Full-duplex adapter for PBX telephone system

Details Full-duplex adapter for PBX telephone system Full-duplex adapter for PBX telephone system

1994-08-24

1996-08-27

Chan, Jason

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379 98, 379100, H04M 1100

Patent

active

055509010

ABSTRACT:
An adapter for interconnecting a tip-ring telephone, a PBX telephone, and a private branch exchange (PBX) is configured to pass out-of-band signals between the PBX telephone and the PBX and to attenuate voice-band signals therebetween when the tip-ring telephone is being used. The adapter includes a band-reject filter and a switching mechanism for connecting the band-reject filter between the PBX telephone and the tip-ring telephone.

REFERENCES:
patent: 3715513 (1973-02-01), Miller
patent: 3824347 (1974-07-01), Sorber et al.
patent: 3914559 (1975-10-01), Knollman
patent: 4088844 (1978-05-01), Kinnaird, Jr.
patent: 4689814 (1987-08-01), Warner, II
patent: 4759059 (1988-07-01), Christensen
patent: 4788720 (1988-11-01), Brennan et al.
patent: 4914690 (1990-04-01), Hagedorn
patent: 4987586 (1991-01-01), Gross et al.
patent: 5003580 (1991-03-01), Duong et al.
patent: 5097501 (1992-03-01), Kutzavitch
patent: 5237605 (1993-08-01), Peak et al.

Affiliated with

Also associated with

Rating

Full-duplex adapter for PBX telephone system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Full-duplex adapter for PBX telephone system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full-duplex adapter for PBX telephone system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1062057