Randolph Telecom provides engineering consulting services for the design of telecommunications products:
Circuit Design and Prototyping of Telecom Products
- POTS (Plain Old Telephone Service)
- VOIP (Voice Over Internet Protocol)
- CTI (Computer Telephony Integration)
- Data and Fax modems
- T1, E1, ISDN, DSL
International Regulatory Compliance for Homologation
- Safety standards UL 60950, IEC 60950, EN 60950, EN 41003
- EMC standards FCC Part 15, EN 55022, and EN 55024
- Analog PSTN interfaces, including FCC Part 68, ETSI TBR 21
- Resistibility standards ITU K.21 and K.22
- Industry standards TIA-464, TIA-470, TIA-968 and TIA-810-B
Telcordia NEBS GR-1089-CORE (USA) and EN 300 386 (EUROPE)
- Lightning immunity
- Power cross and AC power fault
- Conducted RF immunity
- ESD immunity
Lightning Protection
- Compliance with regulatory standards for lightning immunity
- Coordination of primary and secondary lightning protection
- Troubleshooting field failures
- Optimizing the cost of protection circuitry
Handset Telephony
- Telephone speech transmission per TIA 470, ETSI TBR 38
- Loudness ratings (TOLR, SLR, etc.)
- Sidetone
- Noise and hum
- Echo
Engineering Design Reviews and Troubleshooting
- Reviews for compliance with design goals
- Pre-testing for regulatory compliance
- Troubleshooting specific problems
- Cost reduction
Expert Witness and Patent Assistance
- Analyze patent claims for infringement or non-infringement
- Research prior art
- Product testing
- Explain complex technology in non-technical terms
- Assist with drafting patent applications