The cellmodem plugin is a monitoring plugin for cellular modems. it reports provider and signal quality for gprs/umts(3g)/hsdpa(3.5g) modem cards. it works with (mostly) all cards which support an out-of-band channel for monitoring purposes.

the current features include:
* display the current network type (gprs/umts)
* display the current signal level
* configure the maximum signal level
* configure the low and critical signal level
* asking for pin if modem needs it
* quick visual feedback on modem and registration status via leds