We had query from a customer on how to disable video and voice on Windows Messenger via SIP to Live Communications Server - Details below: -

Here are our Registry Keys that we use.

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::===============   REGISTRY ENTRY POINTS   ==================

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              RegKey_C=HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Messenger\Client

          RegKey_C_Key=DisableCollaborationApps

         RegKey_C_Desc=Disable Collab [0=Enable, 1=Disable]              :

     RegKey_C_FullDesc=Disables Access to AppSharing and Whiteboard, And Autodeclines the invites

         RegKey_C_Type=REG_DWORD

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              RegKey_D=HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Messenger\Client

          RegKey_D_Key=DisableFileTransfer

         RegKey_D_Desc=Disable File Transfer [0=Enabled, 1=Disabled]     :

     RegKey_D_FullDesc=Specifeds if File Transfer can be used.

         RegKey_D_Type=REG_DWORD

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              RegKey_E=HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Messenger\Client

          RegKey_E_Key=DisableInkIM

         RegKey_E_Desc=Disable INK IM [0=Ink Enabled, 1=Ink Disabled]    :

     RegKey_E_FullDesc=Determins if user can send and receive Ink IM.

         RegKey_E_Type=REG_DWORD

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              RegKey_F=HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Messenger\Client

          RegKey_F_Key=DisableNM

         RegKey_F_Desc=Disable NetMeeting [0=Enabled, 1/Empty=Disabled]  :

     RegKey_F_FullDesc=Disables Access to NetMeeting

         RegKey_F_Type=REG_DWORD

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              RegKey_G=HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Messenger\Client

          RegKey_G_Key=DisablePC2PCAudio

         RegKey_G_Desc=Disable PC2PC Audio [0=Audio Enabled, 1=Disabled] :

     RegKey_G_FullDesc=Specifies if PC to PC audio calls can be made.

         RegKey_G_Type=REG_DWORD

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              RegKey_I=HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Messenger\Client

          RegKey_I_Key=DisableVideo

         RegKey_I_Desc=Disable Video [0=Video Enabled, 1=Disabled]       :

     RegKey_I_FullDesc=Specifies if video calls can be made.

         RegKey_I_Type=REG_DWORD

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Messenger should also respect the Netmeeting settings from GPEdit.exe.