Wavecom WMOD2B Manuel d'utilisateur télécharger pdf (Page 18)

B) Additional hints

❏ Is the antenna properly connected?

Use an antenna with the following features:

➫ Frequency range : dual-band GSM 900/1800 MHz.

➫ Impedance : 50 Ohms.

➫ Gain (antenna + cable) : 0dBi.

➫ VSWR (antenna + cable) : -10dB.

❏ Is the received signal strong enough?

➫ With the AT-Command AT+CSQ check that the received signal (1

parameter of the response) is strong

enough to be able to establish a call.

* based on general observations.

❏ The modem always returns «No carrier» when trying to issue a voice communication?

➫ Insure the character «semicolon» is present straight after the phone number on the AT-Command

ATD######;

❏ The modem always returns «No carrier» when trying to issue a data communication?

➫ Insure the selected bearer type is supported by the called party.

➫ Then, insure the selected bearer type is supported by the Network.

➫ If no success, try bearer selection type: AT+CBST=0,0,3.

➫ Insure the SIM Card is available for Data/Fax calls.

5.4 Further questions

For further troubleshooting information, please check our Frequently Asked Questions on www.wavecom.com (customer

support section).

TROUBLESHOOTING

Wavecom WMOD2B Modem 15

esnopserQSC+TA

)ISSR(

ytilauqlangiS

13ot11

→

*tneiciffusebdluohS

01ot0

99+dna

→

*tneiciffusniebdluoC

1 2 ... 13 14 15 16 17 18 19 20 21 22 23

Pas de commentaire

Wavecom WMOD2B Manuel d'utilisateur Page 18