SUMMARY:

• Strong accomplishment involving Engineering & Technical Support of IMS/VoLTE/VoWiFi mobility system integration, certification, validation call flow, problem analysis testing traversing mobility/legacy based core element functions, & logical referenced air interfaces. Proven research tracking & protocol analysis experience involving in depth testing of various fixed/mobility types interfacing and traversing 3G/4Gpp network services and legacy switching entities. Experience in execution of MOPs (i.e. network integration, feature/function activation, etc.) and acceptance test plans validating platform, vendor requirements, & configurations. Proven management & collaboration skills towards certification of various equipment types employing & supporting various signaling/media types, standards, recommendations, and applications. Bring driven, responsible, proactive dedication to company policy, procedures and careful planning. Customer & peer level focused team player who works well independently or collectively with a personal commitment to exceeding expectations and goals.

PROFESSIONAL EXPERIENCE:

Confidential, Birmingham, Alabama

VoLTE/IMS/VoWiFi Core Network Analyst

Engineering support in VNF Cloud Computing supporting LTE/EPC/IMS VoLTE, VoWiFi, PTT (Push to Talk), E911, Voicemail, SMS/MMS, Ericsson OSS - RC, Explorer, Common Explorer, Element Manager, RBS 6000 for e2e integration, conformance, ATP validation, mobility support & transition assistance for ICR (Inter-chassis redundant) geo-site core services for fixed SCADA units servicing power, transmission, distribution, metering facilities, and future mobility customers. Requires provisioning/correlation/ validation of configuration entries integrating iPWorks (iDNS/eDNS/ENUM), MME, HSS, SAPC, EPG, SSR, vSBG, vCSCF, MTASv, DSC, MGCF, MRS, WMG, ePDG, AFG, AAA for mobility service selection & routing capabilities. Utilize NetScout NG1/NSi apps, Wireshark for problem & operational analysis, support for issues resolution between network signaling and session management elements traversing equipment, application services, & referenced logical interfaces (i.e. S1, S1-U, S1AP, S6a, S11, S5/S8, ut, Sh, Cx, Gx, Rx, Swu, Swm, Swx, S2b, S6b, DIAMETER, etc.). Required use of LINUX based interface skills across various platforms/applications.

Confidential, Richardson, Texas

Wireless Engineer

VoLTE pre-launch FFA: End to End (E2E) VoLTE services integration / validation testing. Services include, HD Voice, SMS, Supplementary Services, E911, SRVCC, CSFB, IRAT, Abbreviated Dialing Code, etc. Assigned associate to Joint Ops technical review team collaborating and interworking between cross functional/regional teams (Device, EPC core, IMS core, SS7 core) for Severity 1 & critical problem analysis/assignments/resolution supporting VoLTE/SIP signaling services and/or voice quality (RTP / MOS) issues impacting pre-launch market efforts. Supported scheduled EPC/IMS Core network migrations & rehome maintenance windows performing selective static, mobility, and/or drive QA test efforts validating transit access technologies & VoLTE services. Periodic staff training and/or mentoring sessions. Requires thorough/applicable understanding of LTE/EPC and IMS call flows, reference/air interfaces, network elements (i.e. eNB, MME, HSS, S4-SGSN, SGW, PGW, DIAMETER AVP, DRA, AMG, P-CSCF, S-CSCF, I-CSCF, E-CSCF, SCC-AS, BGW, BGCF, MGW, MGCF, GMLC, PLRF/RDF, MSC, PSAP ALI, E911 LCS, TCS, INTRADO, etc.).

Analysis/Validation tools: JDSU Access7, Tektronix IrisView are used for SS7, UMTS(3G), LTE(4G) and IMS core services/functions, familiarity with mobile equipment (UE) call logs.

Confidential, Irving, Texas

Solutions Integration Engineer

Software installation, configuration, and provisioning of CSCF & HSS server applications in ATCA based server rack supporting IMS/4G LTE networks. Includes software patch maintenance & release updates. Required SIP call flow generation and analysis across SIP & Diameter based referenced endpoints and IMS/SIP AS services validating operational and acceptance test plan execution. Staged software installation via execution of MOPs. Involves familiarity and understanding of Cx, Dh, Dx, Gm, Gx, ISC, Mw, Rf, Rx, and Sh referenced endpoints. Required research & referencing 3GPP & 4G/LTE specifications and technical documentation. Troubleshooting skills required utilizing various protocol analysis tools.

Confidential

Product Support Engineer

Software installation, configuration, and provisioning of Diameter (RFC3588) base application including supporting Diameter routing agents (DRA) and management functional services in 3G IMS/4G LTE next generation networks supporting AAA services for centralized routing, address resolution in Core, Roaming, and OFCS ISP VoIP/VoLTE mobility networks. OTP/ATP execution traversing DSR application interfaces validating system and feature level capabilities. Test/validation/execution of customer specific MOPs required. Responsible for adherence to SAED (Solutions Architecture & Engineering Document), functional design specifications, and applicable solution level test plans in support of customer trial efforts within ISP referenced architecture network(s) such as GSM, UMTS, IMS, and EPC/LTE (3G/4G) environments. Required product evaluation(s) with customer in performing scheduled installations, data collection/analysis, and resolution of customer issues involving vendor service and support groups. Understanding of Diameter call/transaction record AVPs and payload(s). Knowledge of LTE Diameter interfaces and protocols such as S1-MME, S1-U SGW, S6a, S6d, HSS, SGSN, S11, SGW, S5 PGW. Experienced understanding of IMS architecture in validation of IMS call flows and x-CSCF functions as per 3GPP specifications.

Confidential, Austin, Texas

IMS/SIP Software Test Engineer

Performed 3GPP/ALU IMS, 4GPP LTE/SAE, SIP (RFC3261), PSTN call flow interop testing, analysis, problem reporting & resolution of signaling/media flows adherence to technical specifications, standards, & network architectural requirements involving various vendor CPE gateway for FFA, FOT, & AFU deployment strategies. Requires call flow tracking analysis and validations of calls traversing network elements, functions (eNB, MME, HSS, SGW, PGW, PxRF, x-CSCF, DIAMETER, etc.) and operations between applicable 2G/3G/4G & legacy PSTN networks setup within Systems integration, certification, and production support lab environments. Involves UE/CPE element failover correction analysis and reporting involving IMS x-CSCF application functions/servers aligned with network development, planning, & engineering documentation. Reviewed & participated in comprehensive Confidential &T/vendor test plan cycle processes, strategies, & test effort sizing aligned with scheduled IMS network upgrades /modifications and deployed application/software releases. Scheduled/coordinated test cycles in cooperation with vendor CPE hardware & software (GA & maintenance releases). Required multi-tasking and working independently with minimal managerial oversight. Knowledge and experience—IPv4, IPv6, Ethernet LAN, VDSL/ADSL WAN FTTx (i.e. BPON, GPON) node based network elements supporting Confidential &T IMS triple play services transiting Uverse core network elements. Problem management & protocol analysis test tools--Geoprobe/Wireshark Analysis, Tektronix IrisView, Empirix HAMMER Call Analyzer, Agilent Ngn Analysis monitors, & HP Quality Center.