GPRS NO CARRIER ERROR

IoT Modules Legacy HL Series
1

HI,

am trying to establish gprs connection
following these at commands …
AT&K3
AT+KCNXCFG=0,“GPRS”,“APN”,“log”,“password”,“0.0.0.0”,
“0.0.0.0”,“0.0.0.0”
AT+KTCPCFG=0,0,“www.google.com”,80
AT+KTCPSTART=1

after tcpstart am getting connect response but if send any data, it will respond with .NO CARRIER
.+KTCP_NOTIF: 1,4

i do not what is the problem can one please guide me to solve this issue

2

Hi,

As per the log, are you really testing with google.com?
And what data you are sending to the server?

google.com:80 is a web server and it only handle HTTP request.
If you are not sending expected data, the server will simply drop the TCP session and disconnect.

Please test with your own TCP server, if you want to make HTTP request, please refer to AT cmd guide section 22.6.

3

I am unable to send outgoing calls and receive any incoming calls.
It says NO CARRIER. please find the bellow at commands

IIII▒▒▒▒▒▒▒▒
at
OK
at
OK
atd
+CREG: 0
at+cpin?
ERROR
at+cpin?
+CPIN: READY
OK
atd+918801684684;
OK
NO CARRIER
at+creg?
+CREG: 1,0
OK

4

You are trying to set up a voice call - so this has nothing to do with the topic of this thread: “GPRS NO CARRIER ERROR”

Start a separate thread.