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Hi!
I am trying to do what I thought would be a simple task.I need to open some specific ports for our new phones which use SIP.
I am unable to open any port att all. When I use "Open ports check-tool" or any other online service, it just shows "clos...
The phones we have is called Yealink W52P and use SIP.They are plugged in to our inside network using DHCP to get an internal IP (no separate VLAN).There is a lot of ports to be opened and servers to be reachable (some of them in the attached image)....
