As you will probably be able to tell i'm very new to VOIP !!!.
We are implementing a nortel IPT solution on a Cisco switching infrastructure. The user PCwill be connected to the Nortel phone which is then connected to the 4500. I have a couple of questions:
1) The following is taken from the config guide on the 4500 to configure a voice port on the 4500.
switchport voice vlan 2
So vlan 1 carries data traffic and vlan 2 carries voice.
I don't want the data to be carried on vlan 1 so how do i configure a data vlan ? ie if i wanted vlan 10 for data is it just
switchport voice vlan 2
switchport access vlan 10
So vlan 2 is for voice and vlan 10 is for data ?
2) The Nortel phones don't use CDP obviously, however they are capable according to their docs of supporting full DHCP configuration. The description given of how this works is
When the phone boots up it broadcasts out for a DHCP address. This is done on the default vlan ?? ie the one configured with the "switchport access vlan xxx" command. (which is part of the reason for question 1). Assuming this is the data vlan when it gets the offer back within the DHCP packet is the vlan ID of the voice vlan. The phone then rejects the DHCP offer and sends a new DHCP request on the voice vlan.
Does this sound right ?. Does anyone have experience of using this and does it work as suggested.
Any help much appreciated
Here is some more info (If you can't get to the 3rd link let me know as you need a Nortel Login);
Like Avaya, Nortel phones do not use the Cisco Discovery Protocol to determine the voice VLAN, but instead relies on configuration information supplied by the DHCP server. When the Nortel phone boots, it displays a test pattern and the speakerphone and message waiting lamps light. The phone requests an IP address (on the native VLAN) from the DHCP server. The server responds with an IP address and a VLAN ID. The phone reboots and requests a new IP address on the voice VLAN by tagging all Ethernet frames with the VLAN ID.
The DHCP server responds with a new IP address and a list of call server (IP PBX) addresses. The phone displays "Locating Server?", connects to the call server, optionally downloads updated firmware and attempts to register. If successful, you will either see a normal phone display or the prompt "Node: xx?" Either one indicates that the phone can communicate with the call server. From a networking perspective, everything is working properly.
From this doc;
Check out this testing;
Have a look at Appendix B;
Hope this helps!