Server Administration
DHCP
4-9
The 4600 Series IP Telephone sets the indicated system values to the values of the indicated
fields of the DHCPACK message as indicated in Table 4-3.
The remainder of this section describes some common DHCP servers.
Windows NT 4.0 DHCP Server 4
This section contains details on how to verify and configure the DHCP server included in the
Windows NT 4.0 server operating system.
Use Verifying the Installation of the DHCP Server below to verify whether the DHCP server is
installed. If it is not, install the DHCP server. If it is installed, go to the section Initial Configuration
on page 4-9 and the following section.
Verifying the Installation of the DHCP Server 4
Use the following procedure to verify whether the DHCP server is installed.
1. Select Start->Settings->Control Panel.
2. Double-click the Network icon.
3. Verify that Microsoft DHCP Server is listed as one of the Network Services on the Services
Tab.
4. If it is, go to the section Initial Configuration below. If it is not, then install the DHCP server.
Initial Configuration 4
The Windows NT 4.0 DHCP server configuration involves setting up a scope for the IP telephone.
A DHCP scope is essentially a grouping of IP devices (in this case IP telephones) running the
DHCP client service in a subnet. The scope is used to define parameters for each subnet. Each
scope has the following properties:
■A unique subnet mask used to determine the subnet related to a given IP address.
■A scope name assigned by the administrator when the scope is created.
■Lease duration values to be assigned to DHCP clients with dynamic addresses.
Table 4-3. DHCPACK Setting of System Values
System Value Set to
IPADD The yiaddr field.
NETMASK Option #1 (if received).
GIPADD The first four octets of option #3 (if received).
TFTPSRVR The first four octets of the siaddr field.