James Ludford Phones & Addresses
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Waconia, MN
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17950 Cobblestone Way, Eden Prairie, MN 55347 (952) 949-9274
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Saint Paul, MN
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1965 Starlight Dr, Waconia, MN 55387
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Eau Claire, WI
Business Records
Name / Title
Company / Classification
Phones & Addresses
Chief Executive Officer
Sqwareware, Inc
Business Services at Non-Commercial Site · Nonclassifiable Establishments
Business Services at Non-Commercial Site · Nonclassifiable Establishments
1965 Starlight Dr, Orono, MN 55387
Publications
Us Patents
Telephone Switch Configuration Detector
View pageUS Patent:
6633639, Oct 14, 2003
Filed:
Dec 30, 1997
Appl. No.:
09/001019
Inventors:
James Donald Ludford - Eden Prairie MN
Assignee:
Nortel Networks Limited - Montreal
International Classification:
H04M 300
US Classification:
379244, 379243, 379 9301, 379 9308, 379 9309, 379 9311, 379 2601, 37939901
Abstract:
A telephony device such as a digital telephone or personal computer attaches to phone lines and automatically determines both the type of switch to which is connected, and the type of line card in the switch providing that connection. In addition, device functions and data types supported by the switch and line card are automatically determined, providing a fully automatically configurable device. Programming in the device monitors polling messages provided by the switch and line card having different formats to make the determination. The devices switch between two different flow control types supported by the different line cards, while listening for the polling messages. If a message is not received while using a first flow control type, the second is used. The capability of channel, voice or data, is also automatically determined once the switch type is known.