my personal opinion about this problem, that came to my attention on yahoo answers a few days ago is that MJ/Ymax is not paying interconnect fees, or termination fees to the company handling the call routing, so those companies have refused to terminate MJ calls to there subscribers, as it appears that people can call some local number (on certain carriers) but not othersIt now appears that the rural carriers are not the ones preventing these calls from completing, but rather Magicjack denying these calls the ability to be terminated.
i sense the end of magic jack coming soon...
Connected Planet has just published an article about the rural carriers filing a complaint, specifically naming Magicjack for not terminating calls to certain destinations with higher termination fees. The article can be read here: http://connectedplanetonline.com/independent/news/Rural-carrier-groups-ask-FCC-to-intervene-in-call-blocking-disputes-0616/
As an exhibit filed with a letter to the FCC from several rural carrier associations reveals, VoIP provider VocalTec, operator of the low-cost magicJack VoIP service, is simply refusing to complete calls to some carriers—and the evidence suggests that those incomplete calls are to rural carriers.