In order to change the dial plan, you must use telnet, loading a config file won't work. A manual for the gizmo can be found at
http://www.innomedia.com/manuals/SIP...nual_1.211.pdf
Login as admin via telnet to the gizmo. Then choose "Cd" to edit the dial plan. Start by deleting everything - you'll want be able to send pretty much anything to voxalot and use it to handle the real dialplan. My voxalot dialplan on the gizmo is:
VoIP_Digit_Map_String="(911|411|X.T|X.#|*X.T)"
While you're telneted in you'll want to change your NTP servers too.