TLS enable

  1. use certificate management to install “Let’s encrypt” TLS certificate (or any other)
  2. set enable TLS = yes in SIP advanced settings
  3. indicate the certificate manager from #1 and use method sslv2
  4. in the SIP extension set TLS and encryption and you should be good to go.
    Zoiper is a bit of a challenge as it does not handle TLS very well but if you play with the settings (in Zoiper) you should be able to get it to work.
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