Polycom CX5500 Administrator's Guide

Polycom CX5500 Unified Conference Station Administrator’s Guide 1.1.0
Polycom, Inc. 330
<volume/>
In some countries, regulations state that a phone’s receiver volume must be reset to a nominal level for
each new call. This is the phone’s default behavior. Using the parameters listed in the table Volume
Parameters, you can set the receiver volume to persist across calls each time a user makes changes to
the default volume level.
Volume Parameters
Parameter
Permitted Values
Default
voice.volume.persist.handset
1
0 or 1
0
If 0, the handset receive volume will automatically reset to a nominal level after each call. If 1, the volume for
each call will be the same as the previous call. If set to 1, the handset receive volume will persist across calls.
If set to 0, the handset receive volume will be reset to nominal at the start of each call.
voice.volume.persist.headset
1
0 or 1
0
If 0, the headset receive volume will automatically rest to a nominal level after each call. If 1, the volume for each
call will be the same as the previous call.
voice.volume.persist.handsfree
1
0 or 1
1
If 0, the speakerphone receive volume will automatically rest to a nominal level after each call. If 1, the volume for
each call will be the same as the previous call.
voice.volume.persist.usb.handsfree
1
0 or 1
1
If 0, the USB headset will not be used. If 1, the USB headset will be used in handsfree mode.
voice.volume.persist.usbHeadset
1
0 or 1
0
If 0, the USB headset will not be used. If 1, the USB headset will be used.
1
Change causes phone to restart or reboot.
<vad/>
The paramters listed in Voice Activity Detection Parameters control the performance of the voice activity
detection (silence suppression) feature.
Voice Activity Detection (VAD) Parameters
Parameter
Permitted Values
Default
voice.vad.signalAnnexB
1
0 or 1
1
If 0, there is no change to SDP. If 1, Annex B is used and a new line is added to SDP depending on the setting of
voice.vadEnable.
If voice.vadEnable is set to 1, add parameter line a=fmtp:18 annexb="yes" below a=rtpmap…
parameter line (where '18' could be replaced by another payload).
If voice.vadEnable is set to 0, add parameter line a=fmtp:18 annexb="no" below a=rtpmap… parameter
line (where '18' could be replaced by another payload).

Polycom CX5500 Specifications

General

Field of View	360 degrees
Camera Resolution	1920 x 1080
Microphone Range	12 feet (3.6 meters)
Connectivity	USB
Audio Bandwidth	160 Hz to 22 kHz
Speaker	Built-in speaker
Compatibility	Microsoft Lync, Microsoft Skype for Business