Polycom RMX 1500 Administrator's Manual page 937

Disconnection Cause Values
For an explanation of the disconnection causes, see Appendix A: "Disconnection
Causes" on page A-1.
Table C-37 Disconnection Cause Values
Value Call Disconnection Cause
0 Unknown
1 Participant hung up
2 Disconnected by User
5 Resources deficiency
6 Password failure
20 H323 call close. No port left for audio
21 H323 call close. No port left for video
22 H323 call close. No port left for FECC
23 H323 call close. No control port left
25 H323 call close. No port left for video content
51 A common key exchange algorithm could not be established between
the MCU and the remote device
53 Remote device did not open the encryption signaling channel
59 The remote devices' selected encryption algorithm does not match
the local selected encryption algorithm
141 Called party not registered
145 Caller not registered
152 H323 call close. ARQ timeout
153 H323 call close. DRQ timeout
154 H323 call close. Alt Gatekeeper failure
Polycom RMX 1500/2000/4000 Administrator's Guide
C-55