User's Manual

9
NOTE regarding installation where a personal firewall is in use:
The Application software communicates with the modem via UDP when connected in a dial up session.
The application software uses self addressing IP address 1.1.1.1 when checking for incoming voice calls,
SMS and any change of state. We have discovered that when using personal firewalls, these UDP packets
are blocked and voice, SMS and other notifications are not received by the Application Software. It is
recommended when using a personal firewall on your laptop or PC that you add IP address
1.1.1.1.3333 to the friendly list.
Maxon MaxCard+ Modem LED operation