by andrewsherriffs

Does EE 3/4G block port 5090?

We are having issues using a 3CX telephony app over 3/4G, the provider believes this may be because port 5090 is being blocked, as this works over other ISP's. Is there a possibility this is the case?

by Grand Master
Grand Master

Re: Does EE 3/4G block port 5090?

No, EE block no ports other than maybe unauthenticated port 25 SMTP & I'm fairly sure they've stopped doing that since they got rid of their own email.


Have your port forwarded it properly? What router are you using?

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by Ace Contributor
Ace Contributor

Re: Does EE 3/4G block port 5090?

Inbound won't work due to EE using Carrier Grade NAT (CGNAT). Your provider should be able to advise if it would work or not with this limitation.

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