Avaya IP Telephony Guide de configuration télécharger pdf (Page 41)

Chapter 3 Installing IP telephones 41

IP Telephony Configuration Guide

Configuring DHCP

You can use Distributed Host Control Protocol (DHCP) to automatically assign IP addresses to the

IP telephones as an alternative to manually configuring IP addresses for IP telephones. Before

setting up DHCP using the information below, see the Business Communications Manager 2.5

Programming Operations Guide for detailed information about DHCP.

To set up DHCP to work with IP terminals:

1 Ensure that DHCP (under Services) is set up with the following settings:

• Global Options tab: NORTEL IP Terminal Information box is set to:

Nortel-i2004-A, <ip address>:7000,1,250;<ip address>:7000,1,250.

Where

is the published IP address. Be sure to include the period at the

end of the string (1,250.).

• Summary tab: Status box is set to Enabled.

2 Ensure that the DHCP LAN settings are correct (DHCP, Local Scope, LANX, where LANX

is a LAN that contains IP sets that use DHCP):

• Scope Specific Options tab:

Scope Status: Enabled

Default Gateway Field: <Published IP Address>

• Address Range tab: contains the range of IP addresses you need.

3 Restart all existing connected IP telephones.

If the DHCP server is not properly configured with the Published IP address, the telephones will

display

Invalid Server Address

. If this message appears, correct the DHCP settings, and

restart the telephones.

Note: Do not enable DHCP on the Business Communications Manager if you have

another DHCP server on the network. Refer to the Business Communications Manager

2.5 Programming Operations Guide for detailed information about disabling DHCP or

using other types of DHCP.

Note: Whenever changes are made to the DHCP settings, telephones will retain the old

settings until they are restarted.

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Avaya IP Telephony Guide de configuration Page 41