The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 2004
Filed:
Oct. 30, 1998
Bernard F. Bareis, Plano, TX (US);
TeraForce Technology Corporation, Richardson, TX (US);
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.