I have recevied this call usually about 3 time a week for the past two months and there is no one on the other end. Everytime I dial it back there is always a busy signal. I use to be with Vonage but this problem didn't start until after I switched to our local phone company service.

Have had this number call 3 times, no one ever answers, I've tried waiting as much as a minute.

This is a Vonage gateway, it doesn't dial in to anyone.  It will show up on the caller id from anyone who may be using Vonage VOIP for their telephone service.

someone called me from this number asking for someone from pakistan. Very strange?