MultiVantage Telephony Applications
- Enterprise Survivable Server (ESS)
The Avaya Enterprise Survivable Server (ESS) solution allows a business that is using an Avaya Communication Manager 3.0 driven solution to have greater flexibility of consolidation by providing new survivability options. The ESS solution allows a customer to place ESS (backup) servers at key locations throughout their enterprise. An ESS server is capable of taking over for the entire enterprise or, if needed, just a portion of the enterprise in the event that some type of outage has occurred.
The ESS solution allows a customer to place ESS (backup) servers at key locations throughout their enterprise. Beginning with Avaya Communication Manager 3.0, an ESS server is capable of taking over for the entire enterprise or, if needed, just a portion of the enterprise in the event that some type of outage has occurred. An enterprise typically involves multiple locations that are equipped with Avaya port network gateways (MCC1, SCC1, CMC, G600 and G650) and/or H.248 media gateways (G700, G350 and G250). These gateways use the Wide Area Network (WAN) in order to communicate with the Main Communication Manager Server. A port network gateway uses a board called the Internet Protocol Server Interface (IPSI) to establish connectivity to the Main server. The IPSI has the ability to "ask for help" if connectivity to the mains server cannot be restored in a defined timeframe. Each IPSI keeps a list of all the available ESS servers in the enterprise. The IPSI will reach out to the ESS server that has the highest priority rating and request service. If that request for service fails, then the IPSI will make a request of the next highest priority server.