Abstract: A system includes the ability to establish a communication session between stations using protocol capabilities of an external transcoder. The stations may establish a communication session by exchanging protocol capabilities which include a protocol capability of at least one remotely located transcoder. The communication session may then be established using appropriate signalling protocol, including peer-to-peer signalling protocols.

Abstract: A method and system for determining a relative location of a device on a network is provided. In this system and method, a list of landmark nodes provided on the network is received. Then, a value which is a time, a latency and/or a distance from the device to each of the landmark nodes is determined. Each of the determined values corresponding to the respective node of the landmark nodes is transmitted to a central arrangement to provide the relative location of the device with respect to the landmark nodes.

Abstract: A compact form of torch which can resemble a lipstick in size and shape so that it can be carried in a handbag comprises a base rotatably supporting a sleeve to move torch between a retracted non-working position and a projecting position. A battery holder is axially movable by engagement of pins projecting from the holder into spiral grooves in the sleeve. A bulb holder is resiliently urged away from the battery holder and constrained to move axially corresponding to the movement of the battery holder except that the bulb holder reaches a stop position just before the battery holder reaches the projecting position so that slight further axial movement of the battery holder causes contact between the lamp carried by the lamp carrier and a battery carried by the battery holder to energize the lamp in the projecting position of the torch.