The T3main server is a 32-bit multi-threaded software application implemented in three tiers:

Tier 1
The Core Tier manages all processes and devices in T3main

Telephony engine: a state machine which handles all telephony and fax related issues.

Script engine: determines the flow of the call including playing prompts, taking messages, waiting for entries, and retrieving information from a database. The script engine is customizable on-the-fly and the entire flow of an application, for example voice mail, can be changed to emulate a specific flow.

Database access: SQL/ODBC access to the database engine.

Communication Dynamic Link Library (DLL): a dynamic link library that allows remote clients to connect to T3main for administration and client functionality (call control, mailbox administration).

IP protocols: POP3, IMAP4, LDAP are implemented to allow any email client to retrieve messages from the T3main. With LDAP, T3main can become an extension of a directory services environment (such as Microsoft® Exchange® / Microsoft® NT® server / UNIX server) where users are dynamically retrieved from the directory.

Text-To-Speech (plug-in module): T3main uses ScanSoft® RealSpeak^TM to convert email messages into remarkably natural sounding synthesized speech.

Speech Recognition (plug-in module): T3main utilizes Natural Speech Communication's (NSC) technology to enable highly reliable speech recognition from multiple devices including telephones, cell phones and speaker phones. The NSC speech board resides in the same server as the rest of T3main and does not require additional CPU resources.

Tier 3
The User Interface Tier consists of the interfaces that enable user access to the T3main, such as voice and speech recognition, web-based administration and email client access to messaging. PERFORMANCE AND RELIABILITY

SECURITY
Using specific IP ports T3main can be configured to run behind an internal firewall. It uses all standard Linux security mechanisms as well as internal security and licensing mechanisms.

INTEROPERABILITY
Using standard industry protocols for both telephony as well as email/Internet communication, T3main provides maximum flexibility to connect to any Key System, PBX, central office switch, standard email server or database engine.

RELIABILITY
User data is stored on industry-standard email and database servers allowing service providers to choose their redundancy confuguration to meet required service levels.

SCALABILITY
As your organization and call volume expands, so does T3main. The T3 manages 2 to 120 connections per server, and up to 10 million users / 999 nodes while connecting to any database engine on the LAN/WAN to allow for distribution of the load among as many servers as required. T3main can be implemented as a single machine / multi-server where all servers reside on the same physical machine or, for additional processing power, in a fully distributed mode where each server resides on a different machine. The TTS/ASR, database, and telephony servers can all reside in different servers.

HARDWARE
T3main uses Aculab® and Intel® Dialogic® boards, runs on Intel® based machines with the Linux operating system, and can be implemented as an "in-skin" solution (a card that connects directly to the back plane of a PBX). This hardware configuration provides the following benefits:

• Customer-approved server vendors may be used (Dell®, HP®, IBM®, etc.)
• High availability of spare parts
• Worldwide homologation and localization
• Open standards for add-ons (storage, redundancy, monitoring)