xDSL multiple-point interface device
US6731750B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1998 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Oct 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/007
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Multipoint interface devices (MPID) for digital subscriber line environments are provided. In one embodiment an MPID is provided for each item of customer premises equipment that is connected to the telephone line. An MPID may include a signal transform device having a particular signal transform function. For example, a low band MPID individually adapts each voice band device such as a telephone set, facsimile machine, PBX machine, or the like, to a standard telephone line. A high band MPID individually adapts high speed digital modem devices including ADSL, RADSL or HDSL to a customer's telephone line. Thus, each item of equipment is connected in parallel through an appropriate MPID to a common telephone line. In another embodiment an interface device includes selectable low-band and high-band MPIDs. In another embodiment, an MPID includes means for automatically engaging the MPID only when the affected line is in use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.