Just go to VLDI's website and they will get back to you within a day or two. BTW ask for a demo from one of their Mobile Labs first before you buy. Also ask for the free 3 months field trail. After all that you should be able to make a good decision if this is for you and do not count on any endorsements for all those that either field tested VP or beta tested it! It has been over a year now since the OEM Mobile Service Provider field tested VP and they never came on board. In March it will be over a year also for the OEM Mobile Solution Provider's field test as well. Just a few more things to consider before you buy.
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