Polycom realpresence 1800 Administrator's Manual page 821

The MCMS System Flags
Flag
PRESERVE_PARTY_CELL_ON_FO
RCE_LAYOUT
PSTN_RINGING_DURATION_SEC
ONDS
QOS_IP_AUDIO
Polycom®, Inc.
Description
Used to prevent reassignment of cells in a forced layout that were
assigned to endpoints that have disconnected, paused their video,
or have been removed from the conference. The cell will remain
black until the endpoint reconnects or a new layout is used, or the
conference ends.
Range: YES / NO
Default: NO
• NO - Cells of dropped endpoints are reassigned. Endpoints that
reconnect will be treated as new endpoints.
• YES - Cells of dropped endpoints are not reassigned, but will be
reserved until the endpoint reconnects.
Forced Layout Guidelines:
• It is recommended that this flag be set to YES if the
Collaboration Server is used primarily for ITP conferences with
MLA.
• When a new forced layout is sent to the MCU, the MCU no
longer preserves the cells for disconnected participants. The
layout is redrawn using the currently connected participants
only.
• If the dropped endpoint was forced to use a particular cell, and
that cell is switched from forced layout to automatically
assigned, the MCU no longer preserves the cell. Any other
endpoint can be assigned that particular cell.
• This feature works the same way in Telepresence conferences,
even where the layouts are controlled by MLA.
If there is a slow response from the ISDN switch, the PSTN
dial-out ringing duration (in seconds) is used by the Collaboration
Server to disconnect the call.
Default: 45
Used to select the Diffserv priority of audio packets when DiffServ
is the is the selected method for packet priority encoding.
For any given DSCP level, the flag must be set to the full 8-bit
hexadecimal value of the DS/TOS byte, which contains the DSCP
level as its upper six bits.
For example, assuming that a DSCP level of 34 decimal is
required: the binary representation of 34 is 0b100010, which,
when placed into the upper six bits of the DS/TOS byte, becomes
0b[100010]00, or 0b1000 1000 = 0x88 hex. Thus the flag value
should be set equal to 0x88.
Default: 0x30
System Configuration Flags
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