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Chapter 20-System Configuration Flags
Polycom, Inc. 20-29
SEND_SRTP_MKI 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
SEND_WIDE_RES_TO_IP 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.
SET_DTMF_SOURCE_DIFF
_IN_SEC
If the ACCEPT_VOIP_DTMF_TYPE flag is set to 0 (Auto) this
flag determines the interval, in seconds after which the
Collaboration Server will accept both DTMF tones (inband)
and digits (outband).
Default: 120
Table 20-2 Manually Added System Flags – MCMS_PARAMETERS (Continued)
Flag Description