CA2081169A1 - Telecommunication switching system having adaptive routing switching nodes - Google Patents

Telecommunication switching system having adaptive routing switching nodes

Info

Publication number
CA2081169A1
CA2081169A1 CA2081169A CA2081169A CA2081169A1 CA 2081169 A1 CA2081169 A1 CA 2081169A1 CA 2081169 A CA2081169 A CA 2081169A CA 2081169 A CA2081169 A CA 2081169A CA 2081169 A1 CA2081169 A1 CA 2081169A1
Authority
CA
Canada
Prior art keywords
switching
switching node
hierarchy
node
nodes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2081169A
Other languages
French (fr)
Other versions
CA2081169C (en
Inventor
Bruce Merrill Bales
Robert Louis Crumpley
Sandra Sue North
Stephen Max Thieler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2081169A1 publication Critical patent/CA2081169A1/en
Application granted granted Critical
Publication of CA2081169C publication Critical patent/CA2081169C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0062—Provisions for network management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/64—Distributing or queueing
    • H04Q3/66—Traffic distributors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13097—Numbering, addressing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13107—Control equipment for a part of the connection, distributed control, co-processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13138—Least cost routing, LCR
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13141—Hunting for free outlet, circuit or channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13176—Common channel signaling, CCS7
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13352—Self-routing networks, real-time routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13353—Routing table, map memory
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1338—Inter-exchange connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13383—Hierarchy of switches, main and subexchange, e.g. satellite exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13541—Indexing scheme relating to selecting arrangements in general and for multiplex systems routing

Abstract

A telecommunication switching system having switching nodes that perform adaptive routing by utilizing the fact that the switching nodes are arranged in a first and a second hierarchy. In addition, each switching node maintains routing information based on telephone and switching node numbers which identify the switching nodes. A destination switching node transfers its routing information back to an originating switching node which combines that routing information with its own in order to determine shorter call paths for subsequent call routing. The first hierarchy is a dialing plan hierarchy having groups of switching nodes at each dialing plan level. The second hierarchy is a switching node hierarchy based on the switching node number of each switching node with at least one switching node ofthe switching node hierarchy being at a different level in the dialing plan hierarchy.
In order to route a call, a switching node first routes through levels of switching nodes in the dialing plan hierarchy until a second switching node is encounteredwhich can determine the identification of the destination switching node based on a dialed telephone number. The second switching node then routes the call through the node hierarchy using the identified node number until a path is determined to the destination switching node.
CA002081169A 1991-12-30 1992-10-22 Telecommunication switching system having adaptive routing switching nodes Expired - Fee Related CA2081169C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US816,362 1991-12-30
US07/816,362 US5377262A (en) 1991-12-30 1991-12-30 Telecommunication switching system having adaptive routing switching nodes

Publications (2)

Publication Number Publication Date
CA2081169A1 true CA2081169A1 (en) 1993-07-01
CA2081169C CA2081169C (en) 1997-04-22

Family

ID=25220397

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002081169A Expired - Fee Related CA2081169C (en) 1991-12-30 1992-10-22 Telecommunication switching system having adaptive routing switching nodes

Country Status (6)

Country Link
US (1) US5377262A (en)
EP (1) EP0556515B1 (en)
JP (1) JPH0685907A (en)
CA (1) CA2081169C (en)
DE (1) DE69232658T2 (en)
ES (1) ES2174827T3 (en)

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US5838769A (en) * 1996-12-31 1998-11-17 Mci Communications Corporation Method of reducing risk that calls are blocked by egress switch or trunk failures
US6208717B1 (en) 1997-03-03 2001-03-27 Unisys Corporation Method for migrating or altering a messaging system
DE19743361C2 (en) 1997-09-30 2001-02-01 Siemens Ag Routing search method in telecommunications networks
EP0917386A1 (en) * 1997-11-17 1999-05-19 Siemens Aktiengesellschaft Method and switching process for control of connections
US6148073A (en) * 1997-12-17 2000-11-14 Northern Telecom Limited Network centric call processing architecture using distributed call segments
US6208640B1 (en) 1998-02-27 2001-03-27 David Spell Predictive bandwidth allocation method and apparatus
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Also Published As

Publication number Publication date
US5377262A (en) 1994-12-27
JPH0685907A (en) 1994-03-25
EP0556515A2 (en) 1993-08-25
DE69232658T2 (en) 2002-12-05
EP0556515A3 (en) 1994-12-07
CA2081169C (en) 1997-04-22
DE69232658D1 (en) 2002-08-01
ES2174827T3 (en) 2002-11-16
EP0556515B1 (en) 2002-06-26

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