Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Telecom was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 27 days and the median time to publication was 55 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:
| Adrian Pop | Ivo Sousa |
| Alessandro Testa | Jenn-Kaie Lain |
| Alessio Fascista | Jérôme Tissier |
| Alexandru Barsan | Jorge Gallego-Madrid |
| Amaia Arrinda | José Balsa |
| Amir Mohammad Fathollahi-Fard | Khurram Karim Qureshi |
| Angel Marinov | Lamia EL-Garoui |
| Anne Julien-Vergonjanne | Maka Eradze |
| Antonio Oliveira | Makoto Araya |
| Aziz Shah | Maria Del Mar Sanchez-Perez |
| Basel Katt | Massimo Ruo Roch |
| Behrokh Beiranvand | Mehmet Aydin |
| Carla Di Paola | Mircea Hulea |
| Changhyeong Lee | MirHojjat Seyedi |
| Chao Wu | Mladen Amović |
| Chin-Feng Lin | Mohammad Dehghani Soltani |
| Christos-Alexandros Sarros | Mohammed Saleh Ali Muthanna |
| Cong Pu | MuhibUr Rahman |
| Corinna Schmitt | Myrto Kasioumi |
| Dan Neculoiu | Myunghoi Kim |
| Dariusz Litwin | Naresh Kumar Darimireddy |
| Eirini Eleni Tsiropoulou | Oleg G. Morozov |
| Eneko Iradier | Panagiotis Fotaris |
| Fernanda A. Ferreira | Pankaj Singh |
| Filippo Costa | Pavel Fiala |
| Geetika Aggarwal | Rainer Kronberger |
| Georgios A. Kyriakou | Siek Liter |
| Ghaith Khalil | Stavros Koulouridis |
| Grzegorz Karoń | Tuan Anh Nguyen |
| Hiroyuki Endo | Zain-Aldeen A. Rahman |
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