GSM Not working


#1

Hi,
im using Q2501. the initialization of GSM is fine. but, it loses GSM coverage when it goes to GSM shadow. wat’s the AT command to check the status of GSM registeration? i tried +CREG? but, once it’s registered, it’s not able to change status when coverage’s lost.
is there any adl command that can be used? the adl_simGetState() won’t help as it can say whether the sim is inserted or not.
Also, the +WIND: 8 message that indicates network is lost or the +WIND:0 message indicating sim removal in between the power up of the device does not pop-up on the hyperterminal.
It’s urgent. can someone help me out?

Regards,
S. Vanee


#2

Sonething’s wrong there!

AT+CREG? most certainly should give the current registration state; for example:

at+creg?
+CREG: 0,1     -- Registered, Home Network

OK
               -- Antenna disconnected here

+WIND: 8       -- Network Lost

at+creg?
+CREG: 0,2     -- Not registered, searching.

OK

You can enable unsolicited +CREG responses - then you’ll be advised whenever the registration state changes.

Have you enabled them?
They are disabled by default…


#3

hi,
how to enable unsolicited creg & wind?


#4

This is all in the AT Commands Interface Guide - you have to read it!

For use with an Open-AT application, be sure to read the section “Inner AT commands configuration” in the ADL User Guide


#5

My wavecom Q2501B was working well but suddenly it stops responding. Evev it doesn’t echos the typed character. even then it continuously sends the WIND:3 then WIND:0.
What could be the problem…
If anybody have any idea please do let me know.
Regards.