The GSM SMS modem fails to process multiple outbound SMS. After a while, the GSM SMS modem stops to respond AT commands, hence a full server reboot is required to reset the attached GSM SMS modem.
- GFI FaxMaker
- Sierra Wireless Wavecom FastTrack Xtend FXT009
The out-of-date firmware contains a bug that was encountered when processing multiple outbound SMS at once.
Upgrade the out-of-date firmware of the attached GSM SMS modem.