Unified Messenging server
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The Microsoft Exchange Unified Messaging service enables voice and fax messages to be stored in an Exchange 2007 mailbox and gives users telephone access to e-mail, voice mail, calendar, and contacts.
Telephony components and Exchange Server 2007 Unified Messaging
Telephone terms:
A PBX device enables many internal users to share one or more external telephone lines. A PBX is a much less expensive solution than giving each user in a business a dedicated external telephone line. Internal business calls made to external telephone numbers by using a PBX are made by dialing 9 or 0 in some systems followed by the external number. An outgoing trunk line is automatically selected to complete the call. Conversely, the calls placed between users within the business do not ordinarily require special dialing digits or use of an external trunk line. This is because the internal calls are routed or switched by the PBX between telephones that are physically connected to the PBX.
An IP gateway device connects a legacy PBX to your LAN. The IP gateway lets the Legacy PBX system communicate with your Exchange 2007 Unified Messaging server.
If the IP PBX is used in your network, there is no need for IP gateway.
A telephony dial plan is configured on a legacy PBX or IP PBX.
At least one UM dial plan must be created and the UM dial plan has a UM server and a UM IP gateway associated with it.
A UM dial plan linkes a UM IP gateway, a UM hunt group, and a Unified Messaging server.
New-UMDialplan -Name "vanarts" -NumberofDigits 3
When you configure a subscriber access number (-AccessTelephoneNumbers) on a dial plan, UM-enabled users can call in to the subscriber access number, log on to their Exchange 2007 mailbox, and access their e-mail, voice mail, calendar, and personal contact information.
Set-UMDialPlan -identity vanarts -AccessTelephoneNumbers 4255551234
Set-UmServer -id test1 -DialPlans "vanarts"
New-UMIPGateway -Name VanartsIPGateway -Address 191.121.11.1
A UM hunt group linkes incoming calls to a specific UM dial plan.
New-UMHuntGroup -Name VanartsHuntGroup -PilotIdentifier 4255551234 -UMDialplan Vanarts -UMIPGateway VanartsIPGateway
-PilotIdentifier paramenter uniquely identifies the pilot access number for the specified IP gateway. This number must match the subscriber access number (-AccessTelephoneNumbers) that is configured in the UM dial plan.
set-user "Shane Williams" -Phone 111
Enable-UMMailbox -id "Shane Williams" -UMMailboxPolicy "vanarts Default Policy"
get-ummailbox "Shane Williams" | FL Name,Extensions,UMMail*
Name : Shane Williams
Extensions : {111}
UMMailboxPolicy : vanarts Default Policy
Domain member will see the Voice Mail tab in Outlook 2007. The Voice Mail tab will be grayed out when the computer is not a member of domain.
Hunt Group
In a telephony network a hunt group is defined as a set of extension numbers that are grouped as a single logical unit. When an incoming call is received, the PBX or IP PBX uses the hunt group or group of extensions that are defined to "hunt" for an available or open line, extension, or channel that can be used to receive the call.
Pilot Number
In a telephony network, a PBX or IP PBX can be configured to have a single hunt group or multiple hunt groups. Each hunt group that is created on a PBX or IP PBX must have an associated pilot number. The PBX or IP PBX uses the pilot number to locate the hunt group and in turn to locate the telephone extension number on which the incoming call was received.
The PBX or IP PBX pilot number, when it is used with Exchange Server 2007 Unified Messaging, is used as the target. When an incoming call is unanswered or the line is busy, the call is correctly routed to an Exchange Server 2007 Unified Messaging server.
Unified Messaging hunt groups are used to locate the PBX or IP PBX hunt group from which the incoming call was received. A pilot number that is defined for a hunt group in the PBX or IP PBX must also be defined within the UM Hunt group.