is there any particular requirements to correctly route VOIP traffic across VLANs?
1. Core LAN 192.168.8.0/24
2. VLAN Staff 10.0.100.0/24
3. VLAN Guest 10.0.200.0/24
4. VLAN PBX 172.16.4.0/24
Intervlan routing is enabled, however
- the PBX set on 172.16.4.10, is registering some (not all) SIP/TLS clients connected to networks 1,2 & 3 with IP address 172.16.4.254, that is the Peplink’s router/gateway IP address;
- phones randomly miss calls
Not sure if something is not configured correctly in the firewall or if any special setting is required. Basically any traffic can be routed to PBX VLAN, whilst traffic initiated from PBX VLAN to Core LAN is being blocked.
PBX Logging facility (red arrows point to wrong client IP address):