Telephony Modem Tester

4 days ago

Mountain View, United States HCLTech Full time

HCLTech is looking to hire a Telephony Modem Tester for an ongoing engagement with our client who is the largest Online Search Platform Company.


Role and Responsibilities


  • Understanding of 5GNR/LTE/UMTS 3GPP Air interface specifications. Network Carrier Testing Experience, LTE, 5G-NR protocol knowledge at UE side (L1/L2/L3)
  • Hands-on experience and knowledge of 3GPP (UMTS & LTE) Layer 2 and Layer 3 protocol and call processing
  • IMS/VoLTE Experience is a must
  • Must have knowledge of 3GPP IMS core standards. Network Carrier Testing Experience, LTE, 5G-NR protocol knowledge at UE side (L1/L2/L3)
  • Good at Debugging and root causing the issues
  • Exposure to commercial test simulators and test systems such as: Keysight, R&S, Spirent and Anritsu for wireless telephony product verification
  • Familiarity with RF testing, test hardware, mobile phone testing including hardware and android software
  • Nice to have test automation and python scripting skill
  • Good understanding of 3GPP2 CDMA and 3GPP 5G/4G/3G/2G systems
  • Good understanding of Telephony and protocol stack service
  • Knowledge of QXDM logs and ADB Commands (must)

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