Li Chen

Senior Telecom System Engineer at Affirmed Networks
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Contact Information
us****@****om
(386) 825-5501
Location
Dallas-Fort Worth Metroplex
Languages
  • English Professional working proficiency
  • Chinese Native or bilingual proficiency
Skills

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Credentials

  • CCNP
    Cisco

Experience

  • Affirmed Networks
    • United States
    • Wireless Services
    • 1 - 100 Employee
    • Senior Telecom System Engineer
      • 2017 - Present

      Performed Affirmed Networks native cloud based Virtual EPC(ePDG/SAEGW/MME etc.) network deployment, instantiated Affirmed MCC VMs with OpenStack or VMware ESXi OS in HPE C7000 blade server or Dell PowerEdge hardware platform, integrated/troubleshooted vEPC in multi-vendors environment with Cisco or Juniper Backbone, AAA, HSS, eNB, PCRF, DNS, IMS Core etc. Multiple tier 1 carrier deployment experience: ATT, VzW, Tata, Syniverse etc. Performed Affirmed Networks native cloud based Virtual EPC(ePDG/SAEGW/MME etc.) network deployment, instantiated Affirmed MCC VMs with OpenStack or VMware ESXi OS in HPE C7000 blade server or Dell PowerEdge hardware platform, integrated/troubleshooted vEPC in multi-vendors environment with Cisco or Juniper Backbone, AAA, HSS, eNB, PCRF, DNS, IMS Core etc. Multiple tier 1 carrier deployment experience: ATT, VzW, Tata, Syniverse etc.

  • AT&T
    • United States
    • Telecommunications
    • 700 & Above Employee
    • Senior VoLTE/IMS System Engineer
      • 2014 - 2017

      Performed AT&T network End to End VoLTE Market Integration Troubleshooting, hosted troubleshooting bridge with multiple equipment vendors such as Cisco(SPGW), Ericsson(EPC/RAN), ALU(SBC/EPC/RAN) etc., analyzed Hasati drive test reports for Accessibiliy and Retainbility issues, raised JOT ticket against IMS Core (P-CSCF/SBC/S-CSCF/SCC-AS/CTS/TAS), LTE EPC (MME/SGW/PGW/PCRF/DNS) or RAN (eNB) such as SRVCC issue, E911 issue and UE issue etc, used QxDM, Wireshark, JDSU, Tektronix G10 IRIS tool to capture SIP singnaling message flows in IMS Core, LTE EPC(S1AP,S11,S3,S4,Gx etc.) and E-UTRAN. Show less

    • Senior AT&T Lab Test Engineer
      • 2013 - 2014

      Performed AT&T network End to End test, validated network and device behavior based on TOL and raised defects through HP-QC.Worked on multiple VoLTE related projects:• OnStar/Jasper Automotive VoLTE test• Samsung Jade and HTC VoLTE device smoke test• VoLTE SVT test/2G VoLTE test• 4G VoLTE HQ voice quality test• 4G/3G QOS Mapping test• 2nd PLMN/VoLTE Roaming test

Education

  • The University of Dallas
    Master of Business Administration (M.B.A.), Telecommunications Management
    2005 - 2008
  • Fudan University
    Bachelor’s Degree, Electrical, Electronics and Communications Engineering
    1991 - 1996

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