Telephonic communications – Subscriber line or transmission line interface – Power supply
Reexamination Certificate
2006-03-14
2006-03-14
Tran, Sinh (Department: 2646)
Telephonic communications
Subscriber line or transmission line interface
Power supply
C379S395010, C379S156000
Reexamination Certificate
active
07013007
ABSTRACT:
A method for generating power signals within a telephone server coupled to a computer system via an interface bus or in-house power connector, to a maximum number of telephones, and to a telephone trunk, the computer system providing a primary voltage signal and a secondary voltage signal, includes receiving the primary voltage signal and the secondary voltage signal from the computer system, generating a ringer power signal in response to the primary voltage, generating a direct inward dialing power signal in response to the primary voltage, the direct inward dialing power signal configured to provide a first operational power signal for telephones from the maximum number of telephones receiving telephone calls directly from the telephone trunk, generating a second operational power signal in response to the primary voltage for telephones from the maximum number of telephones receiving telephone calls from other telephones from the maximum number of telephones, and generating a ringing signal in response to the ringer power signal and to the secondary voltage signal, wherein the ringer power signal powers ringers of no more than approximately one half of the maximum number of telephones at a time.
REFERENCES:
patent: 3940572 (1976-02-01), Burgess
patent: 3978293 (1976-08-01), Feiner
patent: 4406004 (1983-09-01), Hall et al.
patent: 4539437 (1985-09-01), Giacopelli et al.
patent: 4578542 (1986-03-01), Alderman
patent: 4726060 (1988-02-01), Itoh et al.
patent: 5649005 (1997-07-01), Lynch et al.
patent: 5875234 (1999-02-01), Clayton et al.
patent: 5884086 (1999-03-01), Amoni et al.
patent: 6118862 (2000-09-01), Dorfman et al.
patent: 6154465 (2000-11-01), Pickett
Chiu Joseph
Chouldjian Simon
Liu Leo
AltiGen Communications, Inc.
Briney III Walter F
Townsend and Townsend / and Crew LLP
Tran Sinh
LandOfFree
Computer telephony power supply method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer telephony power supply method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer telephony power supply method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3533802