Operation of TRIP

A TRIP Speaker(LS) establishes intra-domain and inter-domain “peering sessions” with other TRIP Speakers to exchange routing information. The peering sessions are established to exchange routes to telephony destinations. The peers update each other of new routes learned by them. Each peer may in-turn learn about new routes from other peers or through gateways registering telephony prefixes to them or through a static configuration on the Location Servers. The peers also “withdraw” the routes they advertised to the other peer on learning about the unavailability of the routes.TRIP peering sessions use TCP for transport