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 Title: |
US5014266:
Circuit switching system for interconnecting logical links between packet switching networks
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bales, Bruce M.; Louisville, CO
Miller, Paul E.; Northglenn, CO
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| Assignee: |
AT&T Bell Laboratories, Murray Hill, NJ
other patents from AT&T CORP. (706518) (approx. 16,328)
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| Published / Filed: |
1991-05-07
/ 1990-06-26
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| Application Number: |
US1990000544083
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| IPC Code: |
Advanced:
H04Q 11/04;
Core:
more...
IPC-7:
H04M 11/00;
H04Q 11/04;
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| U.S. Class: |
Current:
370/354;
370/355;
370/522;
379/093.14;
Original:
370/060.1;
370/058.1;
370/060;
370/062;
370/068.1;
370/110.1;
379/094;
379/201;
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| Field of Search: |
370/053,58.1,58.2,58.3,60,60.1,62,68.1,85.1,85.9,85.11,94.1,110.1
379/093,94,201,90,212,215,219,220,221,258,268,272
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| Priority Number: |
| 1988-12-28 |
US1988000290930 |
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| Abstract: |
A circuit switching system for interconnecting end point systems, such as packet switches, compressed voice concentrators, or data multiplexers, by allowing multiple logical links on each logical channel. The circuit switching system is connected to the end point system by a number of communication facilities with each facility having a plurality of logical channels. For packet switches, the circuit switching system is responsive to a first request to establish a first logical link on a logical channel to a packet switch and is responsive to a second request for another logical link to that packet switch to establish a second logical link on the same logical channel. The circuit switching system is responsive to a third request for establishing a logical link to another packet switch on the same logical channel for denying this request and for negotiating another logical channel.
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| Attorney, Agent or Firm: |
Moran, John C. ;
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| Primary / Asst. Examiners: |
Olms, Douglas W.; Hsu, Alpus H.
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| INPADOC Legal Status: |
Show legal status actions
Family Legal Status Report
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| Parent Case: |
This application is a continuation of application Ser. No. 07/290,930 filed on 12/22/88, now abandoned.
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| Designated Country: |
AT BE CH DE FR GB IT LI NL SE
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| Family: |
Show 14 known family members
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First Claim:
Show all 17 claims |
We claim:
1. A circuit switching system interconnected to at least one of a plurality of types of end point systems by a plurality of communication facilities for establishing logical calls in logical channels in said plurality of communication facilities between at least one of said plurality of types of end point systems to communicate logical calls between at least one of said plurality of types of end point systems, comprising:
- means responsive to a first setup request from a first one of said one of said plurality of types of endpoint systems for a logical call to a second one of said one of said plurality of types of end point systems received via a first logical channel for connecting said first logical channel from said first one of said one of said plurality of types of endpoint systems to a second logical channel from said second one of said one of said plurality of types of endpoint systems with said logical call being communicated on said first and second logical channels;
- said connecting means further responsive to a second setup request from said first one of said one of said plurality of types of endpoint systems received via said first logical channel to said second end of said one of said plurality of types of end point systems for signaling said latter one of said one of said plurality of types of end point systems that communication is to be established for another logical call via said second logical channel from said second one of said one of said plurality of types of end point systems with said other logical call also being communicated on said first and second logical channels; and
- said connecting means further responsive to a third setup request received via said first logical channel from said first one of said one of said plurality of types of end point systems for a logical call to a third one of said one of said plurality of types of end point systems for denying said third setup request.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 60 U.S. patent(s) that reference this one
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| Foreign References: |
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| Other Abstract Info: |
DERABS G90-202920
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| Other References: |
Martin H. Weik, "Communications Standard Dictionary", p. 523, Van Nostrand Reinhold Company.
International Telegraph and Telephone Consultative Committee (CCITT), IXth Plenary Assembly, Melbourne, 1988, Document AP IX-123-E, Jun. 1988, pp. 10-178.
International Telegraph and Telephone Consultative Committee (CCITT), IXth Plenary Assembly, Melbourne, 1988, Document AP IX-124-E, Jun. 1988, pp. 1-86.
International Telegraph and Telephone Consultative Committee (CCITT), IXth Plenary Assembly, Melbourne, 1988, Document AP IX-125-E, Jun. 1988, pp. 1-79.
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