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In your case it is vlan 5. The phone now receives an IP address on vlan 5 and the additional option. The difference now is that option has different information for the phone In your case: So basically these additional options tell the phone where to pull down its config from and what call server to register with. These options are probably used on many other phones. Here is a doc that will help you maybe: Do you know if they mark the traffic automatically.
Yes you can configure those options on the windows DHCP server. Are you moving to NEC from Avaya? The DHCP settings are specific to the phone manufacturer. They all do different things. Also, some phones have different methods of getting their vlan.
Cisco using CDP but this only works with Cisco phones. So you will really need to find out from NEC the specifics for how the phone gets its information. If you can use LLDP the phone only needs to boot up in the voice vlan. It all depends on the phone. NEC phones use But I am not sure if they mark the packet with dscp or cos. That would be a question for NEC, however, you could have the switch mark the traffic on the ingress port. I assume that the phone marks the packet and my switch just trust dscp or cos.
That's how the Cisco phone works. I would assume the same thing.. I do know several years ago that one of the manufacturers did not have their stuff marked but that was a long time ago. Question has a verified solution. Sign up with Google. Sign up with LinkedIn.