communicator use
On a Helpdesk, Comminicator's good if you want to check something with a colleague while on the phone to some-one else, or send some-one a quick note if you tnow they're expecting a call from a third party - but best of all it lets you know if there's likely to be any-one at the other end of the line before you call, and whether or not they're too busy to talk if you call back (or indeed, have given up and gone home.)