For use in a telecommunications network comprising a plurality of packet data
service nodes and a plurality of mobile stations, wherein each packet data service
node is capable of communicating with one or more mobile stations, there is disclosed
an apparatus and method for avoiding triangulation delay that is caused by sending
messages over a long network path. The apparatus comprises an interface between
the packet data service nodes. Information sent over the interface permits a first
packet data service node to send data packets of a message from a first mobile
station to a second mobile station directly from the first packet data server node
to a second packet data server node without accessing an Internet (IP) protocol
network. This avoids triangulation delay by decreasing the length of the network
path for the message.
