Your suggestion would certianly address the problem I noted.  However, there are other considerations.  For example, in many cases, I can resolve the problem/issue based on the voice mail.  Also, I can prioritize which calls to return first (i.e., major crisis vs. a general question) if I get more information from the voice mail.   

I agree with the comment about caller id being inaccurate.  That just happened to me today.  I returned the call and didn't know who to ask for.  Unfortunately, it was too late when I realized that the number in the caller id went to a main switchboard.

A callback number is nice, but the entire callback feature doesn't seem necessary.  I see the missed call or I listen to a voicemail.

If they want me to call them back, they can leave a voicemail.  I know that sometimes it is more likely to ask for a callback than to leave a voicemail, but that is what the missed calls address for me.

I agree, I have callbacks all the time but when I return the callback it is a switchboard and I have no idea who to ask for.

I agree, I frequently get a switchboard on callbacks and have to play a guessing game with the operator. 

I prefer disabling the callback option.

I agree please disable the callback option.  it is unnecessary for our business.