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DHCP is the control point where an enterprise controls its IP Telephones. Before administering DHCP and TFTP, complete the information in Table 4-2 below to ensure that you have the necessary information regarding your network. There may be more than one Gateway, TFTP server, subnet mask and Gatekeeper in your configuration. You will need a copy of this table for each DHCP server.
Release 1.5 of the 4600 Series Telephones supported the ability to specify a list of IP addresses for a gateway/router, TFTP server, and Avaya media server Gatekeeper(s), as explained in Overview of Voice over IP (VoIP). Each list may contain up to 127 total ASCII characters, with IP addresses separated by commas with no intervening spaces.
When specifying IP addresses for the TFTP server or media server, you can use either dotted decimal format (“xxx.xxx.xxx.xxx”) or DNS names to identify the address(es). If you use DNS, note that the system value DOMAIN will be appended to the IP addresses you specify. If DOMAIN is null, the DNS names must be fully qualified, in accordance with IETF RFCs 1034 and 1035. For more specific information about DNS, see DHCP Generic Setup and DNS Addressing.
The TFTP server file path is the “root” directory used for all transfers by the server. This is the default directory all files will be uploaded to or downloaded from. In configurations where the upgrade script and application files are in the default directory, see item 6 in Table 4-2 should not be used.
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