DHCP Option 176 for Avaya Phone Systems

To configure DHCP Option 176 on a Windows 2000/2K3 Server:

1. Right-click on the DHCP server.
2. Select Predefined options from the pop-up menu.
3. Select Add.
4. Enter the following information: Name: 46xxOptions• Data type: String• Code: 176• Description: IP Phone settings
5. Click OK.
6. In the string value field enter the following: MCIPADD=xxx.xxx.xxx.xxx,MCPORT=1719,TFTPSRVR=yyy.yyy.yyy.yyy,TFTPDIR=zwhere:• xxx.xxx.xxx.xxx is the H323 Gatekeeper address. Normally this isthe IP Office Control Unit's address. yyy.yyy.yyy.yyy is the TFTP Server IP Address. Normally this isthe IP address of the PC running Manager. z is the directory on the TFTP Server where the 4600 Series IPtelephone software files are located. This information is not required if those files are in the TFTP server's default directory, eg.MCIPADD=xxx.xxx.xxx.xxx,MCPORT=1719,TFTPSRVR=yyy.yyy.yyy.yyy You can enter more than one IP address, separating each by a comma with no space. This allows fallback from a primary H323Gatekeeper to a secondary H323 Gatekeeper should access to theprimary fail.MCIPADD=xxx.xxx.xxx.xxx,xxx.xxx.xxx,MCPORT=1719,TFTPSRVR=yyy.yyy.yyy.yyy The maximum string length is 127 characters. To reduce the lengththe TFTP Server address can be specified separately by attachingan Option 66 entry to the Scope, see "Alternate Options" on page 5.
7. Click OK.
8. Expand the server by clicking on the [+] next to it.
9. Click on the scope you just created for the 4600 phones.
10. In the right-hand panel, right-click on the scope and select ScopeOptions.
11. In the general tab make sure 176 is checked.
12. Verify the String value is correct and click OK.