Avaya 555-245-600 manual Evolution from circuit-switched to IP

Evolution from circuit-switched to IP

Overview

The Avaya DEFINITY® Enterprise Communications Server G3r has been the flagship product in the DEFINITY family of communications servers. As technology changed, Avaya was able to leverage the rapid advances in microprocessor technology to increase the capacity and processing power of the traditional DEFINITY platform (Figure 42: Traditional DEFINITY configuration) to benefit our customers.

Figure 42: Traditional DEFINITY configuration

Avaya also has the objective to protect our customers’ communications investment in the Avaya DEFINITY platform by helping our customers leverage their existing investments in Avaya solutions. Upgrading allows a customer to make a smooth transition to IP Telephony technology without sacrificing the features or reliability of their current DEFINITY. A customer can make small incremental investments to move from the circuit-switched world to a full IP PBX while retaining their investment in TDM-based equipment and connections. On the endpoints, moving to IP Telephony allows simplified moves, adds, and changes. It also simplifies the building wiring plan by sharing one Ethernet connection with both the IP Telephone and the desktop PC. It also adds IP mobility while retaining the rich set of DEFINITY features. For both IP Telephone and traditional circuit-switched telephone users, migrating to IP Telephony offers the opportunity to bypass tolls, and route traditionally metered long-distance calls across an unmetered IP network instead, saving operational costs.

Issue 6 January 2008 119