Software; Dhcp And File Servers - Avaya 4600 Series Administrator's Manual

Overview of Voice over IP (VoIP) and Network Protocols

Software

As shipped from the factory, the 4600 Series IP Telephones may not contain sufficient software
for registration and operation. When the phone is first plugged in, a software download from a
TFTP or HTTP server starts to give the phone its proper functionality.
For downloads of H.323 software upgrades, the PBX provides the capability for a remote restart
of the 4600 Series IP Telephone. As a consequence of restarting, the phone automatically
restarts reboot procedures. If new software is available on the server, the telephone downloads
it as part of the reboot process.
A 4602, 4602SW, 4610SW, 4620SW, and 4621SW IP Telephone can support either H.323 or
SIP software, but not both at the same time. All telephones come from the factory with H.323
software by default. You can convert a telephone from H.323 to SIP, or from SIP to H.323 by
administering your server and settings file. For more information, see "Converting Software on
Avaya 4600 Series IP Telephones" in the 4600 Series IP Telephone Installation Guide
(Document Number 555-233-128).

DHCP and File Servers

The DHCP server provides the following information to the 4600 Series IP Telephone:
IP Address of the 4600 Series IP Telephone
●
IP Address of the Gatekeeper board on the Avaya Media Server, applicable only to H.323
●
IP telephones
IP Address of the TFTP server if applicable, otherwise the HTTP server
●
The subnet mask
●
IP Address of the router
●
DNS Server IP Address
●
Administer the LAN so each IP telephone can access a DHCP server containing the IP
Addresses and subnet mask listed.
The IP telephone cannot function without an IP Address. The failure of a DHCP server at boot
time leaves all the affected voice terminals unusable. A user can manually assign an IP Address
to an IP telephone. This can cause a problem when the DHCP server finally returns because
the telephone never looks for a DHCP server unless the static IP data is unassigned manually.
In addition, manual entry of IP data is an error-prone process. We therefore strongly
recommend that a DHCP server be available when the IP telephone reboots. If a DHCP server
is not available at remote sites during WAN failures, the IP telephone is not available after a
reboot.
30 4600 Series IP Telephone Release 2.3 LAN Administrator Guide