If you are in the middle of a call and you’re taking the call on a desk phone but you need to go out, you can either key in a code onto your desk phone to switch onto your mobile seamlessly or you can use the Collaborate application on your mobile. At no point does the call need to go on hold and the person you’re speaking to won’t even realise the call has been handed from one device to the other. Both will seamlessly move the call from your deskphone to your mobile or tablet device, allowing you to move away from the office while still talking to your client without interruption.
It works the other way too so, if you’re coming into the office but you’d rather move the call to your desk phone from your mobile, you can do that as well.