At the heart of the Avaya IP Telephony portfolio is Communications Manager software. The Communication Manager delivers hundreds of individual communications capabilities, making it one of the most powerful and feature-laden communication solutions available today.
Avaya Communication Manager effectively scales from less than 100 users to as many as 36,000 on a single system. Designed to run on a variety of Linux-based media servers, Avaya Communication Manager provides centralized call control for a resilient, distributed network of media gateways and a wide range of analog, digital and IP-based communication devices. It also has several advanced applications built-in, including mobility, call centre features and advanced conference calling.

Avaya Communication Manager comes with the following optional components:

Avaya Call Centre Solutions
Helps agents handle calls more effectively with proven and innovative call routing and resource selection capabilities.

Avaya Enterprise Survivable Server (ESS)
Enables a customer to place ESS (backup) servers at key locations throughout their enterprise to ensure the business continuity of their operations.

Avaya Computer Telephony (CTI)
CTI server software that integrates voice and data between the customer's Communication Manager Server and their business application environment on a Windows server.

Avaya Extension to Cellular - EC 500
Transparently bridges calls received by an Avaya Communications Server to any digital mobile phone regardless of location or wireless service provider, so employees can remain productive in and out of the office.

Avaya IP Softphone
Makes it easy to place and receive phone calls from the laptop or PC.