So I have a client with a strange request.

Calls come in. Their phones ring. After 5 rings the caller hears a message "sorry we are busy please hold for the next rep" and then they are placed on hold and can hear the hold music via the BGM. Now... this is easy to do, i could just transfer them to a call distribution group after the tva-50's menu plays.. but the client doesnt want his extensions to ring again... he just wants the line to blink, as if a call is coming in (basically callers are put on hold waiting for someone to pick them up)... its strange and i thikn he'll get confused as to whos on hold after calling in, and who was just placed on hold by someone else... but its what he wants..

any ideas, without using a messaging card (we'll have a tda-50 and a tva-50)