US5598455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm and test system for a digital added main line
Assignee: Tyco International Ltd Bermuda
•
Filing: 1994-12-20
•
Granted: 1997-01-28
•
Expires: 2014-12-20
Abstract
Abstract A test system directed to apparatus for transmitting and receiving multiple telephone transmission signals over a single twisted pair. The system converts an analog signal from a local switching station to an 80 ksymbols/sec signal for transmission over a twisted pair by a line card. A remote terminal converts the 80 ksymbols/sec signal back into a conventional analog signal for use in conventional telephone, facsimile or other related equipment. The test equipment separately tests the entire system, the line card portion of the system, the remote terminal portion of the system, and the twisted pair.
Inventors
- 👤 David C. Bliven
- 👤 Anthony Vranicar
- 👤 Philip B. Vail
- 👤 Gerald L. Shimirak
- 👤 Julian S. Mullaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/24; H01; H01R; H01R13/00; H01R13/44; H01R13/443; H01R13/46; H01R13/52; H01R13/5216; H02; H02G; H02G15/00; H02G15/08; H02G15/10; H02G15/117; H04M3/00; H04M3/22; H04M3/24; H04M3/244; H04M3/245; H04M3/26; H04M3/28; H04M3/30; H04M3/302; H04M3/303; H04Q; H04Q1/00; H04Q1/02; H04Q1/028; H04Q1/03; H04Q1/18; H04Q1/20; H01R2201/00; H01R2201/16; H01R24/00; H01R24/60; H01R24/62; H04Q2213/00; H04Q2213/13003; H04Q2213/13034; H04Q2213/13096; H04Q2213/1316; H04Q2213/13162; H04Q2213/13179; H04Q2213/1319; H04Q2213/13194; H04Q2213/13199; H04Q2213/13335; Y; Y10; Y10S; Y10S439/00; Y10S439/933; Y10S439/936; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A first telephone line connector, connectable to a second telephone line connector comprising first and second electrical conductors providing telephone signals and third and fourth electrical conductors connectable to subscriber equipment, said first telephone line connector comprising: a first shunt conductor for connecting the first and third electrical conductors in the second telephone line connector when said first telephone line connector is connected to the second telephone line connector; a second shunt conductor for connecting the second and fourth electrical conductors in the second telephone line connector when said first telephone line connector is connected to the second telephone line connector; and said first telephone line connector being environmentally protected with a gel sealing means.
Claim 2
Dependent Claim
115 words
A first telephone line connector, connectable to a second telephone line connector comprising first and second electrical conductors providing telephone signals and third and fourth electrical conductors connectable to subscriber equipment, said first telephone line connector comprising: a first shunt conductor for connecting the first and third electrical conductors in the second telephone line connector when said first telephone line connector is connected to the second telephone line connector; a second shunt conductor for connecting the second and fourth electrical conductors in the second telephone line connector when said first telephone line connector is connected to the second telephone line connector; and said first telephone line connector being environmentally protected with a gel sealing means.
Claim 3
Dependent Claim
28 words
A first telephone line connector as recited in claim 1, wherein said first telephone line connector is a plug and the second telephone line connector is a socket.
Claim 4
Dependent Claim
21 words
A first telephone line connector as recited in claim 1, wherein said first telephone line connector is used in subscriber equipment.
Claim 5
Dependent Claim
22 words
A first telephone line connector as recited in claim 1, wherein said first telephone line connector is used in telephone company equipment.
Claim 6
Dependent Claim
28 words
A first telephone line connector as recited in claim 1, wherein said first telephone line connector is a socket and the second telephone line connector is a plug.
Claim 7
Dependent Claim
26 words
A first telephone line connector as recited in claim 2 or 5, wherein said plug is an RJ-type plug and said socket is an RJ-type socket.
Claim 8
Dependent Claim
24 words
A first telephone line connector as recited in claim 6, wherein said plug is an RJ11-type plug and said socket is an RJ11-type socket.
References Cited (Backward Citations)
US3020260A
Cited
US3522576A
Cited
US3922493A
Cited
US4046964A
Cited
US4205204A
Cited
US4270030A
Cited
GB2064270A
Cited
US4425017A
Cited
US4380810A
Cited
US4393491A
Cited
US4417333A
Cited
US4338496A
Cited
US4430530A
Cited
US4864725A
Cited
US4634207A
Cited
US5140746A
Cited
US4643924A
Cited
US4662692A
Cited
EP0213874A2
Cited
US5085597A
Cited
US4741709A
Cited
US4788680A
Cited
US4748651A
Cited
US4942270A
Cited
EP0319306A2
Cited
US4979209A
Cited
US4824390A
Cited
US4846721A
Cited
US4924492A
Cited
US4924489A
Cited
US4945560A
Cited
DE3823925A1
Cited
US4927386A
Cited
US4998894A
Cited
EP0370423A2
Cited
EP0382646A1
Cited
US5130818A
Cited
US4917617A
Cited
WO1991001600A1
Cited
US4945555A
Cited
WO1991015038A2
Cited
US5228018A
Cited
US5202919A
Cited
US5111497A
Cited
US5235638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |