data communication)

Is the SIM card configured for data /

fax calls?

Configure the SIM card for data / fax calls

(Ask your network provider if necessary).

Is the selected bearer type supported

by the called party?

Ensure that the selected bearer type is

supported by the called party.

Is the selected bearer type supported

by the network?

Ensure that the selected bearer type is

supported by the network.

If no success, try bearer select type by AT

command: AT+CBST=0,0,3

5.7 Terms and Abbreviations

Abbreviations

Description

Alternating Current

APN

Access Point Name of GPRS Service Provider Network

Conformité Européene (European Conformity)

CHAP

Challenge Handshake Authentication Protocol

CSD

Circuit Switched Data

CTS

Clear to Send

Decibel

dBi

Decibel Relative to an Isotropic radiator

Direct Current

DCD

Data Carrier Detect

DCE

Data Communication Equipment (typically modems)

DCS 1800

Digital Cellular System, also referred to as PCN

Digital Input

1 2 ... 78 79 80 81 82 83 84 85

Comentários a estes Manuais

Sem comentários

Robustel M1000 User Guide Manual do Utilizador Página 83

Comentários a estes Manuais

Manuais e produtos relacionados com Routers Robustel M1000 User Guide