HOWTO: Configure Windows DHCP for Nortel IP telephones
In this example we will configure Windows DHCP for Nortel IP telephones. In addition to your standard Option 003 Router you will also need a custom scope option in order for an Nortel IP phone to boot properly using DHCP.
1. Open the DHCP MMC under Control Panel>Administrative Tools>DHCP
2. Right click on the DHCP server name at the top of the tree on the left side of the screen immediately under “DHCP” and select “Set Predefined Options”.
3. Click on the [Add] button.
4. Under Name enter “Call Server Information” and select a Data type of “String” and a Code of “128” then click [OK].
5. Repeat step 4 above to add option 191. Under Name enter “VOIP-VLAN” and select a Data Type of “String” and a Code of “242” then click [OK].
From this point on things will change if you are using a single VLAN for both Voice and Data or two separate VLANs. I will cover both.
We will assume your Call Server is using the default IP address of 192.168.42.1 (modify to match your actual IP address).
********** If using only a single VLAN for both Voice and Data ********** 1. Expand our your DHCP scope and right click “Scope Options” and select “Configure Options”
2. Scroll down and locate option 128. Under “String value” enter the following:
| Option 128 | Nortel-i2004-A,192.168.42.1:4100,1,5 |
********** If using a separate VLAN for Voice and Data (we will use “4” for the Voice VLAN tag in this example) ********** 1. Expand out your DATA DHCP Scope and right click on “Scope Options” and select “Configure Options”
2. Scroll down and locate option(s) 191. Under “String value” enter the following:
| Option 191 | VLAN-A:4, |
3. Expand out your VOICE DHCP Scope and right click on “Scope Options” select “Configure Options”
2. Scroll down and locate option(s) 128. Under “String value” enter the following:
| Option 128 |
|
|
| Option 191 | VLAN-A:4, |
(NOTE: There are many other values that can be entered under your option 128 )