Polycom 2000 User Manual

If a participant was unable to connect to a conference or was disconnected 

from a conference, the Connection Status tab in the Participant Properties 

dialog box indicates the call disconnection cause. In some cases, a possible 

solution may be displayed.
A video participant who is unable to connect the video channels, but is 

able to connect as an audio only participant, is referred to as a Secondary 

participant. For Secondary participants, the Connection Status tab in the 

Participant Properties dialog box indicates the video disconnection cause. 

In some cases, a possible solution may be indicated.
The table below lists the call disconnection causes that can be displayed in 

the Call Disconnection Cause field and provides an explanation of each 

message 

Disconnected by User

The user disconnected the endpoint from the 
conference. 

Remote device did not 
open the encryption 
signaling channel

The endpoint did not open the encryption 
signaling channel. 

Remote devices selected 
encryption algorithm does 
not match the local 
selected encryption 
algorithm

The encryption algorithm selected by the 
endpoint does not match the MCU's encryption 
algorithm.