Q2687 sometimes stops responding to cmds



I’ve noticed that sometimes the Q2687 stops responding to AT commands.

The application is still running, and churning out unsolicited notifications.

A hardware reset is necessary to break the impasse (I’ve not yet tried a watchdog + software reset).

What is the likely cause of this, and are there any countermeasures I can put into the Wavecom application?


Whats you application exactly doing?? Do you enter data mode anytime using your application??