The global push-to-talk over cellular (PTToC) market is estimated to be valued at US$ 4.3 Bn in 2021, and register a CAGR of over 11% during the forecast period (2021-2031), with revenues in the public safety and security segment growing at a robust 12.8% CAGR, according to a revised study by Persistence Market Research. Land Mobile Radio (LMR) has been one of the most preferred...