Patent US5761293A successfully refreshed from Google Patents.
US5761293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
ISDN communication system and method thereof
Assignee: Google Technology Holdings LLC
•
Filing: 1996-06-28
•
Granted: 1998-06-02
•
Expires: 2016-06-28
Abstract
Abstract A network interface (105) uses valid identifiers including the DN, SPID and Switch ID to communicate with a PSTN (110) and uses generic identifiers to communicate with customer premise equipment (120) in order to establish an ISDN communication link when the customer premise equipment does not know the DN, SPID, and Switch ID.
Inventors
- 👤 Douglas J. Newlin
- 👤 Robert D. Battin
- 👤 Robert W. Lancelot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:52
CPC Classifications
H; H04; H04M; H04M7/00; H04M7/006; H04M3/00; H04M3/42; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0435; H04Q11/0457; H04Q2213/00; H04Q2213/13097; H04Q2213/13109; H04Q2213/13202; H04Q2213/13204; H04Q2213/13209; H04Q2213/13332
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
87 words
A network interface comprising: a cable control unit for communicating with telephony network through a first Integrated Services Digital Network (ISDN) communication link; a cable access unit coupled to the cable control unit; a data base for storing a valid identifier coupled to the cable access unit; and the cable access unit establishing a second ISDN communication link between the customer premise equipment and a telephony network by reading the valid identifier from the data base and using the valid identifier to communicate with the telephony network.
Claim 2
Dependent Claim
87 words
A network interface comprising: a cable control unit for communicating with telephony network through a first Integrated Services Digital Network (ISDN) communication link; a cable access unit coupled to the cable control unit; a data base for storing a valid identifier coupled to the cable access unit; and the cable access unit establishing a second ISDN communication link between the customer premise equipment and a telephony network by reading the valid identifier from the data base and using the valid identifier to communicate with the telephony network.
Claim 3
Dependent Claim
21 words
A network interface according to claim 1 wherein the cable access unit communicates with customer premise equipment using a generic identifier.
Claim 4
Dependent Claim
23 words
A network interface according to claim 1 wherein the data base is coupled to the cable access unit through the cable control unit.
Claim 5
Dependent Claim
21 words
A network interface according to claim 1 wherein the cable access unit sends an endpoint identifier to the customer premise equipment.
Claim 6
Dependent Claim
16 words
A network interface according to claim 4 wherein the cable access unit generates the endpoint identifier.
Claim 7
Dependent Claim
21 words
A network interface according to claim 4 wherein the cable control unit sends the endpoint identifier to the cable access unit.
Claim 8
Dependent Claim
22 words
A network interface according to claim 1 wherein the cable access unit communicates with the telephony network using a service profile identifier.
Claim 9
Dependent Claim
21 words
A network interface according to claim 1 wherein the cable access unit communicates with the telephony network using a directory number.
Claim 10
Dependent Claim
21 words
A network interface according to claim 1 wherein the cable access unit communicates with the telephony network using a switch identifier.
References Cited (Backward Citations)
US5062108A
Cited
US5550913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-01 | 2001-12-01 | 2002-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-01 | 2005-12-01 | 2006-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-01 | 2009-12-01 | 2010-06-02 | $7700.00 | Window Closed / Lapsed |