RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide
Polycom®, Inc. 596
Volume Control of IVR Messages, Roll Call and Music
The volume of IVR music, and IVR messages and Roll Call is controlled by the following system flags:
●IVR_MUSIC_VOLUME
●IVR_MESSAGE_VOLUME
●IVR_ROLL_CALL_VOLUME

To control the volume of IVR music, Roll Call and messages:

●Modify the values of the System Flags listed in the following table by selecting Setup > System
Configuration.
If these flags do not appear in the System Flags list, they must be manually added. For more information
see System Configuration Flags.
Default IVR Messages
Flag Description
IVR_MUSIC_VOLUME The volume of the IVR music played when a single participant is connected
to the conference varies according to the value of this flag.
Possible value range: 0-10 (Default: 2).
0 – disables playing the music
1 – lowest volume
10 – highest volume
IVR_MESSAGE_VOLUME The volume of IVR messages varies according to the value of this flag.
Possible value range: 0-10 (Default: 2).
0 – disables playing the IVR messages
1 – lowest volume
10 – highest volume
Note:
It is not recommended to disable IVR messages by setting the flag value
to 0.
IVR_ROLL_CALL_VOLUME The volume of the Roll Call varies according to the value of this flag.
Possible value range: 0-10 (Default: 4).
0 – disables playing the Roll Call
1 – lowest volume
10 – highest volume
Note: It is not recommended to disable the Roll Call by setting the flag value
to 0.
The following System Flags do not require an MCU reset:
• IVR_MESSAGE_VOLUME
• IVR_MUSIC_VOLUME
• IVR_ROLL_CALL_VOLUME
For all other flag changes, the MCU must be reset for the modified flag settings (including deletion) to
take effect.