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[This is pre-release documentation and subject to change in future releases. This topic's current status is: Milestone-Ready]

Topic Last Modified: 2010-07-08

The following Microsoft Communications Server 2010 components are used for dial-in conferencing:

• Application service: Application service provides a platform for deploying, hosting, and managing unified communications applications. Dial-in conferencing uses two unified communications applications that require Application service: Conferencing Attendant and Conferencing Announcement. Application service is installed and activated by default on every Front End Server in an Enterprise pool and on every Standard Edition server when you deploy a Conferencing workload and select the dial-in conferencing option.
  
  
• Conferencing Attendant application : Conferencing Attendant is a unified communications application that accepts public switched telephone network (PSTN) calls, plays prompts, and joins the calls to an A/V conference. Conferencing Attendant is installed and activated by default when you deploy a Conferencing workload and select the dial-in conferencing option.
  
  
• Conferencing Announcement application : Conferencing Announcement is a unified communications application that plays tones and prompts to PSTN participants on certain actions, such as when participants join or leave a conference, participants are muted or unmuted, someone enters the conference lobby, or the conference is locked or unlocked. Conferencing Announcement also supports DTMF commands from the phone keypad. Conferencing Announcement is automatically installed and activated by default when you deploy a Conferencing workload and select the dial-in conferencing option.
  
  
• Dial-in Conferencing Settings Web page: The Dial-in Conferencing Settings Web page displays conference dial-in numbers with their available languages, assigned conference information (for meetings that do not need to be scheduled), and in-conference DTMF controls, and supports management of PIN and assigned conferencing information. The Dial-in Conferencing Settings Web page is automatically installed as part of Web Services.
  
  
• Communications Server 2010 Mediation Server and PSTN gateway: Dial-in conferencing requires a Mediation Server to translate signaling (and media, in some configurations) between Communications Server and the PSTN gateway, and a PSTN gateway to translate signaling and media between the Mediation Server and the PSTN. For dial-in conferencing, you must deploy at least one Mediation Server and at least one of the following:
  
  
  • An IP-PSTN gateway
    
    
  • An IP-PBX
    
    
  • A Session Border Controller for an Internet telephony service provider to which you connect by configuring a SIP trunk
    
    

  Note:
  If you are also deploying Enterprise Voice, Mediation Servers and PSTN gateways are part of the Enterprise Voice deployment. If you are not deploying Enterprise Voice, you need to deploy at least one Mediation Server and at least one PSTN gateway for dial-in conferencing.

• File Store: File Store is used for recorded name audio files. File Store is a standard component in every Enterprise Edition or Standard Edition deployment.
  
  
• User database: User database is used to store user Communications Server 2010 PINs. PINs are encrypted. The User database is a standard component in every Enterprise Edition or Standard Edition deployment.
  
  
• Communications Server Control Panel : Some dial-in settings can be configured by using Communications Server Control Panel.
  
  
• Communications Server Management Shell : All dial-in settings can be configured by using Communications Server Management Shell cmdlets. Communications Server Management Shell cmdlets are available for deploying, configuring, running, monitoring, and troubleshooting Conferencing Attendant and Conferencing Announcement. For details about specific cmdlets, see Communications Server Management Shell documentation.