David Harrison Email & Phone Number

Westford, Ma, Us

Developed call flow analysis for NetScout CDM real time packet analysis engine to support: - SIP call signaling in VOIP/IMS cellular networks. - SIP fragmentation reassembly support for IP, TCP and SCTP transports- Generic fragment reassembly library module supporting TCP, IP, IP Tunnel, SCTP/SCTP Tunneled, ESP Tunneled, SIP/both in sequence and out of sequence fragments - RTP streaming classification and analysis (US patent 9,065,744 06/23/2015)- Data & control plane signaling in GSM, UMTS & LTE- LTE cellular network protocol session management and packet analysis (Gn, Gi, S11, S5/8, S4, S1u, S102, SMS and S2B interfaces)Technical Specialties:- Packet flow based application/network performance - Network fault determination- In depth knowledge of Cellular Mobile protocols: CDMA 2K, GSM, UMTS, LTE and IMS- VOIP protocols: SCCP, H323, SIP & RTP- IPv6 Embedded Linux and Windows platformsComplex problem solving and troubleshooting skills

Us

- Managed team responsible for successful delivery of Infinistream VOIP Intellegence analysis module.- Designed and implemented portions of Infinistream CDMA Cellular Call Indexing sollution.- Complete project life-cycle experience - requirements, design, development, and release. -

San Jose, California, Us

Managed team responsible for Expert Analysis and Decodes. Developed CDMA Cellular Analysis support in ExpertManaged delivery of VOIP Expert 2.0 release

Developed Java RMI Client/Server Application used to manage configuration of CacheFlow Client and Server Accelerator boxes and Content Management product. Communication facilitated by Telnet and SSH.

Ca

Developed new Optivity feature to provide End Node device profile for switches and hubs. MAC Address, auto-negotiate, port speed and duplex mode are obtained using SNMP MIB polling. Product is based on a C++ server and Java client.

Us

Developed protocol decodes and Expert analysis modules

Education record

Education record