Tresa Tieu has over 10 years of experience in telecommunications systems integration testing. She has held several roles including senior commissioning engineer, DACS/Granite engineer, location services engineer, field test engineer, and test engineer. Her experience includes testing wireless networks and systems for companies like Samsung, Mycom-USA, Ericsson, TruePosition, and Nortel Networks. She has strong analytical skills, is resolution-driven, and is an excellent individual contributor and team player.

1. TRESA TIEU
U.S. Citizen
135 Green AcresDrive (C): 469-235-8570
Murphy, TX 75094 E-mail: trinhttieu@yahoo.com
QUALIFICATION
10 years of experience in telecommunications systems integration testing.
 Strong analytical and problem solving skills
 Resolution driven with effective communications.
 Solid individual contributor and excellent team player.
 Strong expertise in realtime embedded wireless telecommunication system.
PROFESSIONAL EXPERIENCE
WorldLink (Samsung). Richardson
Senior Commissioning Engineer at Samsung Telecommunications America (01/2013 up to date)
 Sprint NV/2.5 TDD project that includes CDMA (1900 &800) / LTE (FDD B25 & B26 /TDD B41)
Macro/DAS/CNS Sites commissioning, integration and site relocation.
 Commissioning included growing a site, establishing connectivity to the site, defining the IP routes and link
to MME, implementing generalsite configuration.
 Extensive Troubleshooting of Hardware alarms and issues like RSSI, VSWR and power of the antenna, and
supporting Field and RF drive team to test the site successfully for CDMA &LTE
 Making 3G & 4G sites commercial after validation and optimizing the performance by changing
configuration.
 Involved in ECSFB trial, implementation and defining EHRPD neighbor relations for each site.
 Implementing Capacity add, Carrier add, Sector add and also changing the site diversity from Ground mount
to full build configuration and vice versa
Mycom-USA. Los Angeles, CA
DACS/Granite Engineer (04/2009 to 12/2012)
Working with the UMTS IuB Growth project for the Los Angeles market. The scope of the project is to verify
the T1 from the MSN to the Node B, followed by integration of the T1. The project is very successfulwith
extremely high customer satisfaction. Responsibilities include:
 Testing T1, DACS/NIU via Net analyst.
 Validating and implementing DACS X-connect.
 Performing E2E testing with the field techs.
 Verifying MSN port assignment.
 Performing Granite update. (Comment: is this for data integrity? Elaborate a little?)
 Creating CIQ and script to redesign T1 reduction for GSM network.
 Loading baseline scripts for new site builds and carrier adds.
 Verifying new site builds and carrier adds loaded correctly without alarms.
Ericsson. Pleasanton, CA
Location Services(LCS) Engineer (09/2007-09/2008)
Integration System Design:
 Designed and planned Network optimization for TMO network within the west region.
 Allocated circuit facility assignments for various bandwidths and updated the transport database.

2.  Prepared section 8 engineering data, T1 circuit assignments, and network element connectivity for all
aspects of GSM and E911 networks.
 Configured core network equipment (WLG, SMLC, AMS, Router, Switch, LMU) and interface signaling to
other network elements such as BSC, MSC, MGW and GMLC.
 Provided technical support and analysis of call failure after network migrations.
California network redesign project:
 Planned T1, DS3 capacity for network optimization. Provided equipment assignments for network redesign
team.
 Designed circuits (Abis, A-Interface,PSTN,Gb link, UMTS). Updated circuit designs in Granite for
transport database.
 Worked with cross-functional transport and market groups to create the T1/DS0 grooming template and
verify circuit connectivity assignments for BTS and LMU during pre and post migration.
 Created TDOA requirement documents for network optimization such as BSC re-home to MGW.
 Redeployed network equipment to anchor locations.
 Captured LMU and Non-LMU sites in the TDOA WLS system for each BSC.
 Planned SMLC capacity for migration of BSC from one WLS to another.
 Built configurations and updated customer input files in SCOUT for every phase of BSC re-homes.
 Built and verified the Lb SS7 link and SIGTRAN in SCOUT for new BSC installation.
 Verified the operational status of LMUs pre and post collapse.
 Built configurations to delete all LMU sites from the original WLS configuration.
TruePosition. Baton Rouge,LA
Field Test Engineer (01/2006 – 4/2007)
 Responsible for implementing and live testing of the field deployed WLS (Wireless Location System), E-
911 System for Cingular Wireless.
 Provided technical support for network redesign and re-home of WLS system.
 Created and ran scripts in a UNIXenvironment to test the status and connectivity of the network.
 Monitored, maintained, and provisioned the entire GSM Wireless Location System network from cell sites
through MSC (Mobile Switching Center) including WLG (Wireless Location Gateway),SMLC (Serving
Mobile Location Center), EMS (Element Management System), SCOUT (System Configuration and
Optimization Utility Tool).
 Monitored AMS through EMS.
 Diagnosed and rectified equipment faults.
 Interpreted test results for calls measurement accuracy based on time difference of arrival technology and
produced reports in MS Word and Excel to the customer and product support teams.
 Configured and upgraded new software loads into the system.
 Troubleshot sites with onsite Techs to determine problems with equipment, T1 line, or network using built-
in test, T-bird, EMS.
 Managed multiple Techs across multiple markets.
 Performed final execution of the testing includes demonstration of the system with customer personnel.
Samsung Telecommunications America. Richardson, TX 2005 - 2006
Test Engineer
 Responsible for testing new mobile station.
 Participated in design and test plan reviews to ensure accuracy,thoroughness and consistency of design.
 Developed test cases against requirements and functional design.
 Wrote test script for automated test using C-Shell, TCL-TK,and C language in Unix.
 Configured network and database.
 Executed test cases and verified all requirements were met.

3.  Interpreted test results and generated test reports to manager and customer.
 Diagnosed and addressed equipment faults.
 Collected data, opened, tracked the trouble tickets.
 Analyzed discrepancies to effectively isolate underlying causes,and worked with design engineers to
facilitate and verify resolutions.
Nortel Networks Richardson, TX
Integration TestEngineer (2000 – 2004)
UMTS System Testing:
 Performed end to end testing from mobile station, NodeB, RNC (Radio Network Controller), MSC (Mobile
Switching Center), UMG(UMTS Media Gateway),PSTN/another mobile station which uses IU-interface,
Megaco H.248.
 Created test plan,
 Implemented test case scripts in C++.
 Configured and provisioned system data base for MSC/VLR, HLR, and BSC.
 Reported defects and verified software fixes.
 Converted test cases script from GSM 2G to UMTS 3G.
 Upgraded, and maintained UNIXservers and software.
Call Processing Integration and Sanity Testing: (2000-2003)
 Validated requirements and design documentation.
 Created test scenarios for each of the specified requirements.
 Identified testability and risks to schedules.
 Prepared and executed test cases.
 Developed automation test scripts using Perl.
 Evaluated and documented test results.
 Conducted sanity test for each load line.
 Diagnosed and addressed defects.
EDUCATION: Oklahoma State University 12/1995
 Bachelor of Science,Electrical Engineer.
RELOCATION: Willing to relocate and travel.