LTE Modem : Current Band, Cell tower and Non-cached signal quality Information

LTE Modem : Current Band, Cell tower and Non-cached signal quality Information

In Nodegrid, if one needs to run 4G and 5G LTE modem speed tests, mmcli command can be used with different parameters.

One needs to use modem specific commands to retrieve the following information,
1) The current band the modem is connected to during the speed test
2) The cell tower the modem is connected to
3) Non-cached signal quality 

For EM9191, one can use:  mmcli -m <number> --command=\!GSTATUS?

Example of output (note the information in bold):
response: '!GSTATUS: 
Current Time:  6039             Temperature: 38
Reset Counter: 5                Mode:        ONLINE
System mode:   LTE              PS state:    Attached
LTE band:      B66              LTE bw:      20 MHz
LTE Rx chan:   0                LTE Tx chan: 132322
EMM state:     Registered       Normal Service
RRC state:     RRC Idle
IMS reg state: No Srv

PCC RxM RSSI:  -71              PCC RxM RSRP:  -104
PCC RxD RSSI -74              PCC RxD RSRP:  -106
Tx Power:      --               TAC:         417a (16762)
RSRQ (dB):     -12.1            Cell ID:     01446a03 (21260803)
SINR (dB):      2.6'

Note: ModemManager has its own interval for refreshing the signal calculation, that's why it shows cached most of the time

    • Related Articles

    • Modem Troubleshooting

      Modem Troubleshooting  List connected modems mmcli -L Found 1 modems:        /org/freedesktop/ModemManager1/Modem/0 [Sierra Wireless, Incorporated] EM7565 List Modem connection details mmcli –m 0 /org/freedesktop/ModemManager1/Modem/0 (device id ...
    • Installing Firmware for LTE Modem

      Installing Firmware for the LTE Modem (Sierra EM7565). The modem installed in our Nodegrid SR product line is the Sierra EM7565 modem.   The link to download the firmware is provided below: ...
    • How antennas should be connected to M.2 modems installed in an NSR

      To prevent interference, the antenna connectors for each channel are split onto opposite sides of the module. This may cause confusion as it is a reasonable assumption that the connectors are associated with the LEDS below. It is critical that the ...
    • PPP DialUp connection in NodeGrid Serial Console

      NodeGrid Serial Console supports DialUp via USB modems. It does not support via serial ports.   You can plug any USB modem such as Zoom or USRobotics  to any of the NodeGrid Serial Console USB ports. Then, follow the steps below: a.       Log in as ...
    • Modem firmware files and upgrade process

      As of June 01, 2020, all units shipped by ZPE should have the following firmware versions installed in each modem: SWI9X50C_01.07.02.00_ATT_002.008_004 SWI9X50C_01.08.04.00_GENERIC_002.012_001 SWI9X50C_01.08.04.00_VERIZON_002.015_002 Upgrading ...