Method for handing off a communications session

A method of handing off a communications session between a first device and a second device, to a third device. The method comprises: receiving information associated with a communications session between first and second devices, and storing it in a cache; storing a generated identifier of the session; sending a message comprising the identifier to the first device; receiving a request, comprising the identifier, from the first device to initiate handoff to a third device; outputting an address and the identifier, for delivery to the third device; receiving a connection request comprising the identifier from the third device; using the identifier to retrieve the information; sending at least one message to the third device comprising the information, a request to store the information on the third device, and a request to establish a further communications session with the second device; and serving the further session to the third device.