Chi Look Email & Phone Number

Bellevue, Wa, Us

Serve as the Subject Matter Expert (SME) in multiple disciplines to second level (Tier 2) LCS technical support and engineering teams in the following platforms:5G/LTE/UMTS/GMLC and Wireless Emergency Alert platforms.Performs consultative support to Tier 2 Voice, Data & IP Platforms in the delivery of highly complex support for T-Mobile's wireless network elements, platforms, systems, applications and services. Coordinates development of system tools, audits, log correlation and data points to assure best possible health checks, reporting capabilities and performance improvements.Lead engineering and vendor teams with the validation of new products and services to ensure smooth network introduction.

Lead test engineer in Product Introduction, Verification and QA Test group. Provided end to end location service utilizing Uplink Time Difference of Arrival (U-TDOA), AGPS technology for E911 location to national carriers like AT&T and T-Mobile. Perform on-site Interoperability and Acceptance Test for TruePosition WLS (Wireless Location System) in conjunction with third party vendors’ MSC, RAN and NMS to perform location accuracy and network performance.Lead feature test engineer in QA test group. Designed, implemented and executed test plan for E911 location based applications. Configured WLS for testing new feature like Router Removal with Traffic Separation (Migrating the network traffic from WLS router pair to customer router pair, the OAM and Bearer traffic are on different network).

10/99 - 7/01: CDMA Software IntegrationLead test engineer in CDMA Software Integration Group. Responsible for deliverable test and feature test in call processing area and software debugging for the Call Distributed Base Station Project. Independently resolved lab problems related to switch/Executive Call Processor/cell sites/mobile hand sets. Worked closely with developers to identify software/hardware problems.Lead feature test engineer - designed, implemented and executed test plan, configured Domestic and International Modular cells for testing new features that utilized the firewire bus to share data among multiple T1/E1s. 5/98 - 9/99: CDMA System TestResponsible for testing CDMA Series II cells, Micro cells and Modular Cells, in the Call Processing and OA&M area. Created and implemented Microcell call load test plans; lead tester in running Microcell call load. Analyzed call load results to identify software/hardware problems in the system.6/96 - 5/98: Laboratories Environment Operation Management Lead system engineer in Lab Environment Operation Management group in Whippany. Responsible for engineering new MSC (Mobile Service Center) labs and provided consultation and technical support to Whippany wireless technical community. Responsible for analyzing software/hardware problems among all the 5ESS switches in the Whippany location. Software problems includes interpreting asserts and audits, errors application of software patches., loading new software for the switch and resolving 5ESS relational database problems. Implemented and tested the POTS (Plain Old Telephone Service) feature, which utilizes one of the time slots of the wireless trunks from the MSC Responsible for planning to add STPs (Signal Transfer Points), linking all MSC labs together; as to offer ISUP(ISDN User Part) trunking for Short Message Service and caller ID features. Provided engineering input for growth expansion of the switch to meet users' demand.

Dallas, Tx, Us

11/93 - 6/96: International Bid & ProposalsDeveloped 5ESS specifications to suit customers requirements/needs. Provided technical analysis of switching product applications (PSTN & wireless) to customers. Responsible for interpretation of technical requirements from various international customers. Provided consultation on traffic engineering in conjunction with dimensioning the 5ESS. Proven record of customer satisfaction as demonstrated by providing engineering input to resolve the India Department of Telecommunication switch congestion problem.

Dallas, Tx, Us

AT&T Bell Laboratories - Consumer Services DivisionSystem engineer in Switching and Evolution group at Holmdel Bell Laboratories. Responsible for feasibility study and producing formal customer Feature Specification Document which provided guidelines to the 4ESS Evolution Plan.

Dallas, Tx, Us

Network Services DivisionProtocol Testing Manager for the Network Interconnect (SS7 signaling) project team. Responsible for Protocol Compatibility testing on all D-link Quads between AT&T STPs (Signal Transfer point) and the Regional Operating Companies with all vendor types and an array of software prior to turn up of all services.

Dallas, Tx, Us

Regional Technical Support CenterProvided comprehensive 5ESS technical support to various Operating Telephone companies. Coordinated the effort and resources of AT&T Engineering Department and Bell Laboratories Development groups, achieving an efficient and reliable product support service. Led 5ESS software team of seven engineers. Specialized in 5ESS database, Recent Changes, Translations, Software Updates and the 3B20/21 processors. Provided emergency 5ESS support to TELCOs on a 24 hours/7 days a week basis.

Dallas, Tx, Us

Switching System TestInvolved in 5ESS development with AT&T Bell Laboratories at Indian Hills. Conducted intensive system software debugging. Assisted in the start up of Factory System Test program for 5ESS. Participated in 5ESS Database development. Proficient in Unix, Shell programming, and working knowledge in C programming. Experienced in analyzing C programming for troubleshooting 5ESS software bugs.

Ms, Telecommunication Management

Bsee, Computer Engineering