H323 IP Telephone Installation Page 13

15-601046 Issue 16a (15 March 2010)IP Office Release 6

IP Office H323 IP Phones: Phone Firmware

1.5 Simple Installation
The diagram below shows a simple installation scenario that can be supported by all IP Office systems running IP Office
Release 6.
This type of installation uses the following equipment:
·IP Office
The IP Office control unit is performing a number of roles for the phones:
·DHCP Server
The IP Office unit is acting as the DHCP server for the Avaya IP phones. Key settings such as the file server
address are entered into the IP Office configuration and then provided to the phones in addition to their IP
address.The IP Office DHCP server can be configured to provide DHCP addresses only in response to requests
from Avaya IP phones. This allows an alternate DHCP server to be used for other devices that use DHCP.
·The IP Office control unit can provide DHCP support for up to 272 phones. Alternatively a separate DHCP
server can be used.
·H323 Gatekeeper
IP phones require an H323 gatekeeper to which they register. The gatekeeper then controls connecting calls to
the phone. In this scenario the IP Office control unit acts as the H323 Gatekeeper.
·File Server
During installation the IP phones need to download software and settings files for a file server. If the IP Office
control unit is fitted with a memory card (mandatory on IP500 v2 control units), that card can be used as the
file source.
·The IP Office control unit with memory card can act as the file server for up to 50 phones. Alternatively a
3rd-party HTTP server can be used.
·Switch
The IP Office control units have limited numbers of LAN connection ports. They are intended to be connected to a
LAN switch with port capacity for the customers network equipment.
·Power Supplies
Each H323 IP phone requires a power supply.
·Individual Power Supply Units
An individual power supply unit can be used with each phone. This will require a power supply socket at each
phone location. Note that for phones using a button module add-on, for example a EU24 or BM32, an individual
power supply unit is a requirement.
·Power over Ethernet Supply
Most Avaya IP phones can be powered from an 802.3af Power over Ethernet (PoE) power supply. The IP Office
system does not provide PoE ports so a separate PoE switch or PoE injector devices will be required to power a
phone using PoE.