Quectel RM502Q-AE Diagnose Random Connection Loss
Posted: Sat Mar 20, 2021 7:14 pm
Hello Everyone,
I have a RM502Q-AE in a USB sled and a GL-B1300 Flashed with Rooter from 3/16/2021.
The USB Sled is powered via the Router USB and AUX USB. The system works really great most of the time, but sometimes, rarely, the internet connection stops working. If I reboot the router it will usually start working again. It will also start working if I click the Reset USB 1 and Reset USB 2 buttons on the "admin/modem/misc" page.
I was wondering if there were any AT commands I could use to diagnose this when the internet connection stops working. Everything looks normal on the Rooter Modem Network Status page when this is happening.
Other info:
Modem : Quectel RM502Q-AE
Modem ID : 2c7c : 0800
Provider : T-Mobile
Comm Port : /dev/ttyUSB2
Protocol : MBIM
All of these AT commands executed while the connection is working:
ATI
Quectel
RM502Q-AE
Revision: RM502QAEAAR11A02M4G
AT+QNWPREFCFG="mode_pref"
+QNWPREFCFG: "mode_pref",AUTO
AT+CGDCONT?
+CGDCONT: 1,"IPV4V6","fast.t-mobile.com","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CGDCONT: 2,"IPV4V6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,1
+CGDCONT: 3,"IPV4V6","sos","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1,,,,,,,,,"",,,,1
+CGDCONT: 4,"IPV4V6","tmus","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CGDCONT: 5,"IPV4V6","h2g2","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
AT+CSQ
+CSQ: 30,99
AT+CEREG?
+CEREG: 0,1
AT+CGREG?
+CGREG: 0,0
AT+COPS?
+COPS: 0,2,"310260",13
AT+QENG="servingcell"
+QENG: "servingcell","NOCONN"
+QENG: "LTE","FDD",310,260,24F950B,321,1100,2,5,5,8158,-91,-18,-52,9,0,150,-
+QENG:"NR5G-NSA",310,260,65535,-32768,-32768,-32768
Thank you!
I have a RM502Q-AE in a USB sled and a GL-B1300 Flashed with Rooter from 3/16/2021.
The USB Sled is powered via the Router USB and AUX USB. The system works really great most of the time, but sometimes, rarely, the internet connection stops working. If I reboot the router it will usually start working again. It will also start working if I click the Reset USB 1 and Reset USB 2 buttons on the "admin/modem/misc" page.
I was wondering if there were any AT commands I could use to diagnose this when the internet connection stops working. Everything looks normal on the Rooter Modem Network Status page when this is happening.
Other info:
Modem : Quectel RM502Q-AE
Modem ID : 2c7c : 0800
Provider : T-Mobile
Comm Port : /dev/ttyUSB2
Protocol : MBIM
All of these AT commands executed while the connection is working:
ATI
Quectel
RM502Q-AE
Revision: RM502QAEAAR11A02M4G
AT+QNWPREFCFG="mode_pref"
+QNWPREFCFG: "mode_pref",AUTO
AT+CGDCONT?
+CGDCONT: 1,"IPV4V6","fast.t-mobile.com","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CGDCONT: 2,"IPV4V6","ims","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,1
+CGDCONT: 3,"IPV4V6","sos","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,1,,,,,,,,,"",,,,1
+CGDCONT: 4,"IPV4V6","tmus","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
+CGDCONT: 5,"IPV4V6","h2g2","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0,,,,,,,,,"",,,,0
AT+CSQ
+CSQ: 30,99
AT+CEREG?
+CEREG: 0,1
AT+CGREG?
+CGREG: 0,0
AT+COPS?
+COPS: 0,2,"310260",13
AT+QENG="servingcell"
+QENG: "servingcell","NOCONN"
+QENG: "LTE","FDD",310,260,24F950B,321,1100,2,5,5,8158,-91,-18,-52,9,0,150,-
+QENG:"NR5G-NSA",310,260,65535,-32768,-32768,-32768
Thank you!