Expert Details

Expert in Internetworking, VoIP (Voice over Internet Protocol), and Digital Communication

Expert ID: 107613 North Carolina, USA

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Expert has over 35 years of experience in the computer/communications industry and specializes in network technology. As founder and president of DAX Associates, an 18-year-old network industry analyst and consulting firm, he has assisted numerous clients in developing application solutions and evaluating and selecting vendor products for their communication network needs. He also produces white papers, competitive analysis reports, and applications/solutions articles for network industry vendors. Expert has conducted numerous network industry seminars and developed his own seminar on ATM technology. He also produced a 300-page market study on Ethernet, Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet technologies, and more recently, a 160-page market study on WiMAX, the broadband wireless technology for MANs which is sold globally through the IGI Group. He has authored copious technical articles over his career that have appeared in prominent U.S. and foreign trade journals. Expert specializes in LAN, MAN, WAN, broadband, and wireless technologies, standards, applications, and strategies.

Expert has expertise in communication network design, transport technology evaluation, and component evaluation and selection. His expertise includes wide area networks (WANs), broadband networks, local area networks (LANs), LAN/WAN internetworking concepts and techniques, and wireless technology, all in which he specializes. He has applied his extensive network expertise to network performance, security, and reliability. He has conducted seminars on various LAN/WAN-related subjects and developed his own specialized seminar on Asynchronous Transfer Mode (ATM) technology. He has also published copious technical articles on these subjects in major trade journals over his long career.

Expert has expertise in Local Area Network (LAN) concepts, technologies, topologies (Ethernet, FDDI, Token Ring, and 100VG-AnyLAN), protocol layers, networking, protocols, standards, cabling, Layer 2/3 switching/routing, and network devices including hubs, switches, routers, bridges, repeaters, network interface cards (NICs), servers, firewalls, network storage systems, and network management. Expert has expertise in Ethernet, Fast Ethernet (IEEE 802.3u), Gigabit Ethernet (IEEE 802.3z), and 10 Gigabit Ethernet (IEEE 802.3ae) standards and technologies, Virtual LANs (VLANs), Virtual Private Networks (VPNs), protocols (including network, routing, multicasting, and others), IEEE 802.1 & 802.3 standards, interfaces (including 1000Base-SX/LX/T), port type and interface modules, link aggregation (trunking), cabling (coaxial, fiber, copper- shielded twisted pair (STP), unshielded twisted pair (UTP)-Category 3, 4, 5 & 6 copper cabling, etc.), Layer 2/3/4 Quality of Service (QoS) such as DiffServ, Multi-Protocol Label Switching (MPLS), security measures, and redundancy. Expert is also cognizant of Packet over SONET (PoS) technology and 10 Gigabit Ethernet connection to a SONET network at OC-192. He produced a comprehensive 300-page market study on these technologies, which is sold globally through the IGI Group.

He has expertise on wide area networks (WANs). He is cognizant of the International Standards Organization's (ISO) Open Systems Interconnection (OSI) protocol stack, which divides communications into seven independent protocol layers. He is familiar with asynchronous, isochronous, and synchronous networks, half- and full-duplex transmission, network protocols (such as SDLC, HDLC, TCP/IP, and SNMP), network interfaces, signaling, permanent virtual circuits (PVCs), switched virtual circuits (SVCs), and multiplexing technologies including frequency division multiplexing (FDM) and time division multiplexing (TDM), switching, X.25 packet switching, frame relay (a fast packet switching technique), Fractional T1, T1/E1, and T3/E3, ISDN Basic Rate and Primary Rate transmission and Asynchronous Transfer Mode (ATM) technology. He is familiar with modems, modem pooling, statistical and T1 multiplexers, CSU/DSUs, Channel Banks, Digital Access and Cross-connect Systems (DACS), X.25 Packet Assembler/Disassemblers (PADs), Frame Relay Assembler/Disassemblers (FRADs), and communication processors. He is also cognizant of digital encoding techniques, such as Pulse Code Modulation (PCM), Adaptive PCM (APCM), Differential PCM (DPCM), and Adaptive Differential PCM (ADPCM).

He has expertise in various types of broadband network concepts and technology for enterprises, service providers, and carriers, including T1/T3, E1/E3, ISDN (Basic Rate and Primary Rate), Digital Subscriber Line (DSL), Asynchronous Transfer Mode (ATM), Synchronous Optical Network (SONET), Synchronous Digital Hierarchy (SDH), Wavelength Division Multiplexing (WDM) Course WDM (CWDM) & Dense WDM (DWDM), and others, such as Gigabit Ethernet over SONET and Gigabit Ethernet and 10 Gigabit Ethernet over WDM. He has developed a seminar on ATM technology. Expert is also cognizant of Resilient Packet Ring (RPR) technology for metropolitan area networks (MANs).

He also specializes and has expertise in wireless communication and technology. He is cognizant of wireless concepts established by vendors in the wireless industry and wireless standards created by the IEEE 802.11 Task Group. He is cognizant of protocols, and security measures such as the IEEE 802.11i standard which the Wi-Fi Alliance dubbed Wi-Fi Protected Access (WPA). He maintains an awareness of ongoing development in the wireless industry, such as voice over wireless LAN (VoWLAN), as well as the development of wireless standards by IEEE 802.11 Task Groups, such as QoS for voice/data convergence on WLANs supported by IEEE 802.11e, fast roaming supported by IEEE 802.11i and developing IEEE 802.11r standards, VoIP, and emerging new concepts and technologies, such as IEEE 802.11n that promises minimum raw data rates of 100 Mbps, which has been dubbed MIMO for Multiple Input/Multiple Output, and IEEE 802.11s for mesh networks in this rapidly-growing industry. He is also in touch with the Wi-Fi Alliance and is cognizant of wireless IP phones produced by vendors such as Motorola and SpectraLink. Expert also remains in touch with the WIMAX Forum and the work it is doing to support the IEEE 802.16 Working Group on the Air Interface Standard for broadband wireless access applications. Expert is also familiar with the IEEE 802.15 Wireless Personal Area Networks (WPAN) standard and with Bluetooth and ZigBee WPAN technologies, which operate in the 2.4 GHz frequency spectrum.

This VoIP expert is familiar with telecommunications technology, such as PBX systems and equipment, Voice over IP, (VoIP), standards, features, and technology. He is able to act as a VoIP consultant as well as with other areas of fixed and wireless telecommunications.

Expert may consult nationally and internationally, and is also local to the following cities: Charlotte, North Carolina - Raleigh, North Carolina - Greensboro, North Carolina - Durham, North Carolina - Winston Salem, North Carolina - Fayetteville, North Carolina - Cary, North Carolina - High Point, North Carolina - Greenville, North Carolina - Concord, North Carolina

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Year Degree Subject Institution
Year: 1968 Degree: BSEE Subject: Electrical Engineering Institution: Drexel University

Work History

Years Employer Title Department Responsibilities
Years: 1987 to Present Employer: Undisclosed Title: President Department: Undisclosed Responsibilities: Expert is an independent consultant and industry analyst in the networking industry. He consults with users and vendors on network applications and strategy, user needs, technology, and product evaluation.
Years: 1980 to 1986 Employer: Undisclosed Title: Director, Communications Reference Service Department: Undisclosed Responsibilities: He was Communications Director for an analytic communication industry reference service. He managed a staff of 10 analysts.
Years: 1969 to 1980 Employer: DataPro Title: Undisclosed Department: Undisclosed Responsibilities: Expert was an analyst and developer of Datapro 70 and Datapro Reports on Communications, which were computer industry reference services.
Years: 1963 to 1969 Employer: Undisclosed Title: Senior Technical Instructor Department: Undisclosed Responsibilities: He instructed customer and field service personnel on internal computer logic design. He produced technical field service manuals on computers and peripherals.

Career Accomplishments

Associations / Societies
Member of the IEEE Communications Society.

Publications and Patents Summary
He has authored numerous technical articles that have appeared in leading U.S. trade journals, including Network World, Business Communications Review, Computerworld, Datamation, Data Communications, and Networking Management.

Fields of Expertise

digital communication, digital communications network architecture, internetworking, computer networking, digital telecommunication, digital transmission, LAN/WAN interconnection, data communication network, data transfer, network performance, network reliability, network security system, communications technology, local area networking, Ethernet Network, local-area network communication protocol, token ring network, Switched Ethernet Network, Shielded Twisted-Pair Distributed Data Interface, Point-to-Point Protocol, 10BaseT, fiber-optic data-distribution interface, local-area network management, Telnet, Transmission Control Protocol/Internet Protocol, bisynchronous transmission, computer data communication protocol, fractional T1, frame relay packet switching, modem pooling, multiplexing equipment, packet switching network, X.25 standard, asynchronous data transmission, forward error correction system, frequency division multiplexing, High-level Data Link Control, time-division multiplexing, broadband network, synchronous optical network, broadband integrated services digital network, wavelength division multiplexing, wireless communication, wide-area network, wireless data transmission, infrared communication, mobile telecommunication, packet radio network, pulse-code modulation link, 802.11x, 802.16x, bluetooth, cellular communication, code division multiple access, digital demodulation, voice over IP, wireless voice over IP, digital subscriber line technologies, synchronous digital hierarchy, dense wavelength division multiplexing, optical network architecture, digital evidence, wideband code division multiple access, time division synchronous code division multiple access, EVDO, 3xRTT, 1xRTT, International Mobile Telecommunications-2000, EDGE, 4G mobile network, global system for mobile communication, direct sequence spread spectrum, frequency division multiple access, fixed wireless access, wireless internet, 2G mobile network, multiplex (communications attribute), physical layer, mobile data communication, industrial local area network, value-added network, network management system, quadrature phase shift keying modulation technique, RS-485, asynchronous communication, RS-449, RS-422, network hub, local-area network facsimile communication, mobile data terminal, baud, digital data link, local area network coaxial cable, digital telephony, amplitude shift keying, wireless local area network, broadband, data jack, matrix switch, communication server, frequency hopping, code division multiplexing, digital switching, computer network standard, ASCII code, cellular antenna, digital data, ZMODEM, YMODEM, XMODEM, multiplexer, time division multiple access technology, packet switching system, time division multiple access, communication technique, packet switching, asynchronous transfer mode, cellular telecommunication, RS-232, data communication protocol, spread spectrum communication, telecommunication equipment electrical protection, local-area network security, local-area network operating system, local area network, data communication, computer communication, radio transmission, multiplexing, telecommunication, analog signal, communication network, communication system, radio local area network, repeater, data communication standard, communication standard, token passing, T1 carrier, systems network architecture, relay, radio communication, point-to-point radio link, network architecture, modem, mobile radio system, telecommunication link, integrated services digital network, integrated services digital network standard, data communication equipment, computer network, broadband communication

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