There is no special range it’s the same as RTP /b On Fri, Nov 23, 2018 at 7:13 AM Sergey Safarov <s.safarov@gmail.com> wrote:

https://freeswitch.org/confluence/display/FREESWITCH/Firewall

пт, 23 нояб. 2018 г. в 12:53, Kevin Olbrich <ko@sv01.de>:

...

Hi!

Which ports do I need to open to allow T.38? The RTP range can be set but I was unable to find such a setting for T.38.

Asterisk for example needs range 4000:4999.

Kind regards Kevin

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