If the music is interrupted by anything, then that needs to be:
brief and preferably informative. Queue position is useful; how valuable my call is is not.
infrequent. I don’t need to know my queue position that often, and I don’t need to know how important my call is ever.
clearly not someone picking up my call. Fade the audio out nicely and then immediately start the voice part with no silence, so I don’t start listening to see if the talking is a call handler. Ideally, just do this at the end of the song. See above.
Most hold systems play a short piece of music where everything outside of 300-3000Hz has been obliterated so it sounds like absolute ass, interrupt it every 30s or so to play the same pointless speech clip, and initiate that clip with some silence and clicks that sound like someone picking up a phone.
Music that hasn’t been compressed to hell and back.
If the music is interrupted by anything, then that needs to be:
Most hold systems play a short piece of music where everything outside of 300-3000Hz has been obliterated so it sounds like absolute ass, interrupt it every 30s or so to play the same pointless speech clip, and initiate that clip with some silence and clicks that sound like someone picking up a phone.