| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01309 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.1051/epjconf/202533701309 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701309
Ending the analogue telephony era
CERN, CH-1211, Geneva 23, Switzerland
* Corresponding author: rodrigo.sierra@cern.ch
Published online: 7 October 2025
2024 marks not just CERN’s 70th birthday but also the end of analogue telephony at the laboratory. Traditional phone exchanges and the associated copper cabling cannot deliver 21st-century communication services and a decade-long project to modernize CERN’s telephony infrastructure was completed earlier this year. We report here on CERN’s modern fixed telephony infrastructure, firstly our inhouse development of an exchange which, based on open-source components and standard VoIP protocols, supports softphones, call centres, safety communications, interconnections with other voice services and an automatic switchboard, and secondly the two CERNphone applications that have replaced fixed phones, and which are used by more than 6000 users each week.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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