Avaya Communication Server 1000 E is a robust and highly scalable IP Private Branch eXchange (PBX) that supports traditional Meridian features as well as new IP telephony features, including SIP.

With the CS 1000E, customers can evolve from a traditional Time Division Multiplexing (TDM) network to a converged IP network. Deployment is seamless because the CS 1000E integrates with existing PBX systems from Avaya and third parties. This deployment enables customers to expand the size and functionality of their networks while preserving their investment in legacy equipment, such as Meridian 1, Option 11C, and Communication Server 1000 systems.

Being IP-based, CS 1000E supports distributed architecture. With the distributed architecture, the customer can place the systems and components where they can be fit best. For example, using the Branch Office feature, customers can set up Branch Office Media Gateways (MG 1000B) in remote sites to extend the complete feature set across various geographic locations across the globe. Customers can also configure the CS 1000E to support Campus Redundancy and Geographic Redundancy to increase system availability.

The CS 1000E provides the same business-grade availability, security, reliability, and scalability as the other Enterprise solutions of Avaya.