>Short call times is one of the most important measures in the telemarketing industry. Putting the phone down is one way, but as soon as they ask a question, they're on to you. Better idea...drag on the conversation as long as you can.

Yes, but unless you have a script or a nice punch line this takes your time as well. One other tactic of mine if I am not alone is to ask them to hold for a few seconds while I have to "clear the meeting" and then go on about talking about some design patterns or strange bugs. Sometimes I do inform the caller that it might take a few more moments<g>. If I am alone I often have to type something up first, then get my coffee, take care of the other phone and so on. Just making sure the person calling me is well rested before he hangs up the phone. If they have the decency to ask when it would be best for them to call me back I try my very best to give them times I am sure nobody will answer the phone - that way they are spared another round with me.