Just to be clear, your phones are working fine? The phones will still need to have the propriety DHCP options 242 and 176 configured on the DHCP server.
Here is a basic EXOS configuration for the VOIP phone
1. Configure VLAN
- create vlan "VOIP"
- configure vlan "VOIP" tag 20
- configure vlan "VOIP" add ports tagged
2. Configure LLDP on the Port
- configure lldp port 1:1 advertise vendor-specific dot1 vlan-name
- configure lldp port 1:1 advertise vendor-specific avaya-extreme call-server 0.58.196.179
- configure lldp port 1:1 advertise vendor-specific avaya-extreme file-server 10.58.196.177
- configure lldp port 1:1 advertise vendor-specific avaya-extreme dot1q-framing tagged
- configure lldp port 1:1 advertise vendor-specific med capabilities
3. Enable LLDP on the port