Released in 2007 the Avaya IP Office 500 is the latest VoIP system from Avaya.
If you are looking for a scalable solution for your businesses telecommunication needs then the modular capabilities of the IP Office 500 will allow your phone system to grow as you do. In its 'Standard Edition', entry level format it is capable of supporting up to 32 telephone users with 16 analogue trunks and 4 digital trunks (96 T1/PRI or 120 E1) .
Upgrading to 'Professional Edition' software allows greater capacity with the IP Office 500 able to support 8 expansion modules allowing a combination of 270 analogue, digital, and IP extensions.
Configuring an IP Office 500 to suit your requirements is a simple process with Avaya's software applications. System monitoring and diagnostics are covered via the 'System Status' utility, call tracking by 'SMDR' and general administration through 'Manager'. Other software features that can be applied include 'Phone Manager', a visual utility for employees to manage their own calls and 'Auto Attendant' an application enabling external callers to contact their desired contact through a general number without the requirement of a receptionist.
For full specification on the Avaya IP Office 500 and further documentation please see link below.
IP Office Series
Avaya IP Office 401
Avaya IP Office 403
Avaya IP Office 406
Avaya IP Office 412
Avaya Small Office
IP Office Handsets
Avaya 4602SW Handset
Avaya 4610SW Handset
Avaya 4621SW Handset
Avaya 4622SW Handset
Avaya 4625SW Handset
Avaya 5610 IP Handset
Sabre Telecommunications, 1 Woodingdean Business Park, Sea View, Way, Brighton, BN2 6NX. 

