Multiple U channel ISDN communications interface

Details Multiple U channel ISDN communications interface Multiple U channel ISDN communications interface

1997-09-26

2000-10-17

Vu, Huy D.

Multiplex communications

Special services

Conferencing

370420, H04L 1216

Patent

active

06134222&

ABSTRACT:
A method and apparatus is provided for interfacing a plurality of ISDN lines from a telephone company central office to equipment which transmits video data, such as videoconferencing equipment. A single telephone wiring jack is directly coupled to two, three, or four ISDN lines without conversion to S/T channels. The single telephone wiring jack is coupled to an interfacing device which converts each ISDN line format into a format compatible with the videoconferencing equipment, such as the Multi-Vendor Interface Protocol format. Rather than using conventional wiring pin-outs for the single telephone wiring jack, all pins of the jack may be allocated to carrying ISDN data. The inventive method and apparatus avoids the expense of various conversion devices and wiring of separate telephone jacks, and permits as many ISDN lines to be allocated as are needed to support a desired bandwidth.

REFERENCES:
patent: 5204860 (1993-04-01), Sparks
patent: 5276679 (1994-01-01), McKay et al.
patent: 5305312 (1994-04-01), Fornek et al.
patent: 5787087 (1998-07-01), Visser et al.
patent: 5815505 (1998-09-01), Mills
patent: 5845211 (1998-12-01), Roach, Jr.
Flegg R: "Computer Telephony Architectures: MVIP, H-MVIP, and SCBUS" IEEE Communications Magazine, vol. 34, No. 4, Apr. 1, 1996, pp. 60-64.
The Siemon Company, Network Stabling Standards, "UTP Cabling", taken from (www.siemon.com/utp.html) believed to be Mar. 1999.
Comstar Company, "Protectnet for ISDN", taken from (www.gy.com/spec/bvnp.htm) believed to be Mar. 1999.

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