Unified Messaging language packs allow an Exchange 2010 UM server to speak additional languages to callers and recognize other languages when callers use Automatic Speech Recognition (ASR) or when voice messages are transcribed. UM language packs contain:

• Pre-recorded prompts in the language of the UM language pack, for example, "After the tone, please record your message. When you’ve finished recording, hang up, or press the # key for more options."
  
  
• Grammar files in the language of the UM language pack that are used by a UM server to look up the names of users in the directory.
  
  
• Text-to-Speech (TTS) translation so that content, such as e-mail, calendar, and contact information, can be read to callers in the language of the UM language pack.
  
  
• Support for ASR, which allows callers to interact with UM using the voice user interface (VUI) in the language of the UM language pack.
  
  

In addition, UM language packs provide support for Voice Mail Preview, which allows users to quickly triage their voice messages by reading their transcripts from within a supported e-mail client such as Outlook or Outlook Web App.

All UM language packs are single files that can be downloaded. These language packs include the pre-recorded prompts, grammar files, Text-to-Speech (TTS) translation, and ASR. However, not all the UM language packs contain support for Voice Mail Preview.

The following UM language packs contain support for all the components and features, including Voice Mail Preview:

1. English (US) - (en-US)
   
   
2. French (France) - (fr-FR)
   
   
3. Italian - (it-IT)English (Canada) (en-CA)
   
   
4. Polish (pl-PL)
   
   
5. Portuguese (Portugal) (pt-PT)
   
   
6. Spanish (Spain) (es-ES)
   
   

Note:
For more information about Voice Mail Preview, see Voice Mail Preview for End Users

By default, when you install the Exchange 2010 Unified Messaging server role, the server will send voice mail previews to UM-enabled users if a supported UM language pack is installed.

There are Exchange 2010 Unified Messaging Voice Mail Preview partners that offer enhanced transcription support for the Voice Mail Preview feature. These partners employ people to correct voice mail transcriptions that were created using Automatic Speech Recognition (ASR). Each Voice Mail Preview partner must meet a set of requirements to be certified to interoperate with Exchange 2010 Unified Messaging.

If you determine that the voice mail previews sent to your users aren't accurate enough, you can contact one of the certified Voice Mail Preview partners listed on the Microsoft PinPoint web page, and sign up with that partner at an additional cost. For more information, see Voice Mail Preview Advisor for Exchange 2010.

The following table includes the supported languages for Exchange 2010 Unified Messaging.

Supported languages for Exchange 2010 UM language packs

Language	Country/Region	Culture ID	Availability	Prompts	Text-to-Speech	ASR	Voice Mail Preview
Catalan	Spain	ca-ES	Download available	√	√	√
Chinese (Hong Kong)	China	zh-HK	Download available	√	√	√
Chinese (Simplified)	China	zh-CN	Download available	√	√	√
Chinese (Traditional)	Taiwan	zh-TW	Download available	√	√	√
Danish	Denmark	da-DK	Download available	√	√	√
Dutch	Netherlands	nl-NL	Download available	√	√	√
English	Australia	en-AU	Download available	√	√	√
English	Canada	en-CA	Download available	√	√	√	√
English	India	en-IN	Download available Caution: Deploying the Exchange 2010 SP1 English (India) (en-IN) Unified Messaging language pack in organizations that include Exchange Server 2007 servers running on Windows Server 2003 will cause the Exchange 2007 servers to fail. Further details are contained in this Microsoft Knowledge Base article.	√	√	√
English	United Kingdom	en-GB	Download available	√	√	√
English	United States	en-US	Download available	√	√	√	√
Finnish	Finland	fi-FL	Download available	√	√	√
French	Canada	fr-CA	Download available	√	√	√
French	France	fr-FR	Download available	√	√	√	√
German	Germany	de-DE	Download available	√	√	√
Italian	Italy	it-IT	Download available	√	√	√	√
	Japan	ja-JP	Download available	√	√	√
Korean	Korean	ko-KR	Download available	√	√	√
Norwegian (Bokmal)	Norway	nb-NO	Download available	√	√	√
Polish	Poland	pl-PL	Download available	√	√	√	√
Portuguese	Brazil	pt-BR	Download available	√	√	√
Portuguese	Portugal	pt-PT	Download available	√	√	√	√
Russian	Russia	ru-RU	Download available	√	√	√
Spanish	Spain	es-ES	Download available	√	√	√	√
Spanish	Mexico	es-MX	Download available	√	√	√
Swedish	Sweden	sv-SE	Download available	√	√	√

Important:

To ensure that all Unified Messaging features are available in the UM language packs you install, you must install the Exchange 2010 Client and Server Language Pack on each UM server in the dial plan. If you don’t install the Client and Server Language Pack, some features may not work as expected. Some features, like Voice Mail Preview, will work in the language that’s configured on the dial plan but when only the UM language pack is installed. However, features like Outlook Voice Access and user interface text won’t work in the language selected by the user without having both the UM language pack and the Client and Server Language Pack installed. The language pack bundle for Exchange Server 2010 Service Pack 2 (SP2) is integrated into the download for Exchange 2010 SP2. To download SP2 for Exchange 2010, see Microsoft Exchange Server 2010 Service Pack 2 (SP2). However, the language pack bundle for Exchange 2010 SP1 is still available. To download and install additional client and server language packs for Exchange 2010 SP1 on servers in your organization, see the Microsoft Exchange Server 2010 SP1 Language Pack Bundle.

Exchange 2010 UM language packs enable callers and Outlook Voice Access users to interact with the Unified Messaging system in multiple languages. After you install additional language packs on a Unified Messaging server, callers and Outlook Voice Access users can hear e-mail messages and interact with the Unified Messaging system, and Outlook Web App and Outlook 2010 users can view the transcript of a voice message using Voice Mail Preview in a specific language.

To support a specific language, a UM client language pack for that language must be installed on each UM server in the UM dial plan.

In some cases, if a UM language pack for a specific language hasn’t been installed and isn’t available, a client fallback language may be used instead of the language that’s needed. For some languages, fallback UM client languages are available to be used, but for other languages, no fallback language is available. If there isn’t a UM language pack installed for a specific language, and no fallback language is available for that language, en-US (US English) will be used. By default, the en-US UM language pack is installed on all Unified Messaging servers when you install the Unified Messaging server role. The en-US UM language pack can’t be uninstalled.

The following table includes a list of client languages and the fallback languages that are used when a specific UM language pack hasn’t been installed on a Unified Messaging server.

Client Fallback Languages for UM