Avaya 555-245-600 manual Avaya Communication Manager, Media Gateways and Port Networks

Components needed for Greenfield deployment

Avaya Communication Manager

Communication Manager IP capabilities and applications support voice over an IP network, and ensure that remote workers have access to communication system features from their PCs. Communication Manager also provides standards-based control between servers and Media Gateways, which allows the communications infrastructure to be distributed to the edge of the network. The Communication Manager IP engine offers features that enable users to increase the quality of voice communications. Quality of Service (QoS) features enable users to optimize voice quality by assisting some routers in prioritizing audio traffic. Communication Manager Media Processors allow for hairpinning and shuffling. These features make voice communications more efficient by reducing both per-port costs and IP bandwidth usage. Avaya IP Telephony Solutions support trunks, IP communications devices, IP Port Networks, and IP control for Media Gateways.

Avaya IP Telephony Solutions are implemented using various IP Media Processor circuit packs inside the Avaya Media Gateways. The IP Media Processors provide H.323 trunk connections, and H.323 voice processing for IP Telephones. H.323 signaling is handled by a C-LAN circuit pack or native processor Ethernet connectivity. The IP network can be extended across geographically disparate locations. With Communication Manager ISDN, Distributed Communication Services (DCS+), or QSIG services, Communication Manager can extend feature transparency, centralized voice mail, centralized attendant service, call center applications, and enhanced call routing across IP trunks.

For more information on Communication Manager architecture, see the Call processing chapter.

Media Gateways and Port Networks

Avaya Media Gateways support voice and signaling traffic that is routed between circuit-switched networks and packet-switched networks. Avaya Media Gateways support all the applications and the adjuncts that are supported by the Avaya DEFINITY Enterprise Communications Servers, accommodating Call Center and Customer Relationship Management applications, messaging, remote workers, and remote offices. Avaya Media Gateways work with standards-based IP networks, and connect easily with the Public Switched Telephone Network (PSTN). The IP network infrastructure provides support for the communication between the servers and the Media Gateways.

In a Greenfield installation, the recommended gateways are the G150, G250, G350, G650, and the G700. The G650 houses traditional circuit switch boards and boards that support IP Telephony. The G700, G350, and G250 house Avaya Media Modules that provide ports for non-IP endpoints, including analog and DCP telephones. Use the G150 and the G250 gateways for large scale, small-branch deployments (2-8 users each). Avaya recommends using the G250 for high-intensity, critical applications, and using the G150 for more affordable solutions where branches are more loosely coupled to headquarters.

Issue 6 January 2008 111