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Recently, there has been a flurry of articles in the press, on Twitter, and on LinkedIn touting the advantages of Push-To-Talk over Broadband (PTT over LTE) and stressing that PTT over broadband is ready for primetime, which appears to be true with a few caveats. It is also true that multiple FirstNet-Certified broadband PTT applications are available, including three that currently interoperate with each other. However, there is no requirement for all PTT solutions to interoperate with one another, therefore it is unlikely we will see complete inter-vendor interoperability anytime soon…
