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Provides a summary of the Avaya Enterprise Survivable Servers (ESS) User Guide's content.
Describes the intended audience for this ESS User Guide.
Instructions on how to download the document and access updates from Avaya's website.
Explains the conventions used in the book for typography, commands, and user input.
Lists and discusses Avaya's trademarks and service marks.
Provides contact information for technical support within the United States.
Provides contact information for technical support outside the United States.
Provides methods for users to send comments and feedback about the document.
Explains Avaya's previous survivability options before ESS.
Provides a general overview of the Enterprise Survivable Servers (ESS) functionality.
Offers an in-depth explanation of the ESS architecture and operation.
Describes the process of failing over to an ESS server during an outage.
Lists the essential components and conditions required for an ESS configuration.
Illustrates ESS behavior when the main servers experience failure.
Demonstrates ESS functionality during a network fragmentation event.
Shows ESS behavior in mixed network configurations with CSS and ATM.
Details ESS operation within Center Stage Switch (CSS) environments.
Explains ESS behavior in CSS environments utilizing DS1C connectivity.
Illustrates ESS operation in multi-node Center Stage Switch (CSS) setups.
Describes ESS operation within ATM (Asynchronous Transfer Mode) environments.
Shows ESS operation with multiple ATM nodes in the network.
Explains the integration and operation of Local Survivable Processors (LSP) in ESS.
Outlines strategies for designing and implementing ESS for survivability.
Details the essential requirements and information needed for ESS setup.
Explains the role of CLAN in the ESS server registration process.
Lists the necessary network ports that must be open for ESS functionality.
Discusses handling ISDN PRI trunks with non-facility associated signaling in ESS.
Explains synchronization requirements for DS1 interfaces in ESS environments.
Describes how Inter-Gateway Alternate Routing (IGAR) functions with ESS.
Defines PCOL and its behavior during failover scenarios.
Explains SBS and its implications during failover events.
Covers IP addressing requirements for ESS environments.
Discusses IP connectivity for call control in Avaya solutions with ESS.
Explains how ESS interacts with Center Stage Switch (CSS) environments.
Details ESS interaction within ATM (Asynchronous Transfer Mode) environments.
Describes how IPSI prioritizes ESS servers for failover.
Illustrates the usage of the IPSI priority list with IP connectivity.
Shows priority list application in ATM PNC configurations.
Explains the function and administration of the ESS no service timer.
Details the H.248 link recovery process between servers and gateways.
Describes the H.323 link recovery process for gateways and endpoints.
Details how failover affects announcement availability.
Describes the impact of failover on attendant console functionality.
Explains how failover affects Best Service Routing (BSR).
Details how failover affects Call Classification resources.
Explains how failover impacts call coverage paths.
Describes how failover affects call vectoring routing.
Explains how failover affects Centralized Attendant Service (CAS).
Details how failover affects Crisis Alert calls.
Explains CVLAN link accessibility during failover.
Describes how failover impacts Facility Busy Indication.
Explains how failover affects Hunt Group calls.
Details how failover affects Leave Word Calling messages.
Explains how failover affects Music on Hold.
Explains CDR behavior and data collection during failover.
Describes CMS behavior and data loss during failover.
Explains EC500 service accessibility during failover.
Details PMS interface behavior during network fragmentation.
Explains voice mail system behavior during failover.
Describes voice response system behavior during system fragmentation.
Provides a checklist of tasks for installing ESS.
Explains the importance and types of ESS license files required for installation.
Details the steps for configuring the Main server and ESS servers.
Covers the process of administering ESS using the SAT interface.
Explains how to save and distribute translations to ESS servers.
A table outlining the tasks and documentation for installing ESS with existing servers.
A table outlining the tasks and documentation for installing ESS with new servers.
Details Avaya's requirements for license files for ESS servers.
Explains Module IDs (MID) and Cluster IDs (CLID) in RFA for ESS.
Describes the function and usage of System Identification Numbers (SID) in RFA.
Discusses care needed when replacing reference IPSIs for ESS maintenance.
Details the process of activating ESS functionality using the RFA license file.
Outlines the information required to obtain an RFA license for ESS.
Describes the different license error modes and their impact on ESS servers.
Covers license file requirements for replacing servers in an ESS configuration.
Lists the information required before configuring Main and ESS servers.
Details the preliminary steps required before configuring the servers.
Outlines the actions to perform after the ESS server configuration is complete.
Explains how to administer ESS servers using the SAT on the Main server.
Details the configuration fields in the system-parameters ess form (pages 1-5).
Describes how to assign Port Networks to communities within the ESS form.
Covers the configuration of Auto Return and the no service timer.
Verifies the ESS configuration and administration on the Main server.
An example showing how to check the status of ESS clusters.
Provides general guidelines applicable to all server conversion procedures.
Details the procedure for converting an ESS server to a Main server.
Outlines the procedure for converting a media server to an ESS server.
Provides the procedure for converting a Manual Backup Server to an ESS server.
States that the conversion path from ESS to Manual Backup Server is not supported.
Covers administering and saving translations when running in ESS mode.
Explains how user-enabled features behave during failover to ESS.
Describes the types of alarms generated by the ESS server.
Discusses scenarios of unplanned fall-back to Main or failover to another ESS.
Steps for updating the Main server's software to match ESS servers.
Actions to take after Port Networks fall back to Main server control.
Lists and explains essential maintenance commands for ESS.
Command to disable an ESS server's connection to IPSIs.
Command to enable an ESS server's connection to IPSIs.
Command to manually take control of IPSI Port Networks.
Command to check the status of ESS clusters.
Command to check the status of Port Networks managed by ESS.
Command for managing Control Network C on media servers.
Procedure to lock a CSS to a Port Network during acquisition.
Provides the steps required to remove an ESS server from service.
Describes how to periodically check the status of the ESS server installation.
Provides general advice and information for troubleshooting ESS implementation.
Covers troubleshooting issues related to ESS server registration.
Steps to diagnose and resolve ESS servers not registering with the Main server.
An example of using the list trace ras command for troubleshooting.
Troubleshooting steps for IPSI connectivity issues with ESS servers.
Details the ESS maintenance object (MO) and its monitoring functions.
Provides information on ESS error logs and procedures to clear them.
Procedure to test the transfer of control from Main to ESS server.
Procedure to test the transfer of control from ESS server back to Main server.
Procedure to test the ability to disable an ESS server from the Main server.
Procedure to test the ability to enable an ESS server from the Main server.
Definitions of technical terms used throughout the ESS User Guide.
An alphabetical index of topics and keywords covered in the ESS User Guide.
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