Cross-talk

This is a technical term in communication (especially telephonic) where a conversation of a call is heard in another entirely different call.

Now consider one interesting real life situation. A group is going for a trip in holidays in a vehicle. Lets say it is the year end. In your journey you are likely to travel through the region where the cellular network is absent. Your dear ones are eager to call you to wish a happy new year. You too are eager to make many calls.

Once the vehicle reached the area where there is network coverage, the flood of messages starts pouring in. And everybody starts making calls despite the conversations interefering each other.
Now, how do you get rid of such 'cross-talk'?
:)