With a greater VCM channel capacity and performance, the Avaya IP Office 500 is the most suitable of the IP Office range for IP Telephony applications. It also provides an entry level offer into the IP Office family through IP Office Standard Edition software. The IP Office 500 also differs from the IP Office 406 V2 by providing a greater trunk expansion capability of up to four PRI interfaces (maximum 96/120 trunks). The IP Office 500 is a stackable unit with an optional 19" rack mounting kit and an optional wall mounting kit for smaller configurations. The Avaya IP Office 500 includes:
By default the IP Office 500 control unit runs a subset of full IP Office functionality called IP Office Standard Edition. In this mode the IP Office 500 is restricted to a maximum of 32 users in the base control unit with no expansion. Embedded Voicemail, Phone Manager Lite/Pro/PC Softphone, SoftConsole, TAPI, SMDR and CBC are supported, as well as SIP trunking (through optional licenses) and IP DECT. IP Office Standard Edition does not support voice networking (H.323 or SCN) or advanced applications (Voicemail Pro, CCC, Conference Center, etc). This restriction can be removed by adding an IP Office Professional Edition Upgrade license to the configuration.
By purchasing the upgrade license from Standard Edition to Professional Edition, additional functionality is enabled. This includes the ability to expand the system using up to eight external Expansion Modules, allowing the IP Office 500 to support a maximum of 272 phones through a mixture of analog, digital or IP handsets. If additional analogue trunks are required, these can be aggregated in groups of 16 on each analog expansion module. Note that the Professional Edition also enables the licensing of advanced applications such as Voicemail Pro.
QSIG, H.323 and SCN capabilities are not enabled by default in the IP Office 500 running Professional Edition. An additional license is required to enable this functionality with 4 simultaneous networking channels (no channel limit for QSIG). Additional channels can then be licensed. The following table shows which features are supported by Standard Edition and which require the upgrade to Professional Edition.

The Avaya IP Office 500 control unit has 4 slots for the insertion of cards. These cards can be divided into two types; base cards and daughter cards. Base cards include a front panel and ports for cable connections. Daughter cards can be added to a base card in order to provide additional facilities (typically trunk connections). The following base cards are available:
This card provides 12 RJ45 ports. The first 8 ports are DS ports for the connection of AVAYA digital phones other than IP phones. The card can be fitted with an IP Office 500 daughter trunk card, which then uses the additional 4 RJ45 ports for trunk connections.
This card provides 2 analog extension ports (1-2) for the connection of analog phones. The card can be fitted with an IP Office 500 daughter trunk card, which then uses the last 4 RJ45 ports (9-12) for trunk connections.
This card provides 8 analog extension ports for the connection of analog phones. The card can be fitted with an IP Office 500 daughter trunk card, which then uses the additional 4 RJ45 ports for trunk connections.
This card provides voice compression channels for use with VoIP calls, SIP trunks and IP-based voice networking. The module is available in variants supporting up to 32 or 64 channels. The actual number of channels provided is controlled by the VCM Channel licenses entered into the IP Office 500 system configuration.
Each VCM card has 4 VCM channels enabled by default. Further channels can be enabled up to the maximum (32 or 64) through adding one or more licenses (available in 4, 8, 16, 28 and 60 channel increments).
The maximum number of voice compression channels supported, using IP Office 500 VCM base cards and / or IP400 VCM cards on IP Office 500 Legacy Card Carriers, is 128. The card can be fitted with an IP Office 500 daughter trunk card, which uses the 4 RJ45 ports for trunk connections.
This card allows a variety of IP400 trunk and VCM cards to be used with the IP Office 500 control unit. The front of the card includes a number of panels that can be snapped off to match the ports available when an IP400 trunk card is fitted.
This card supports the following IP400 cards:
IP Office 500 daughter trunk cards can be fitted to existing IP Office 500 base cards to provide support for trunk ports. The daughter card uses the ports provided on the base card for cable connection. The addition of an IP Office 500 daughter trunk card is supported on IP Office 500 Digital Station, IP Office 500 Analog Phone and IP Office 500 VCM base cards. They are not supported on the Avaya IP Office 500 Legacy Card Carrier base card.
For those base cards that support daughter cards, there are no restrictions on the combination of card types.
However in systems with both analog phone 8 base cards and analog trunk daughter cards, combining the two types are recommended as it then provides analog power failure support for two trunks/extensions. (Not applicable to the Analog Phone 2 base card.) Each daughter card is supplied with the spacer pegs required for installation and a label to identify the cards presence on the physical unit once installed.
This card can be added to an IP Office 500 Digital Station card, IP Office 500 Analog Phone base card, or IP Office 500 VCM card. It allows that card to then also support 4 analog loop-start trunks. It also provides one analog V.32 modem.
This type of card can be added to an IP Office 500 Digital Station card, IP Office 500 Analog Phone card, or IP Office 500 VCM card. It allows that card to then also support up 4 BRI trunk connections, each trunk providing 2B+D digital channels. The card is available in 2 port (4 channels) and 4 port (8 channels) variants.
From IP Office release 4.2 onwards, the ports on IP500 BRI cards can be individually configured to operate as an S-interface (S0 mode). When set as an S interface the settings for the Line will be exactly the same as for a circuit on an So8 Expansion Module.
These trunks support the mobility features of Mobile Call Control and one-X Mobile client support introduced in Release 4.2.
This type of card can be added to an IP500 Digital Station card, IP500 Analog Phone card, or IP500 VCM card. It allows that card to then also support primary rate digital trunk connections. Available in single and dual versions the IP400 PRI card provides single and dual primary rate trunk interfaces respectively. The PRI is configurable for T1, E1 or E1R2 MFC use depending on the territory.
Details of the supported ISDN supplementary services and protocols for each PRI are given in the 'Public and Private Voice Networks' section.
The IP500 Universal PRI trunk cards incorporate an integrated CSU/DSU. The CSU function allows the trunk to be put in loop-back mode for testing purposes. This can be set manually, using the monitor application, or automatically from a Central Office sending a Line Loop Back (LLB) pattern. The DSU function allows the T1 trunk to be shared between data and voice services.
Here is a summary of the capabilities of the card: