edge stps support voice, data and video services. among their key functions are optimizing traffic flow; providing advanced load sharing between network segments; managing multi-node congestion; translating addresses; filtering and screening packets; and protecting important information. they also provide on-the-fly translation between networks that employ different transports and signaling protocols. that translation capability enables, for example, services that were designed to run on ss7 to run on ip networks instead, and vice versa.