Next, the player to the left of the previous "caller" makes his "call".

This actually relates to the point that the previous caller was making.

Much of the programming is built around telephone calls whereby the caller usually asks the same question that the previous caller asked.

The previous caller had clearly been young and extremely confused.

You'll be connected to your previous caller, even if the number is busy.

Do we recognize the voice as a previous caller?

More than likely it was the previous caller trying again.

Usually begins each call by giving "all credit" to a point raised by a previous caller.

In turn the beacon plays back any important news left by previous callers.

Mr. Limbaugh claims the term originated with a caller who said "ditto what the previous caller said."