Can't invite or join friends game in black ops 1

I really wish the two teams would work together. Black Ops had a far superior menu/party system. I can't even click on a friend and join the lobby within the game; with Black Ops I didn't have to wait for an invite from the XBL dashboard system.

Does MW3 not join you up with friends like Black Ops. That was an awesome feature when joining a friends game Black Ops would always team you up next game...unless your friends party was full. Treyarch are smart that way!

My son and his 2 friends are trying to play Minecraft together by joining the same world. My son is hosting on his android-device, and have sent a invitation to each of his friends.

We have tried the following:

Case 1: "Friend 1" gets the invite, and joins the game. "Friend 2" gets the invite, at tries to join the game, but gets a time-out.

Case 2: "Friend 2" gets the invite, and joins the game. "Friend 1" gets the invite, at tries to join the game, but gets a time-out.

Case 3: "Friend 1" creates a game, and "Friend 2" joins and can play. My son tries to join but gets a time-out.

The maximum player-limit is 10, and they are 3 players in total.

What can be the problem, when both of his friends can join individually to my sons game, but when they try to join the same game one of them gets a time-out?

Yes iv tried it by pressing the xbox button and clicking invite to game and the also when i am on multiplayer in zombies in black ops one or just in the normal multiplayer in black ops one and clicking ‘y’ to invite friend and its saying i have 0 friends

why can't I join a game from a friends invite? I friends cannot join from my invites, but we can all party up. I don't have elite and it was only affecting MW3.