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 Title: |
US5594727:
Telephone switch providing dynamic allocation of time division multiplex resources
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Kolbenson, Chuck; North Andover, MA
Nelson, Paul; Georgetown, MA
St. Hilaire, Kenneth; Hollis, NH
Tingley, Alan; Salem, NH
Tenuta, Gerry; Burlington, MA
Sandstrom, Peter; Sanbornton, NH
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| Assignee: |
Summa Four, Inc., Manchester, NH
other patents from SUMMA FOUR, INC. (550475) (approx. 3)
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| Published / Filed: |
1997-01-14
/ 1994-09-19
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| Application Number: |
US1994000308135
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| IPC Code: |
Advanced:
H04J 3/12;
H04J 3/16;
H04Q 11/04;
Core:
more...
IPC-7:
H04J 3/16;
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| ECLA Code: |
H04J3/12; H04J3/16A4; H04Q11/04;
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| U.S. Class: |
Current:
370/442;
370/468;
Original:
370/442;
370/468;
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| Field of Search: |
370/58.1,58.2,79,95.3,85.7,95.1
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| Priority Number: |
| 1994-09-19 |
US1994000308135 |
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| Abstract: |
A switch, which connects ports on a customer port module to ports on a network port module via time slots on a dime division multiplexing bus, determines for each connection a number of required time slots, based on the current switch configuration and/or the signal traffic at the associated port. The switch then determines if it has the required number of time slots available generally and if it can make the time slots available to the port. If so, the switch assigns the time slots to the port and completes the connection. The switch determines the number of time slots required by consulting a stored port type indicator table, which lists bandwidth demand based on port type, or by detecting in-band signaling information that indicates the bandwidth demand. If the table indicates that the switch includes non-blocking ports, the switch coordinates the number of time slots allocated to a connection with the number of slots required to be kept free for the non-blocking ports. The switch may thereafter dynamically allocate time slots to the connection, based on signal traffic. The switch may be reconfigured at the request of a customer, by updating routing and port type information stored in the switch. Also, control circuitry in the switch may initiate a reconfiguration, based on signal traffic.
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| Attorney, Agent or Firm: |
Cesari and McKenna ;
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| Primary / Asst. Examiners: |
Olms, Douglas W.; Jung, Min
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 28 claims |
What is claimed is:
1. A telephone switching system including:
- a time division multiple access bus;
- at least one customer port module, the customer port module coupled to receive a number of telephone signals on a plurality of customer ports, and to provide the telephone signals to the time division multiple access bus, and further coupled to receive telephone signals from the time division multiple access bus and to provide the telephone signals at the plurality of the customer ports;
- at least one network port module, the network port module coupled to receive a number of telephone signals from a telephone network on a plurality of network ports, and to provide the telephone signals to the time division multiple access bus, and further coupled to receive telephone signals from the time division multiple access bus and to provide the telephone signals to the network on the plurality of network ports; and
- means for controlling one or more connections between the plurality ports on the customer port modules and the plurality ports on the network port modules, by which any given telephone signal from a particular customer port module may be connected to a port on a network port module, the connections being made by allocating to the connection time slots on the time division multiple access bus; and
- dynamic allocation means for dynamically allocating the number of time slots to each such connection, by allocating, when a customer port is requesting access to a network port, an appropriate number of time slots required to service the connections aid dynamic allocation means including (i) means for detecting protocols that include in-band signaling information that indicates the bandwidth demand of the port; and (ii) means for determining from the in-band signaling information the number of time slots required to support the bandwidth demand.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 76 U.S. patent(s) that reference this one
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