Cisco Unity Troubleshooting Guide (With Microsoft Exchange), Release 4.0(3)
Appendix: Cisco Unity Services and Their Functions

Table Of Contents

Cisco Unity Services and Their Functions

Behavior of Cisco Unity Services in a Configuration with Exchange 5.5

Behavior of Cisco Unity Services in a Configuration with Exchange 2000 and Exchange 2003


Cisco Unity Services and Their Functions


Cisco Unity Services are the top level components for the diagnostic traces that are used in troubleshooting. When a diagnostic trace is viewed by using the Cisco Unity Diagnostic Tool, the file always contains the Service in the file name immediately following the "diag_". For example, the diagnostic log for the Reports Group will be diag_AvRepDirSvrSvc_YYYYMMDD_HHMMSS_.txt.

Table A-1 Cisco Unity Services 

Service
Function

AvCsGateway

The Gateway service provides a secure interface to the Manager (AvCsMgr) service. It allows external processes to query the state of the Manager, start or stop the Manager, or request internal interfaces to the Manager components (if allowed).

AvCsMgr

The Manager service is the primary Cisco Unity service and the core voice messaging system. It runs the CommServer platform components, provides status on the components, and exposes component interfaces to other internal and external components.

AvCsNodeMgr

The Node Manager service provides the core services for failover. It runs on both the primary and secondary servers, and is responsible for monitoring the status of the servers. It is also responsible for file replication between the servers.

AvDirChangeWriter

The Directory Change Writer service gets messages from the change queue (posted by the AvDSEx55, AvDSAD, and AvDSGlobalCatalog services) and writes them to the Cisco Unity SQL database.

AvDSAD

(Exchange 2000 and Exchange 2003 systems only)

The Active Directory Datastore service monitors the AD for changes in Cisco Unity objects (users, locations, distribution lists, contacts) on domain controllers, and sends notification of the changes to the Change Writer service. This keeps Cisco Unity synchronized with directory changes made in the Cisco Unity Administrator.

AvDSEx55

(Exchange 5.5 systems only)

The Exchange 5.5 Datastore service monitors the Cisco Unity SQL database for changes in Cisco Unity objects (users, locations, distribution lists, contacts) and sends notification of the changes to the Change Writer service. This keeps Cisco Unity synchronized with directory changes made in the Cisco Unity Administrator.

AvDSGlobalCatalog

(Exchange 2000 and Exchange 2003 systems only)

The Global Catalog Datastore service monitors the AD global catalog for changes in Cisco Unity objects (users, locations, distribution lists, contacts) and sends notification of the changes to the Change Writer service. This keeps Cisco Unity synchronized with directory changes made in the Cisco Unity Administrator.

AvGaenSvr

The Event Notification utility service polls the Event log and sends e-mail and/or voice mail notifications according to the Event Properties set in the Event Notification Utility Administrator.


Caution We recommend that you use the Event Monitoring System instead of the Event Notification utility.

AvLic

The Licensing service provides secure licensing information to Cisco Unity and authenticated clients. In addition, it monitors the Cisco Unity SQL database and provides dynamic utilization information of per-seat licensing features.

AvMMProxySvr

The Media Master Proxy server provides client authentication and anonymous access to media and resource interfaces. Available to anyone, this service provides application-level authentication of clients running on any platform. After authenticating, it then exposes interfaces for streaming WAV files over the phone or to a client platform.

AvMsgStoreMonitorSvr

The Message Store Monitor service watches subscriber mailboxes on the Cisco Unity server for new or deleted messages. This service then adds an MWI request to the Notifier Queue to turn the subscriber message waiting indicator (MWI) on or off. When message notification is enabled, this service adds events for message notifications through pager or message delivery.

AvNotifierMgr

The Notifier Manager provides notification for MWIs and event notifications through the Notifier and NotifyQ components.

AvRepDirSvrSvc

The Reports service accepts report requests from the Cisco Unity Administrator, extracts data from log files, and obtains dynamic information from Cisco Unity components such as the DOH and Miu. The Reports service also handles report queuing and canceling.

AvSqlChangeWriter

The SQL Change Writer service monitors the Cisco Unity SQL database and requests the applicable directory service to update the directory as needed.

AvTtsSvr

The Text to Speech service provides a text-to-audio rendering service that is used by the Call Control/Media (Miu) component to play e-mail messages over the phone.

AvUMRSyncSvr

When the message store is not functioning, The Unity Messaging Repository (UMR) service places voice messages left by unidentified callers—an outside caller or a caller from inside the organization calling from a phone that is not associated with a subscriber account (such as a conference room)—in the UnityMTA directory. UMR lets subscribers listen to these messages and gives them to the message store when it begins functioning again.

CsBridgeConnector

The Connector service monitors the UOmni mailbox and synchronizes directory information in both directions between Cisco Unity and an Octel Node (the Bridge).

CsEmsSvc

The Event Monitoring Service polls the Event log and sends e-mail and/or voice mail notifications according to the settings for the events and recipients in the Event Monitoring Service window.


Behavior of Cisco Unity Services in a Configuration with Exchange 5.5

Services that log on with the account that owns the Cisco Unity directory and message store services are listed as logging on as UnitySvc, the suggested Active Directory user logon name.

Table A-2 Behavior of Cisco Unity Services in a Configuration with Exchange 5.5 

Service
Dependencies
Startup Mode
Logs on as
Comments

AvCsGateway

MSSQLSERVER

Automatic

UnitySvc

Critical; must be restarted if stopped.

Starts and stops AvCsMgr.

AvCsMgr

Dialogic System Service, MSSQLSERVER, Telephony

Manual

UnitySvc

Critical; started and stopped by the system tray or the Status Monitor via AvCsGateway.

Can be started only by AvCsGateway; should be stopped by AvCsGateway. If AvCsGateway is started by the Status Monitor, AvCsMgr is also started.

AvCsNodeMgr

(installed only when failover is installed)

Remote Procedure Call (RPC)

Automatic

Account that owns failover service; account must be the same on both servers

For the active server:
Critical; must be restarted if stopped, or failover does not work. If stopped, there is no impact on AvCsMgr, but failover or failback will occur.

For the inactive server:
Not critical. If stopped, there is no impact on AvCsMgr.

AvDirChangeWriter

Message Queuing, MSSQLSERVER

Automatic

Local system account (account that owns failover service; needs access to SQL)

Critical, must be restarted if stopped.

If stopped, there is no impact on AvCsMgr, but it cannot take changes from AD and place them into SQL.

AvDSEx55

Message Queuing, Microsoft Exchange Directory, MSSQLSERVER

Automatic

UnitySvc

Critical, must be restarted if stopped.

If stopped, there is no impact on AvCsMgr, but it cannot take changes from AD and place them into SQL.

AvGaenSvr

None

Automatic

UnitySvc

Not critical.

If stopped, there is no impact on AvCsMgr.

AvLic

MSSQLSERVER

Automatic

Local system account

 

AvMMProxySvr

Remote Procedure Call (RPC)

Automatic

Local system account

Critical; used by web applications and e-mail clients.

AvMsgStoreMonitorSvr

None

Manual

UnitySvc

Critical; used for message notification and MWIs.

AvNotifierMgr

None

Manual

UnitySvc

Critical; used for message notification and MWIs.

AvRepDirSvrSvc

MSSQLSERVER

Manual

Local system account

Not critical; can be disabled if reports are not used; AvCsMgr starts Reports during startup if Reports is not already running.

If stopped, there is no impact on AvCsMgr, but it can be disabled if reports are not used.

AvSqlChangeWriter

MSSQLSERVER

Automatic

Local system account

 

AvTtsSvr

None

Manual

Local system account

Not critical.

AvUMRSyncSvr

MSSQLSERVER

Manual

UnitySvc

Critical; must be restarted if stopped; AvCsMgr starts UMR during startup if UMR is not already running.

If stopped, there is no impact on AvCsMgr, but cannot store messages if the Exchange server is down; must be restarted if stopped.

CsBridgeConnector

(always installed, but started only if the Bridge is licensed)

MSSQLSERVER

Manual

UnitySvc

Not critical; can be disabled if the Bridge is not used; does not start if no Bridge ports are licensed.

If stopped, there is no impact on AvCsMgr, but the Bridge does not function.

CsEmsSvc

None

Manual

UnitySvc

Not critical.

If stopped, there is no impact on AvCsMgr.


Behavior of Cisco Unity Services in a Configuration with Exchange 2000 and Exchange 2003

Services that log on with the account that owns the Cisco Unity directory services are listed as logging on as UnityDirSvc. Services that log on with the account the owns Cisco Unity message store services are listed as logging on as UnityMsgStoreSvc. Both are suggested Active Directory user logon names.

Table A-3 Behavior of Cisco Unity Services in a Configuration with Exchange 2000 and Exchange 2003 

Service
Dependencies
Startup Mode
Logs on as
Comments

AvCsGateway

MSSQLSERVER

Automatic

UnityMsgStoreSvc

Critical; must be restarted if stopped.

Starts and stops AvCsMgr.

AvCsMgr

Dialogic System Service, MSSQLSERVER, Telephony

Manual

UnityMsgStoreSvc

Critical; started and stopped by the system tray or the Status Monitor via AvCsGateway.

Can be started only by AvCsGateway; should be stopped by AvCsGateway. If AvCsGateway is started by the Status Monitor, AvCsMgr is also started.

AvCsNodeMgr

(installed only when failover is installed)

Remote Procedure Call (RPC)

Automatic

Account that owns failover service; account must be the same on both servers

For the active server:
Critical; must be restarted if stopped, or failover does not work. If stopped, there is no impact on AvCsMgr, but failover or failback will occur.

For the inactive server:
Not critical. If stopped, there is no impact on AvCsMgr.

AvDirChangeWriter

Message Queuing, MSSQLSERVER

Automatic

Local system account

Critical, must be restarted if stopped.

If stopped, there is no impact on AvCsMgr, but it cannot take changes from AD and place them into SQL.

AvDSAD

Message Queuing, MSSQLSERVER

Automatic

UnityDirSvc

Critical; must be restarted if stopped.

If stopped, there is no impact on AvCsMgr, but cannot write to or read from AD.

AvDSGlobalCatalog

Message Queuing, MSSQLSERVER

Automatic

UnityDirSvc

Critical; must be restarted if stopped.

If stopped, there is no impact on AvCsMgr, but cannot read from global catalog.

AvGaenSvr

None

Disabled

UnityMsgStoreSvc

Not critical.

If stopped, there is no impact on AvCsMgr.

AvLic

MSSQLSERVER

Automatic

Local system account

 

AvMMProxySvr

Remote Procedure Call (RPC)

Automatic

Local system account

Critical; used by web applications and e-mail clients.

AvMsgStoreMonitorSvr

None

Manual

UnityMsgStoreSvc

Critical; used for message notification and MWIs.

AvNotifierMgr

None

Manual

UnityMsgStoreSvc

Critical; used for message notification and MWIs.

AvRepDirSvrSvc

MSSQLSERVER

Manual

Local system account

Not critical; can be disabled if reports are not used; AvCsMgr starts Reports during startup if Reports is not already running.

If stopped, there is no impact on AvCsMgr, but it can be disabled if reports are not used.

AvSqlChangeWriter

MSSQLSERVER

Automatic

Local system account

Runs during the MSCW bulk synchronization of all SQL and AD data. It may also run at other times.

AvTtsSvr

None

Manual

Local system account

Not critical.

AvUMRSyncSvr

MSSQLSERVER

Manual

UnityMsgStoreSvc

Critical; must be restarted if stopped; AvCsMgr starts UMR during startup if UMR is not already running.

If stopped, there is no impact on AvCsMgr, but cannot store messages if the Exchange server is down; must be restarted if stopped.

CsBridgeConnector

(always installed, but started only if the Bridge is licensed)

MSSQLSERVER

Manual

UnityMsgStoreSvc

Not critical; can be disabled if the Bridge is not used; does not start if no Bridge ports are licensed.

If stopped, there is no impact on AvCsMgr, but the Bridge does not function.

CsEmsSvc

None

Manual

UnitySvc

Not critical.

If stopped, there is no impact on AvCsMgr.