Polycom RealPresence 1500 Administrator's Manual page 818

Manually Added, Modified, Deleted System Flags
Flag
SEND_SIP_BUSY_UPON_
RESOURCE_THRESHOLD
SEND_SRTP_MKI
SEND_WIDE_RES_TO_IP
Polycom®, Inc.
Description
When set to YES, it enables the Collaboration Server to send a busy
notification to a SIP audio endpoint or a SIP device when dialing in to the
Collaboration Server whose audio resource usage exceeded the Port
Usage threshold.
When set to NO, the system does limit the SIP audio endpoint connections
to a certain capacity and will not send a busy notification when the resource
capacity threshold is exceeded.
Default: NO
Enables or disables the inclusion of the MKI field in SRTP packets sent by
the Collaboration Server. Setting the value to NO to disables the inclusion
of the MKI field in SRTP packets sent by the Collaboration Server.
Set this flag to:
• NO
 When all conferences on the RMX will not have MS-Lync clients
participating and will have 3rd party endpoints participating.
 When using endpoints (eg. CounterPath Bria 3.2 Softphone) that
cannot decrypt SRTP-based audio and video streams if the MKI
(Master Key Identifier) field is included in SRTP packets sent by the
Collaboration Server.
This setting is recommended for Maximum Security Environments.
• YES
 When any conferences on the RMX will have both MS-Lync clients
and Polycom endpoints participating.
 Some 3rd party endpoints may be unsuccessful in participating in
conferences with this setting.
Notes:
• This System Flag must be added and set to YES (default) when
Microsoft Office Communicator and Lync Clients are used as they all
support SRTP with MKI.
• The system flag must be added and set to NO when Siemens phones
(Openstage and ODC WE) are used in the environment as they do not
support SRTP with MKI.
• Polycom endpoints function normally regardless of the setting of this
flag.
Default: YES
When set to YES (default), the Collaboration Server sends wide screen
resolution to IP endpoints. Endpoint types that do not support wide screen
resolutions are automatically identified by the Collaboration Server
according to their product type and version and will not receive the wide
resolution even when the flag is set to YES.
When manually added and set to NO, the Collaboration Server does not
send wide screen resolution to all IP endpoints.
Default: YES.
System Configuration Flags
788