Do callers hear the same message every time they e on hold?
Not likely. The digital repeaters that broadcast the on hold audio recordings play the audio signal in a continuous loop. Callers placed on hold will be hearing whatever messages happen to be playing at that point in time. However once on hold they will hear the messages consecutively in the order they are recorded in the audio program. Generally, callers will hear a different part of the message program each time they are placed on hold. And all callers who are on hold will be hearing the same messages at the same time.