Accomplishments
1960s
- Helped build radio station and obtain FM license for KALX, FM
- Designed and built audiophile grade broadcast console
- Designed and built crossbar PABX with electronic common control
- Designed and built high level audio switching system for broadcast studios
- Obtained FCC First Class Radio Telephone License
1970s
- Helped design first subscriber carrier system
- Designed and installed first amateur 5.8 GHz digital microwave network
- Helped build first digital PCM, PABX
- Did research on voice and Ethernet, forerunner of VOIP
1980s
- Developed early MPLS type packet transport architecture
- Helped develop early TDMA microwave technology
- Helped found DAVID systems
- Helped develop a distributed telephone switch architecture that supported both voice, data and packet
- Continued deployment of amateur 5.8 GHz network which carried emergency traffic in 1989 earthquake
- Taught telephone signaling seminar at Stanford
1990s
- Consulted for Stanford University and helped develop first DMT DSL architecture
- Designed first DMT DSL line circuit (became the reference design)
- Helped do system design for high performance bridge routers
- Developed Fluid Networking transport architecture
- Developed new technology to reduce FCC regulated RF emissions for computer hardware
- Helped develop new telephone message waiting technologies
- Obtained MSR Locksmith License
- Helped develop CDMA telephone system design
- Helped do system design and hardware development for CISCO VOIP technology
- Developed Internet based telephone switching technologies
Patents
- 4061887
- Key telephone adapter for electronic telephone system
- 4361734
- Trunk interface circuit with current compensation
- 4579406
- Printed circuit board connector system
- 4586175
- Method for operating a packet bus for transmission of asynchronous and pseudo-synchronous signals
- 4689816
- Three relay C.O. trunk interface
- 4731827
- Interswitch line circuit
- 4975903
- Digital timeslot and signaling bus in a digital PBX switch
- 5557506
- Expandable data processing chassis and method of assembly there of
- 5559873
- Telephone privacy device with conference indicator features
- 5689406
- Expandable data processing chassis and method of assembly there of
- 5726506
- Hot insertion power arrangement
- 6020732
- Flux cancelling transformer line circuit
- 6529596
- Web based control of telephone
- 6532288
- Tandem access control processor connected to the public switched telephone network for controlling features
- 6574328
- Telephone call control system for the public switched telephone network