Peter Karlsson
Verification Engineer at Ericsson
Based in Stockholm, Sweden
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Seniority
Staff
Department
Information Technology
Location
Stockholm
Industry
Telecommunications
Company size
107K
Contact information
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p•••••••@ericsson.com
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Background
About Peter Karlsson
In my 34 years within Ericsson, I have worked with tests and measurements most of the time. Automation of test execution and analysis has always been in mind. The last 12 years, I have worked in the Service Performance area. Starting in 2010, I was in the first team in Ericsson testing VoLTE (Voice on 4G) and supporting Verizon in their first launch. I have developed and documenting methods for measuring Media Quality KPIs, both from internal tests within Ericsson labs, and in operators’ networks. Very good cooperation with Swisscom and TMO. A big portion of my work has been to develop scripts for analyzing and post-processing of test data, mainly in and Python but also in Perl. I have deep knowledge in SIP and RTP, the protocols used for setting up and transporting speech in 4G and 5G networks. During 2023, I developed a device for measuring one-way delay of audio. The device was based on the RP2040 Microcontroller, a GPS module, and a I2S DAC module, and was programmed in the Arduino IDE/ C++.
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