Splitterless modem with integrated off-hook detector
US6269154A · kind A · utility
18Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Feb 4, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/062
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A splitterless DSL modem (200) with an integrated off-hook detector (260) prevents data loss and/or disconnections as a voiceband device (154) coupled to the same transmission line (150) transition between steady states. The splitterless DSL modem (200) include a DSP (260), an interface (250) to a twisted pair wire line (150), signal converters (220, 222), and various filters (230, 240). The off-hook detector circuit (260) can be coupled to the interface (250) on the analog side of the DSL modem (200) or on the digital side of the signal converters (220, 222).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.