Dr. Tal Lavian

Telecommunications, Network Communications, Internet Protocols (TCP/IP), and Mobile Wireless Expert

A scientist, educator, and technologist with over 30 years of experience, Dr. Lavian is an expert in telecommunications, network communications, mobile wireless, and Internet Protocols (TCP/IP). He offers expert witness services and provides courtroom presence, clear testimony, and an ability to effectively distill complex concepts into understandable basics and commonsense.

Dr. Lavian holds a Ph.D. from the University of California, Berkeley in Computer Science, specializing in network communications.

For 20 years, Dr. Lavian has researched, studied, and lectured at UC Berkeley Engineering. He focused on network services, telecommunications systems, data networks, software, network protocols, and communications infrastructure.

Dr. Lavian acted as an industry fellow and lecturer at the Sutardja Center for Entrepreneurship and Technology (SCET) at U.C. Berkeley. While there, he conducted research projects in data centers (RAD Labs), telecommunication infrastructure (SAHARA), and wireless systems (ICEBERG). He also acted as the scientific liaison between Nortel Research Lab and UC Berkeley, providing tangible value in advanced technologies. Dr. Lavian was also part of UC Berkeley SkyDeck Start-ups, where he advanced technology research and implementation through various projects.

Dr. Lavian has co-authored over 25 scientific publications, journal articles, peer-reviewed papers, presented his results in scientific conferences. He is an inventor of over 120 issued and filed patents.

Areas of Expertise:

Dr. Lavian has extensive experience in the software development of network protocols, designs, architectures, configurations, installations, and network testing. He has academic and hands-on experience in a vast array of varying technology products, implementations, related standards, hardware, system, and software technologies. Areas of expertise include:

Network Communications:

Network communications including Internet protocols; TCP/IP suite, TCP, UDP, IP, MAC Ethernet, 802.3, network protocols, network software applications, data link, network, and transport layers (L2, L3, L4), packet switching, data networks, computer networks, and network architectures.

Mobile Wireless:

Mobile wireless networks including Wi-Fi, 802.11, Bluetooth, MAC, PHY, Wireless LAN (WLAN). Cellular systems, SMS, MMS, instant messaging (chat), mobile devices, and smartphones.

Internet (TCP/IP) and Cloud:

Internet cloud communications including Internet Technologies, Web applications, HTTP, e-mail, SMTP, POP, IMAP, Java, C/C++, file transfer FTP, client-server, cloud computing, and distributed computing.

Routing and Switching:

Routing and switching systems, architectures, and protocols Including LAN, WAN, VPN, routing protocols, RIP, BGP, MPLS, OSPF, multicast, DNS, QoS, priority queuing, network infrastructure, and network communication architectures.

VoIP and Streaming Media:

VoIP protocols, VoIP systems, streaming media, IP telephony, SIP, RTP, H.323, MGCP, video/audio conferencing, multimedia, and video/audio streaming.

Telecommunications and Unified Communications:

Telecommunications and unified communications including PSTN, circuit switching, SS7, SONET, TDM, telecom architecture, network infrastructure, network design, switch architectures, network redundancy, and resiliency.

Network Communications Expert

Dr. Lavian earned his Ph.D. from the University of California, Berkeley, in Computer Science, specializing in network communications. He provides expert product and technology consultation in data communications, computer networks, network communications, and Internet technologies.

Dr. Lavian provides expert witness services in network communications systems, architectures, products and protocols. He consult in the areas of Computer networks, network architectures, network protocols, communication systems, communication devices, packet switching, networked systems, Internet technologies, distributed systems, and data center network architecture.

Expert witness network communications services in network communications including data communications, computer networks, network architecture and packet switching. He is an Internet protocols expert including TCP/IP suite, TCP, UDP, IP, MAC Ethernet, 802.3, network protocols, network software applications, data link, network, and transport layers (L2, L3, L4).

Mobile Wireless Expert

Dr. Lavian’s academic background and practical industry experience provide him with a profound depth and breadth of knowledge regarding mobile wireless systems, devices, and networks. He is highly experienced in all aspects of the relationships between wireless applications and their underlying communications service architectures, designs, and implementations.

Areas of expertise include Wi-Fi, 802.11, Bluetooth, MAC, PHY, Wireless LAN (WLAN), SMS, MMS, Instant Messaging (IM) chat, handsets, mobile devices, smartphones, cellular networks, wireless technologies, architectures, standards, systems, and backend infrastructure.

Dr. Lavian’s expertise in mobile wireless technologies includes Wi-Fi, 802.11, Bluetooth, MAC, PHY, Wireless LAN (WLAN), SMS, MMS, instant messaging (chat), handsets, mobile devices, smartphones, cellular networks, wireless technologies, architectures, standards, systems, and backend infrastructure.

Internet Protocol Suite (TCP/IP) Expert

Dr. Lavian has expertise in Internet Protocol Suite (TCP/IP), including:

Internet protocols: (TCP/IP): TCP, UDP, IP, MAC, HTTP, VPN, e-mail, SMTP, POP, IMAP, FTP, Telnet, SSH, SNMP, DHCP, DNS, NNTP, POP, SIP, IPv4, IPv6, IPSec.

Architecture and Cloud Computing: Web applications, client-server, cloud computing, distributed computing, peer-to-peer networking, virtual private networks, tunneling, content networking, network security, and mobile applications.

Programming languages and Communications Software: Java, C/C++, software APIs, network configuration and scripting, and network management.

Routing and Switching Expert

Dr. Lavian has extensive hands-on industry experience coupled with academic knowledge of routing and switching technologies, including:

LAN, WAN, VPN, tunneling, routing protocols, RIP, BGP, MPLS, OSPF, multicast, DNS, QoS, switching, packet switching, layer 2 switching, layer-3 switching, layer-4 switching, application switching, load balancing, and firewalls.

Routers, switches, gateways, and IETF RFC standards which define relevant functional architectures, protocol specifications, and forwarding.

Networking principles, software and hardware architectures, ASIC, firmware, high-speed backplanes, control-planes, data-planes, blocking and non-blocking architectures, priority queuing, time-to-live, packet addressing, and routing/switching table structures.

Telecommunications, VoIP, SIP, and Streaming Media Expert

As an expert in telecommunications, VoIP, and streaming media, Dr. Lavian has substantial knowledge of integration processes with SIP, Internet protocols (TCP/IP), and PSTN as part of unified communications.

Dr. Lavian draws upon decades of academic and hands-on experience in designing and implementing unified communications solutions, including:

VoIP protocols, VoIP systems, and streaming media, IP telephony, SIP, RTP, SMS, MMS, video/audio conferencing, streaming media, instant messaging (chat), H.323, MGCP, codecs (such as G.711. G.722, G.729), public switched telephone networks (PSTN), circuit switching, SS7, SDH, and SONET.