Avaya 9608 9611 9621 9641 Installing & Administering
The IP Phones use Scope 242 for VLAN tagging if the scope/option has been setup in the firewall/router
Also the data switch (cisco / netgear, etc. ) PORT that the Avaya Office IP is plugged into should be dedicated to that vlan
So if the data vlan is 192.168.1.1
and the voice vlan is 192.168.20.1
The phones will boot automatically looking to use scope/option 242.
First they will boot to the normal lan 192.168.1.1
If scope/option 242 has been setup to vlan tag, the phones will reboot into that vlan subnet (ex; 192.168.20.1)
The Avaya IP Office control unit will be given a static ip of 192.168.20.x and ALSO physically connected to a dedicated port on the data switch for the 192.168.20.x network. The control unit dows not use vlan tagging and/or scopr/option. It is just manually assigned a static ip address & then plugged into a physical port on the data switch to use.