Polycom 2000 9-32, The Connected Media and Channels Used fields of an Audio Only participant are displayed as follows:,

Chapter 9-Conference and Participant Monitoring
9-32
The Connected Media and Channels Used fields of an Audio Only participant
are displayed as follows:
Channels Used
(continued)
•Participant Phone Number – In a dial-in
connection, indicates the participant’s CLI
(Calling Line Identification) as identified by the
MCU.
In a dial-out connection, indicates the
participant’s phone number dialed by the MCU
for each channel.
•MCU Phone Number – In a dial-in connection,
indicates the MCU number dialed by the
participant.
In a dial-out connection, indicates the MCU (CLI)
number as seen by the participant. This is the
number entered in the MCU Number field in the
Network Service.
Tx - Video Sync
Loss
When checked, indicates a video synchronization
problem in the outgoing channel from the MCU.
The counter indicates the sync-loss count.
Rx - Video Sync
Loss
When checked, indicates a video synchronization
problem in the incoming channel from the endpoint.
The counter indicates the sync-loss count.
Content Token A check mark indicates that the participant is the
current holder of the Content Token.
Table 9-16 ISDN/PSTN Participant Properties - Channel Status
Field Description
Audio is the only
Connected
Media
Single channel
is used