munin plugin to log cell signal quality (rsrq, rsrp, rssi, sinr) from Huawei mobile modems (e.g. e3131 etc.) API.

PHP (with curl extension).

• set the modem IP ($huaweiModemUrl = line).
• install in munin (and remember to restart munin-node -HUP afterwards), wait for munin to regenerate png/htmls.
• have fun! (Use munin's Limit low/high for better visuality.)
• add optional cron entry to log CellID changes (adjust paths to your install location and frequency to your taste)

1 * * * * echo "`date  \%Y\%m\%d-\%H\%M` - `/var/www/html/huaweimodem/huaweiModemLogCellID.php`" >> /var/www/html/huaweimodem/log/huaweiModemLogCellID.log