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• Documented in: http://track.sipfoundry.org/browse/XCF-2415
• MOH Setting not set by default.
• MWI Setting not set by default.
• Phone User not set
  Useful Links
• Configuring MOH and MWI settings for Linksys SPA phones

Workarounds

MWI Setting

• Go into the Admin -> Advanced -> EXT1 setting on each phone and setting Voice Mail Server to be ext@sip.domain.