When CUCM users try to dial or access the VoiceMail pilot on an Exchange 2010 Server, they receive a fast busy. Upon viewing the application events logs on the Exchange 2010 Server, 3 events appear.

Source: MSExchange Unified Messaging

Event ID: 1327

Level: Error

Details:

The Unified Messaging server wasn’t able to retrieve the custom prompt data for the UM dial plan “UCMv9_DialPlan”. Check the dial plan configuration to ensure that all custom prompts have been configured correctly. “Microsoft.Exchange.UM.Prompts.Provisioning.PublishingPointException: An error occurred while accessing the custom prompt publishing point. Cannot open mailbox /o=contoso/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=CONTOSOPDC01/cn=Microsoft System Attendant. —> Microsoft.Exchange.Data.Storage.ConnectionFailedTransientException: Cannot open mailbox /o=TopGun2/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Configuration/cn=Servers/cn=CONTOSOPDC01/cn=Microsoft System Attendant. —> Microsoft.Mapi.MapiExceptionLogonFailed: MapiExceptionLogonFailed: Unable to open message store. (hr=0×80040111, ec=-2147221231)

Diagnostic context:

Lid: 18969   EcDoRpcExt2 called [length=257]

Lid: 27161   EcDoRpcExt2 returned [ec=0x0][length=180][latency=0]

Lid: 23226   — ROP Parse Start —

Lid: 27962   ROP: ropLogon [254]

Lid: 17082   ROP Error: 0×80040111

Lid: 26937

Lid: 21921   StoreEc: 0×80040111

Lid: 27962   ROP: ropExtendedError [250]

Lid: 1494    —- Remote Context Beg —-

Lid: 26426   ROP: ropLogon [254]

Lid: 60049   StoreEc: 0x8004010F

Lid: 49469

Lid: 65341   StoreEc: 0x8004010F

Lid: 56125

Lid: 47933   StoreEc: 0x8004010F

Lid: 32829

Lid: 49213   StoreEc: 0x8004010F

Lid: 48573

Lid: 64957   StoreEc: 0x8004010F

Lid: 59409

Lid: 45073

Lid: 11173   StoreEc: 0×80040111

Lid: 22970

Lid: 8620    StoreEc: 0×80040111

Lid: 1750    —- Remote Context End —-

Lid: 26849

Lid: 21817   ROP Failure: 0×80040111

Lid: 26297

Lid: 16585   StoreEc: 0×80040111

Lid: 32441

Lid: 1706    StoreEc: 0×80040111

Lid: 24761

Lid: 20665   StoreEc: 0×80040111

Lid: 25785

Lid: 29881   StoreEc: 0×80040111

at Microsoft.Mapi.MapiExceptionHelper.ThrowIfError(String message, Int32 hresult, Int32 ec, DiagnosticContext diagCtx)

at Microsoft.Mapi.ExRpcConnection.OpenMsgStore(OpenStoreFlag storeFlags, String mailboxDn, Guid mailboxGuid, Guid mdbGuid, MapiStore msgStorePrivate, String& correctServerDn, ClientIdentityInfo clientIdentityAs, String userDnAs, String applicationId, CultureInfo cultureInfo)

at Microsoft.Mapi.MapiStore.OpenMapiStore(String serverDn, String userDn, String mailboxDn, Guid guidMailbox, Guid guidMdb, String userName, String domainName, String password, String httpProxyServerName, ConnectFlag connectFlags, OpenStoreFlag storeFlags, CultureInfo cultureInfo, Boolean wantRedirect, String& correctServerDN, ClientIdentityInfo clientIdentity, String applicationId)

at Microsoft.Mapi.MapiStore.OpenMailbox(String serverDn, String userDn, String mailboxDn, String userName, String domainName, String password, ConnectFlag connectFlags, OpenStoreFlag storeFlags, CultureInfo cultureInfo, WindowsIdentity windowsIdentity, String applicationId)

at Microsoft.Exchange.Data.Storage.MailboxSession.ForceOpen(MapiStore linkedStore)

— End of inner exception stack trace —

at Microsoft.Exchange.Data.Storage.MailboxSession.ForceOpen(MapiStore linkedStore)

at Microsoft.Exchange.Data.Storage.MailboxSession.Initialize(MapiStore linkedStore, LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags)

at Microsoft.Exchange.Data.Storage.MailboxSession.<>c__DisplayClass12.<CreateMailboxSession>b__10(MailboxSession mailboxSession)

at Microsoft.Exchange.Data.Storage.MailboxSession.InternalCreateMailboxSession(LogonType logonType, ExchangePrincipal owner, CultureInfo cultureInfo, String clientInfoString, Action`1 initializeMailboxSession, InitializeMailboxSessionFailure initializeMailboxSessionFailure)

at Microsoft.Exchange.Data.Storage.MailboxSession.CreateMailboxSession(LogonType logonType, ExchangePrincipal owner, DelegateLogonUser delegateUser, Object identity, OpenMailboxSessionFlags flags, CultureInfo cultureInfo, String clientInfoString, PropertyDefinition[] mailboxProperties, IList`1 foldersToInit)

at Microsoft.Exchange.Data.Storage.MailboxSession.ConfigurableOpen(Exch”.

Source: MSExchange Unified Messaging

Event ID: 1021

Level: Warning

Details:

The Unified Messaging server rejected an incoming call with the ID “ffb50f80-18316a64-a1-f26e0a0a@10.0.0.1″. Reason: “The Unified Messaging server cannot find a valid UM hunt group for “2998″ associated with UM IP gateway “10.0.0.1″.”

Source: MSExchange Unified Messaging

Event ID: 32768

Level: Warning

Details:

The Telephony Manager declined a call with Call Id ‘ffb50f80-18316a64-a1-f26e0a0a@10.0.0.1 for the following reason in component telephony session: ‘The application has requested that the call be declined during media negotiation.’.

Further trace information for support personnel follows:

System.InvalidOperationException: The application has requested that the call be declined during media negotiation.

at Microsoft.SpeechServer.Core.SessionInfo.ApplicationRequiresSecureRtp(RemoteRtpOffer rtpOffer, IPEndPoint mediaEndpoint, IPEndPoint sipPeerEndpoint, CallInfo callInfo, Boolean& receiveRTAudio)

at Microsoft.SpeechServer.Core.TelephonySessionInbound.CreateMediaNegotiation(ContentDescription rtcMediaDescription, SessionInfo sessionInfo, CallInfo callInfo, IPEndPoint sipPeerEndpoint)

at Microsoft.SpeechServer.Core.TelephonySessionInbound.Initialize(SessionInfo sessionInfo, SessionReceivedEventArgs e, CallInfo callInfo, EventSerializer serializer, SpeechSession speechSession, Boolean isTlsConnection)

at Microsoft.SpeechServer.Core.TelephonySessionInbound..ctor(SessionInfo sessionInfo, SessionReceivedEventArgs e, CallInfo callInfo)

at Microsoft.SpeechServer.Core.TelephonyManager.CreateSession(Int32 inviteReceivedTickCount, SessionReceivedEventArgs e)

at Microsoft.SpeechServer.Core.TelephonyManager.SignalingSessionReceived(Object sender, SessionReceivedEventArgs e)

Cause:

The System Mailbox and/or System Attendant User account in Active Directory has been removed or is corrupt. The System Attendant Mailbox is used to publish prompts for Unified Messaging including the default Welcome prompt.

Resolution:

1. Log onto the Exchange Server and open the MGMT Shell.
2. Type into the Shell:

 Remove-Mailbox “SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}” –Arbitration

This command will remove the System Attendant user from Exchange and Active Directory. If the user has already been deleted, you will receive an error in the mgmt shell.

3.   Mount the Exchange 2010 ISO or DVD and re-run the prepare AD switch.

Setup /prepareAD

4.   This will copy files onto the Server, then go through and re-create any system user accounts and    mailboxes that are missing.

5.   Verify the System Attendant user is present in Active Directory. Located under the Users CN

6.   One more step is to enable the SystemMailbox as an Arbitration mailbox.

Enable-Mailbox “SystemMailbox{e0dc1c29-89c3-4034-b678-e6c29d823ed9}” –Arbitration

Try and access VoiceMail again. VoiceMail and AA should be working as per normal.