RG500Q is not functional

I have an openwrt with RG500Q-EA on it, I flashed firmware R11A06 on it, but he works fine, but he can’t dial up, I looked at the openwrt kernel logs and it shows that he keeps dropping and reconnecting, and when I turn off the dialing program, it also drops and reconnects when I send an AT less than 3 times or for 3 to 10 seconds, how can I fix this?

Is the power supply to the modem adequate?

Yes I am using a 125V5A power supply!

If that’s 2A into a router, with that router supplying a portion of that current to the modem, then you may not have enough power at the modem.

I don’t think that’s likely. One of the prototypes had one of these

echo -e “ATI\r\n” > /dev/ttyUSB2 | cat /dev/ttyUSB2

Why so many ATI

Try instead:

echo "ATI" | socat - /dev/ttyUSB2,crnl

You should also drop the “\n” character from your AT commands. It’s not part of AT command syntax.

Unable to use this command and using the dial-up software module reboots, I am now trying to replace the module to verify that it is working

You may need to install socat.

Most modem spontaneous reset/reboot/hangup problems on getting a connection are caused by inadequate power supply.

Here signal levels are critical. The modem’s transmit power amplifier is a major current drain.