3Com 3C10111C - NBX 100 - Modular Exp Base, Руководство по установке, Страница: 159 / 210

Configuring IP Telephony 159
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For the 2101 Basic Telephone, press the Message button:
For detailed instructions on how to use the LUI utility, see the NBX
Administrator’s Guide .
Automatically
Configuring
Telephone IP Settings
When you connect a 3Com Telephone to a network, it searches for a
DHCP server. If the telephone is on the same subnet as the NCP, the
telephone receives the following configuration information from the
NCP:
■
The IP settings (IP address, subnet mask, and default gateway address)
for the telephone to use
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The IP address of the NCP
The telephone then stops searching for a DHCP sever.
If a telephone is on a different subnet than the NCP and a DHCP server
provides IP settings to the telephone, the telephone cannot communicate
with the NCP until it has the NCP IP address. There are two methods of
providing the NCP IP address to the telephone:
■
Manually configure the NCP IP address into the telephone using the
telephone LUI utility. See
“Manually Configuring Telephone IP
Settings” on page 157 .
■
Provide the IP address to the telephone using DHCP option 184. For an
example of how to configure option 184 on a DHCP server, see
Appendix C, “Configuring Option 184 on a Windows 2000 DHCP
Server,” in the
NBX Administrator’s Guide.
The methods for configuring special options vary depending on the DHCP
server, and the example in the NBX Administrator’s Guide may not apply
directly to your DHCP server. For assistance, contact your network
administrator, the vendor of the DHCP server, or a qualified 3Com service
representative.
Configuring Analog
Line Card Ports
Typically, your analog line card ports reside on the same subnetwork as
the NCP. If you use IP On-the-Fly, or if you use Standard IP with DHCP, IP
configuration is automatic. Verify that your server has enough addresses.
However, if you are using Standard IP without DHCP, you must manually
configure the IP settings for each line card port.