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Senior Test Engineer - Intelligent Networks

Job Title: Senior Test Engineer - Intelligent Networks
Contract Type: Permanent
Location: Hertfordshire, England
Salary: Negotiable
Start Date: ASAP
REF: P/SR/STE/IN_1560870023
Contact Name: Sara Rowe
Contact Email:
Job Published: 4 months ago

Job Description

Senior Test Engineer - Intelligent Networks - Permanent - Hertfordshire

Senior Test Engineer - Intelligent Networks


Good network knowledge for voice calls - how calls route

o Knowledge of MSC, HLR, general network environment.

o What point codes are, GT routing.

Wireshark knowledge or another network protocol analyser essential

o ISUP, BICC for voice calls

o CAMEL to trace IN call routing

o SIP for IMS

o Gsm_map/gsm_sms for location updates if having to trace issues

  • Previous use of HP ALM - Quality centre, which we use to record results, raise defects etc.
  • Writing test cases - often we use previous test case lists but for new phases we write or certainly expand test case list.

Test all sim types:

  • During a test phase we have to test either a variety or all networks, Ericsson Core , NSN , VOLTE and VOWiFi
  • We have to take traces during test phases,

o Always of test calls on Wireshark (network protocol analyser),

o IN counters are taken (unix based),

o For PAYG we also check CDR's

o Sometimes we check MSC CDR's - provide these once we give timestamps

  • We support IT with their testing, sometimes just checking CDR's with them, or making calls for them. They provide test case list and we execute

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