How to Play black ops 1, 2 player online, without using a guest account.

when playing 2 player or split screen you will not be able to talk because there are restrictions on blacks ops 2 the only way to be able to talk is to change the other player from a guest into a actual xbox live gold account

is it another gamertag or is it just labeled guest? If so that is just the guest option.

The guest option is for a friend of yours to sign in if you are playing 2 player on xbox live and only one of you has a gold account. That way you can play multiplayer games like Black Ops and Halo 3 with your buddy, they will just show up as your gamertag
with an extra number after it.

Example

Totenkopf69(1)

www.co-optimus.com/.../call-of-duty-black-ops-3.html

In Black Ops 3, you can play all modes of play: Multiplayer and Zombies, in both local and online split-screen. Both Multiplayer and Zombies support 4-player local split-screen, and 2-player split-screen online. Team up through the entire campaign, built
from the ground up around four player co-op play.

Select play local and then press the Xbox button on your second controller. It'll ask you who is using this profile, but you want to select New user. You'll see the guest option there. After that, just press a button and your buddy will be in as a guest

Guest accounts don't have black ops player cards.

Some games such as MW3 uses a guest account which lets a second person play as a guest is the first player have a gold account.

If your questions mean can 2 players on a single console play a match online but with no other online players, you would have to use a private match option that some games use.