I have a site using Polycom HDX 7000 and due to some recent network changes the Polycom doesn't receive incoming calls anymore.
The connection is described below:
PUBLIC FIX IP IP
MIKROTIK ROUTER CCR1009 (DHCP & NAT)
DRAYTEK 2860 ROUTER (DHCP & NAT)
I am testing the Polycom using VTCTest at 126.96.36.199 and/or 188.8.131.52 and my public IP display correctly.
Outgoing calls are fine.
On the internal router (Draytek) I have open the following ports to linked them to the internal IP of the Polycom.
NAT -> OPEN PORTS
What is the best way to solve and or troubleshoot this issue?