Polycom 7.5 Manual De Usuario

Security Failure

Remote device 
capabilities do not 
support encryption

The endpoint failed to 
encrypt. (ISDN)

A common key 
exchange algorithm 
could not be established 
between the MCU and 
the remote device

The endpoint does not 
support the local 
encryption key 
exchange algorithm.

Remote device did not 
open the encryption 
signaling channel

The endpoint did not 
open the encryption 
signaling channel.

Remote device key 
exchange algorithm 
message was not 
received by the MCU

The MCU did not 
receive the remote 
encryption algorithm 
capabilities from the 
endpoint.

The encryption setup 
process did not end on 
time

The encryption setup 
process did not end on 
time.

Remote device cannot 
encrypt

The endpoint failed to 
encrypt. (ISDN)

The remote device failed 
to start encryption 
system

The endpoint failed to 
start the encryption 
system. (ISDN)

The 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. 
(ISDN and IP)

Encryption key 
exchange failed

Encryption key 
exchange failed. (ISDN)