Ip Disconnection Causes - Polycom RealPresence 1500 Administrator's Manual

Appendix A - Disconnection Causes
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

IP Disconnection Causes

Call Disconnection Causes
Disconnection Cause
Disconnected by User
Remote device did not open the
encryption signaling channel
Remote devices selected encryption
algorithm does not match the local
selected encryption algorithm
Resources deficiency
Call close. Call closed by MCU
H323 call close. No port left for audio
H323 call close. No port left for video
H323 call close. No port left for FECC
H323 call close. No control port left
H323 call close. No port left for videocont
H323 call closed. Small bandwidth
H323 call closed. No port left
Polycom®, Inc.
Description
The user disconnected the endpoint from the conference.
The endpoint did not open the encryption signaling channel.
The encryption algorithm selected by the endpoint does not match the
MCU's encryption algorithm.
Insufficient resources available.
The MCU disconnected the call.
Insufficient audio ports.
The required video ports exceed the number of ports allocated to video
in fixed ports.
The required data ports exceed the number of ports allocated to data in
fixed ports.
The required control ports exceed the number of ports allocated to
control data in fixed ports.
The required video content ports exceed the number of ports allocated
to video content in fixed ports.
The gatekeeper allocated insufficient bandwidth to the connection with
the endpoint.
There are no free ports left in the IP card.
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