Polycom RMX 1500 Administrator's Manual page 700

Chapter 19-RMX Administration and Utilities
19-36
Table 19-3 Manually Added System Flags – MCMS_PARAMETERS
Flag and Value
SET_AUDIO_CLARITY
SET_AUDIO_PLC
Description
Audio Clarity improves received audio from
participants connected via low audio
bandwidth connections, by stretching the
fidelity of the narrowband telephone
connection to improve call clarity. The
enhancement is applied to the following low
bandwidth (4kHz) audio algorithms:
• G.729a
•
G.711
•
Guidelines
Note:
This flag sets the initial value for Audio Clarity
during First-time Power-up. Thereafter the
feature is controlled via the New Profile -
Audio Settings dialog box.
Audio Clarity is supported with MPM+ cards
only
Possible Values: ON / OFF
Default: OFF
For more information see "Defining Profiles"
on page 1-9.
Packet Loss Concealment (PLC) for Siren
audio algorithms improves received audio
when packet loss occurs in the network.
The following audio algorithms are supported:
• Siren 7 (mono)
•
Siren 14 (mono/stereo)
•
Siren 22 (mono/stereo)
Note: PLC for Audio is supported with MPM+ /
MPMx cards only. The speaker's endpoint
must use a Siren algorithm for audio
compression.
Possible Values: ON / OFF
Default: ON