Michael Tasker Email & Phone Number

Salem Oregon

Provides technical consulting services includingVoIP, SIP, H.323Digital & Analog Telephony, FaxContact CenterDigital Signal Processing (DSP)Intellectual Property and PatentsTechnical Writer and Technical Documentation Review, published technical authorReal-Time Embedded SystemsC programing

Santa Clara

ArchitectIP OfficeIP Office Contact Center

San Jose Ca

Worked on voice over packet, Unified Communications, DSP and TDM, H.323, SIP, SCCP, FRF-11 telephony signaling technologies embedded in Cisco IOS based CPE routers (ISR), including Frame-Relay, voice-over-ATM and RTP for voice-over-IP. Worked with G.711, G.723 and G.729AB voice compression, echo cancellers, as well as Fax-Relay including T.38. Worked with analog and digital telephony interfaces, T1/E1, FXO, FXS, E&M. Primary architect and principal software developer for Cisco’s Unified… Show more Worked on voice over packet, Unified Communications, DSP and TDM, H.323, SIP, SCCP, FRF-11 telephony signaling technologies embedded in Cisco IOS based CPE routers (ISR), including Frame-Relay, voice-over-ATM and RTP for voice-over-IP. Worked with G.711, G.723 and G.729AB voice compression, echo cancellers, as well as Fax-Relay including T.38. Worked with analog and digital telephony interfaces, T1/E1, FXO, FXS, E&M. Primary architect and principal software developer for Cisco’s Unified Communications Manager Express (CME) and (SRST) Survivable Remote Site Telephony (IP based PBX software tightly integrated into Cisco IOS based ISR routers and Voice Gateways). Worked closely with marketing and large enterprise customers to acquire an in-depth understanding of customer use cases and end-user requirements, and translated those into working solutions. Obtained 23 issued patents for Cisco, as well as worked closely with Cisco attorneys successfully defending Cisco against a number of patent litigation lawsuits.Published author with Cisco Press : Cisco IP Communications Express ISBN 1-58705-180-X Show less

San Jose Ca

Worked as both an individual contributor and also led a very small team of 5-6 engineers working on application specific DSP devices based on DSP Group’s Oak and Pine DSP ASIC core technology. Developed custom DSP devices for early generations of consumer digital answering machines (TAD), as well as for audio processing in early H.324 video telephony systems (video over V.34 dial-up modems). Worked on real-time speech compression technologies including DSP Group’s proprietary 8.5 Kbit/sec… Show more Worked as both an individual contributor and also led a very small team of 5-6 engineers working on application specific DSP devices based on DSP Group’s Oak and Pine DSP ASIC core technology. Developed custom DSP devices for early generations of consumer digital answering machines (TAD), as well as for audio processing in early H.324 video telephony systems (video over V.34 dial-up modems). Worked on real-time speech compression technologies including DSP Group’s proprietary 8.5 Kbit/sec TrueSpeech technology, later moving into standards based compression including G.723, G.729AB, G.728. Developed the custom DSP chip used in Cisco’s (Selsius) early VoIP telephones. Worked with related DSP technologies including DTMF generation and detection, silence detection and compression (VAD), acoustic (speakerphone) and telephone line echo cancellers. Show less

Milpitas Ca

Worked for Octel on voicemail and fax store-and-forward systems. Designed and programmed a second generation voicemail DSP linecard using Intel 80386 and Texas Instruments C30 floating point DSP devices, upgrading the system from voice-store-and-forward voicemail to also include fax store-and-forward to support unified voice and fax mail used in both enterprise and service provider systems. Worked with T.37 fax technology and also developed a DSP based implementation of 22 kbit/sec CVSD… Show more Worked for Octel on voicemail and fax store-and-forward systems. Designed and programmed a second generation voicemail DSP linecard using Intel 80386 and Texas Instruments C30 floating point DSP devices, upgrading the system from voice-store-and-forward voicemail to also include fax store-and-forward to support unified voice and fax mail used in both enterprise and service provider systems. Worked with T.37 fax technology and also developed a DSP based implementation of 22 kbit/sec CVSD waveform speech compression as a replacement for legacy analog based linecards. Show less

Manchester, United Kingdom

Designed and developed 2 generations of linecard systems with analog telephony interfaces for one of the industry’s earliest voicemail systems, including some custom asics. Worked with Motorola, Intel and Zilog based microprocessors, mostly in assembly language. Designed custom programming language for controlling IVR user interface. Wrote a real-time multi-tasking kernel.