Registration problems

Wireless & IoT
1

I have a GM862-QUAD telit modem. At first i was able to register with no problem. The other day it keeps me on CREG=0,3 (not able to register) . I reflash as i saw another post on this forum and it comes to live again. But today it becomes CREG=3 again. I reflash it again and nothing. When i insert the sim card it seems to register for a seconds and then fall down.

+CREG: 2

+CREG: 1

+CREG: 2

+CREG: 1

+CREG: 2

+CREG: 1

+CREG: 2

+CREG: 3

at+cops=?

+COPS: (2,“748 10”,“”,“74810”)

OK

74810 is my network but i cant register… Please, any ideas?

2

it seems to be a signal problem. When the connection try 6

times it give ups and then you can try to connect manually. So at this

momment the antenna signal seems to be stable at 8,0 or 7,0, enough to

connect. Then i try AT+cops=1,2,74810 manually and the antenna signal

drops down (99,99). Then when it gives up again the antenna get stable

again. I postu a txt of the console with the modem.

at+csq

+CSQ: 7,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 8,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 8,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 8,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 8,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 9,0

OK(*** AT+creg=0,3 … not trying to connect)

at+csq

+CSQ: 9,0

OK

at+csq

+CSQ: 9,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 7,0

OK

at+csq

+CSQ: 7,0

OK

at+csq

+CSQ: 7,0

OK

at+csq

+CSQ: 7,0

OK

at+csq

+CSQ: 7,0

OK

at+csq

+CSQ: 7,0

OK

at+csq

+CSQ: 7,0

at+cops=1,2,74810

OK

at+csq

+CSQ: 7,1 (*** AT+creg=0,2 … trying to connect)

OK

at+csq

+CSQ: 7,1 (*** AT+creg=0,2 … trying to connect)

OK

at+csq

+CSQ: 7,1 (*** AT+creg=0,2 … trying to connect)

OK

at+csq

+CSQ: 99,99 (*** AT+creg=0,2 … trying to connect)

OK

at+csq

+CSQ: 99,99 (*** AT+creg=0,2 … trying to connect)

OK

at+csq

+CSQ: 99,99 (*** AT+creg=0,2 … trying to connect)

OK

at+csq

+CSQ: 99,99 (*** AT+creg=0,2 … trying to connect)

OK

at+csq

+CSQ: 7,1 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 8,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 8,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+csq

+CSQ: 9,0 (*** AT+creg=0,3 … not trying to connect)

OK

at+creg

+CREG: 0,3

OK

at+cops=1,2,74810

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 99,99 (*** AT+creg=0,2 … trying to connect again)

OK

at+csq

+CSQ: 8,0

OK

at+csq

+CSQ: 8,0

OK

at+creg

+CREG: 0,3

3

That RSSI looks like crap :confused:

Are you able to do a AT#SERVINFO while its not fully registered?