Solved keep alive in 3cx

[Huseyn_17]

What is and what can be reason to enable keep alive function in settings > network > firewall ?

Thank you.

 

[Alphabetic]

Its normally used to keep NAT port mappings alive. Not really required if you've set up your static mappings correectly.

https://www.rfc-editor.org/info/rfc6263

enable applications using the Real-time Transport Protocol (RTP) and the RTP Control Protocol (RTCP) to keep their RTP Network Address Translator (NAT) mappings alive.

 

[ChrisC_3CX]

Specifically it will have your PBX send a few UDP packets from its SIP Port to the SIP providers every so many seconds. As @kieferschild mentioned though, it should not be required if the firewall is configured correctly.

 

[Huseyn_17]

Thank you!

 

[ChrisC_3CX]

You're very welcome! Feel free to start a new thread should you need anything else!