Pausing is not the best solution, as the other team can unpause the game if they feel so inclined (and often they do).
If you are playing 2v2 (or any team composition) without voice (either in-game voice, or a solution like ventrilo), the game is definitely more difficult. If you are friends with the person, it helps to establish a concrete opening strategy before the game, and then use small messages while you are macroing and once you see scouting information to decide how to progress into the mid and late games.
If you are doing team games with randoms, it helps to start trying to establish this as soon as the game gets started while you are still creating your first drones. You'll know right away if you are in it alone, or if you have a very cooperative partner based on how they respond.
Also, give control of your units! I can't tell you how helpful this is so that both of you can micro at the same time, or help the other player micro when you can't get off something to type to them quick enough.