Global settings for Conferencing Attendant determine the conference call phone numbers available to dial-in conferencing users and the location profiles used to route Conferencing Attendant calls in the forest. Conferencing Attendant global settings include the following:

• Conference access phone numbersdefine how the phone numbers that users dial to access dial-in conferencing map to instances of Conferencing Attendant in the forest.
  
  
• Regionsdefine how conference access phone numbers map to Enterprise Voice location profiles.
  
  

At the pool level, you can configure PSTN conferencing settings for Conferencing Attendant. PSTN conferencing settings specify PIN security and expiration settings for dial-in conferencing users on each pool.

Conferencing Attendant is installed with media files that are used to play a welcome message and prompts to callers. Conferencing Attendant also includes media files that are used to play music while conference participants are on hold.

Conferencing Attendant includes media files for fourteen different languages. By default, the .wma media files are installed to %ProgramFiles%\Microsoft Office Communications Server 2007 R2\Application Host\Applications\Conferencing Attendant\Media\ <language>, where <language>is one of the fourteen supported languages. By default, the media files used to play music to users on hold is installed to %ProgramFiles%\Microsoft Office Communications Server 2007 R2\Application Host\Applications\Conferencing Attendant\Media\music. The files in this folder are played in a repeating loop.

We strongly recommend that you do not replace the default media files. For details, see Microsoft Help and Support at http://go.microsoft.com/fwlink/?LinkId=137269 .