Connecting to server using T mobile network

[Vijay Baskar]

Hi,

I’ve a MultiConnect Conduit MTCDT H5 210L. I’ve done steps 1 through 4 in the http://www.multitech.net/developer/software/mlinux/getting-started-with-conduit-mlinux/ link. I’m able to putty into the gateway through serial connection using both usb device and ethernet. I was successfully uploading data to cloud.

New requirement is to connect to cloud using cellular network. I’ve a 3G T mobile mini SIM card, which is plugged in to the conduit. I’ve tried the procedure in step 5 of the above link and I set the APN to fast.t-mobile.com. Next I give the “pppd call gsm” and nothing happens. Finally, it throws the “ifconfig: ppp0: error fetching interface information: Device not found” error for the command “ifconfig ppp0”.

Is T mobile supported by conduit?

Thanks.

[Bryan Tran]

Hi Vijay,

ssh into your Conduit and issue the following commands:

killall pppd <–Kill pppd

microcom /dev/modem_at0 <–Talk directly to the radio

at+cpin? <–You should get ‘+CPIN:READY’, if not check your SIM to see if you have inserted it in correctly.

http://www.multitech.net/developer/products/conduit/installing-conduit-sim-card/

at+csq <–Query Signal Strength. The return will have two digits – first digit should be > 10

at+creg? <–Query to see if it is registering to home/roaming network. Should be (0,1)

at#sgact=1,1 <–You should get an IP address back, if not check with your SIM service provider to see if the account is enable..etc.

at#sgact=1,0 <–Hang up

ctrl+x <–To exit the microcom

http://www.multitech.com/manuals/s000574_1_0_2.pdf

Thanks,

BT

[Vijay Baskar]

Hi Bryan,

Just the document I was looking for! Seems like there was an issue with the signal strength. Moved the gateway to a new location and it does recognize and connect to the T mobile network. But even at the best location, the signal strength is still 8. I need to switch over to a different network.

Thanks.

[Vijay Baskar]

Hi Bryan,

Is there anyway to remove all user startup scripts and restore factory default OS?

Thanks.

[Bryan Tran]

Hi Vijay,

Try this – http://www.multitech.net/developer/products/conduit/resetting-the-device/

Thanks,

BT

[Vijay Baskar]

Hi Bryan,

I did see that link already. My device seems to be stuck up at boot. The status LED is always ON. Even if I keep holding the reset button, there is no response from the hardware. Any ideas?

Thanks.

[Bryan Tran]

See my answer through support ticket#5072640

[Pablo Vasquez]

Hi,

I’ve done all the steps. I know this SIM works because I’ve already used it with another gateway.

Current configuration in gsm_chat is:

# Set the APN for your provider here
# ----------------------------------
#OK 'AT+CGDCONT=1,"IP","proxy"'
#OK 'AT+CGDCONT=1,"IP","ISP.CINGULAR"'
#OK 'AT+CGDCONT=1,"IP","internet2.voicestream.com"'
OK 'AT+CGDCONT=1,"192.168.112.2","eseye.com"'
SAY "Dialing...\n"
#OK 'ATD*99#'
OK 'ATD*99***1#'
SAY "Waiting for CONNECT...\n"
TIMEOUT 120
CONNECT ''
SAY "Connected\n"

when executing the steps fro above I get

# killall pppd
killall: pppd: no process killed
# microcom /dev/modem_at0
at+cpin?
+CPIN: READY

OK
at+csq
+CSQ: 14,2

OK
at+creg?
+CREG: 0,3

OK
at#sgact=1,1
ERROR
at#sgact=1,0
OK

What does +CREG: 0,3 means?
Isn’t necessary to put the GPRSPIN somewhere?

Best regards.

• This reply was modified 6 years, 11 months ago by Pablo Vasquez.
• This reply was modified 6 years, 11 months ago by Pablo Vasquez.
• This reply was modified 6 years, 11 months ago by Pablo Vasquez.
• This reply was modified 6 years, 11 months ago by Pablo Vasquez.

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