TANDBERG Video Conferencing System 7000 用户手册

94

TANDBERG Videoconferencing System

Advanced use

The system will try to set up calls using encryption.

Point to point calls: If the far end system supports encryption, the call will be encrypted. If not, the
call will proceed without encryption.

MultiSite calls: In order to have encrypted MultiSite calls, all sites must support encryption. The
padlock symbol will indicate encryption mode (AES or DES). If there is a mix of AES and DES
encryption, only the symbol for DES encryption (single padlock) will be displayed.

If the far end supports encryption, the systems will initiate encryption after the call is connected (an
‘open padlock’ symbol will be displayed). When encryption has been established, a ‘closed padlock’
symbol will be displayed.

The system will not send or receive encrypted data.

Technical encryption information like encryption algorithm and encryption check code can be found in the ‘Call
Status’ menu.

The system will try to use the most secure encryption - AES, dependent on the capabilities of the
other sites. If AES-encryption is not supported by all the other sites, DES encryption will be tried.

The system will try to use AES* with 128 bits encryption when setting up calls. If AES is not
supported by the other site(s), no other type of encryption will be initiated.

The system will always try to set up the call using DES with 56 bits encryption on ISDN and IP. If
DES is not supported by all other sites, no other type of encryption will be initiated.

B

OTH

  AES 

AND

 DES E

NCRYPTION

 

IS

 

SUPPORTED

 

FOR

 

MIXED

 ISDN/IP 

CALLS

. I

N

 

ADDITION

 AES -

AND

 DES E

NCRYPTED

 

SITES

 

CAN

 

BE

CONNECTED

 

AT

 

THE

 

SAME

 

TIME

.

T

HE

 M

ULTISITE

 

CAN

 

RUN

 4 

ENCRYPTED

 

SITES

 

AT

 128 K

BPS

 

AND

 3 

ENCRYPTED

 

SITES

 

AT

 256K

BPS

.