we were both in the same Location Area. I don’t know were we in the same cell, but we were close to each other. The second MS did some calls, after a while I called him, couldn’t succeed (message: “Subscriber is unreachable..”). After the second try I could call him and it was OK. The place is urban area, very “busy” cells. It not happened only to me, we received many subscriber complaints, that was the reason I posted this issue. It’s strange! Most of cells in the area are not congested, paging load is around 59%. Is it related to paging or some other issues (in NSS for example)?