Abstract: Narrowband subscriber terminals (40,52,58) of different narrowband networks are interconnected via a broadband network (48) that supports dissimilar signaling protocols to those maintained on the respective narrowband networks (40,52,58). A call server in a first narrowband network (40), in response to a call (100) from a first subscriber terminal (12) to a second subscriber terminal (68) in a second but different narrowband network (52), selects a phantom trunk (202) between the two networks. The phantom trunk has a unique circuit identity, which circuit identify is used in a first instance to relay to the second network an address of the second subscriber terminal (68). Then, in a second instance, the unique circuit identify is used to relay to the second network an address of the first subscriber terminal (68).

Abstract: A method, a data processing system and an article of manufacture for managing geographic identifiers stored in a database is described herein. The geographic identifiers each identify a respective geographic feature displayed on a surface map space partitioned by a mosaic of non-rectilinear shaped cells. The data processing system includes an accessing module for accessing a geographic look-up table and an index for the geographic look-up table, the geographic look-up table and the index being stored in the database, an identification module for identifying, from the index, stored row identifiers associated with a subset of the mosaic of non-rectilinear shaped cells, and a retrieving module for retrieving, from the geographic look-up table, stored geographic identifiers associated with the identified stored row identifiers.

Abstract: A method, a data processing system and an article of manufacture for managing geographic identifiers stored in a database is described herein. The geographic identifiers each identify a respective geographic feature displayed on a surface map space partitioned by a mosaic of non-rectilinear shaped cells. The data processing system includes an accessing module for accessing a geographic look-up table and an index for the geographic look-up table, the geographic look-up table and the index being stored in the database, an identification module for identifying, from the index, stored row identifiers associated with a subset of the mosaic of non-rectilinear shaped cells, and a retrieving module for retrieving, from the geographic look-up table, stored geographic identifiers associated with the identified stored row identifiers.

Abstract: Narrowband subscriber terminals (40,52,58) of different narrowband networks are interconnected via a broadband network (48) that supports dissimilar signalling protocols to those maintained on the respective narrowband networks (40,52,58). A call server in a first narrowband network (40), in response to a call (100) from a first subscriber terminal (12) to a second subscriber terminal (68) in a second but different narrowband network (52), selects a phantom trunk (202) between the two networks. The phantom trunk has a unique circuit identity, which circuit identify is used in a first instance to relay to the second network an address of the second subscriber terminal (68). Then, in a second instance, the unique circuit identify is used to relay to the second network an address of the first subscriber terminal (68).

Abstract: Narrowband subscriber terminals (40,52,58) of different narrowband networks are interconnected via a broadband network (48) that supports dissimilar signalling protocols to those maintained on the respective narrowband networks (40,52,58). A call server in a first narrowband network (40), in response to a call (100) from a first subscriber terminal (12) to a second subscriber terminal (68) in a second but different narrowband network (52), selects a phantom trunk (202) between the two networks. The phantom trunk has a unique circuit identity, which circuit identify is used in a first instance to relay to the second network an address of the second subscriber terminal (68). Then, in a second instance, the unique circuit identify is used to relay to the second network an address of the first subscriber terminal (68).

Abstract: A telecommunications system incorporates a switch based private network having a transparent network signalling system and having a plurality of nodes interfacing each via a switch with an intelligent public network. The public network incorporates a service control point having associated therewith a database containing destination addresses corresponding to call numbers received from the private network. The database provides routing data for call independent signalling information in response to requests from a node on behalf of a private service provided to a user of that node and from a public network switch on behalf of a private service provided to a directly connected user of that switch.