Mulitple sites STUN

[davidsimcox]

Hi we have 3 sites and each site has 3 phones

Phones are working under STUN and server is hosted in google cloud

Question is for SIP and RTP ports

Can each site have the same sip port or because we are hosing in the cloud will all phones need a different port assinged

For example
Site 1
Sip Port
5065
5066
5067
Site 2
Sip Port
5065
5066
5067
Site 3
Sip Port
5065
5066
5067

We will be adding more remote sites with just one phone if we end up with say 50 sites with 1-3 phones this would extend the port numbers to much? any help would be appreciated

 

[YiannisH_3CX]

Hi @davidsimcox

The ports should be different for each site. The same ports can exist for different sites so your config is fine.
Think of it as a way for the PBX and the firewall to tell phones apart. The PBX will send a request to a public IP and port. Since the public IP is different (different sites) the ports only apply each site.
Hope that makes sense