NKOTB, same thing happens while calling my wifie, unattended and worst it is ringing on my side (as i hear it) but she didn't even get a missed call log...

it also happens that when i dial just the number without ICC (int'l. country code) i can reach here but when i'm changing it as int'l format i becomes unreachable...

don't know why? maybe it's on the tower nearest you receiving the calls... but weird i guess.

^_^