SIGNALLING IN A TELECOMMUNICATIONS SYSTEM

摘要

A method of transmitting signalling information in a Public Land Mobile Network (PLMN) between a pair of peer application parts. An adaptation layer is interposed between the TCAP of an SS7 network and a TCP/IP part to allow signalling data to be transmitted to and from an application part via an IP based network. The Adaptation layer provides for translation between global titles or Destination Point Codes (DPCs), used as the basis for addressing in the SS7 network, and IP addresses/port numbers for use in the IP network. The adaptation layer also provides for formatting of messages suitable for processing by the TCP/IP layers, and also for formatting signalling information flowing in the reverse direction.