VLAN configuration for Polycom phones with firmware 5.8 and above.
Any Polycom IP Phone, unable to get IP address from DHCP when using VLAN.
Please note that phones are by default set to VLAN ID Fixed 129. It is suggested to use 129 ID on the DHCP VLAN on the router. If you would like to use a different ID please Contact 8x8 Support.