Method of establishing a connection, as well as exchanges and a

Details Method of establishing a connection, as well as exchanges and a Method of establishing a connection, as well as exchanges and a

1997-05-20

2000-07-18

Smith, Creighton

Telephonic communications

Special services

Service trigger

379221, 379220, H04M 342

Patent

active

060918098

ABSTRACT:
The invention concerns a method of establishing a connection, as well as exchanges and a service control unit to carry out the method of establishing a connection. A calling subscriber (A) requests a connection to a called subscriber who is assigned to a geographical area (LOC2), whose number range is shared by two or more subscriber access networks (LN21 to LN23) of different network operators (OP21 to OP23). To establish the requested connection, a connection request is routed to the subscriber access network (LN23) of the called subscriber (B) via one or several communications networks (LN1, TN2). As part of the connection request and in addition to a directory number (N) which determines the called subscriber (B) within the number range of the geographical area (LOC2), a separate operator code (KOP23) is also transmitted, which determines the network operator (OP23) of the subscriber access network (LN23) of the called subscriber (B). A subscriber access assigned to the called subscriber (B) is then determined by means of the directory number (N) and the operator code (KOP23).

REFERENCES:
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patent: 5051992 (1991-09-01), Taniguchi et al.
patent: 5181558 (1993-01-01), Medamana et al.
patent: 5375167 (1994-12-01), Bales et al.
patent: 5625681 (1997-04-01), Butler, II
patent: 5732131 (1998-03-01), Nimmagadda et al.
patent: 5764745 (1998-06-01), Chan et al.
patent: 5793857 (1998-08-01), Barnes et al.
"High level service description for number portability" by "Public Network Operators--Interest Group", Jun. 29, 1994.

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