TANDBERG 770 用户手册

36

TANDBERG Videoconferencing System

General use

MultiSite (MCU)*

The system has a built-in multipoint conference unit (MCU), MultiSite, which has the capability to establish
meetings with up to 4 video sites (5 if at least one site is a telephone call, ISDN/analogue/mobile).

The video calls in a conference must be connected using the same bandwidth.

A conference can consist of any combination of ISDN/

LAN sites.

It is possible to have telephone meetings with up to 5
participants.

The MultiSite supports both Voice Switched and
Continuous Presence mode (see ‘MCU Services’ in
‘Advanced use’ for description of these modes).

Establishing a conference is done by first making a call
to one site. When a call is established with the first site,
the other sites are connected one by one.

It is possible to either dial out to the sites or the sites
can dial in to the MultiSite.

Both ISDN, IP and mixed ISDN/IP conferences can be

      encrypted if all systems supports encryption.

* - Optional feature.

S

EE

 ‘U

TILITIES

’, ‘C

ONTINUOUS

 P

RESENCE

’ 

TO

 

CHANGE

 

MODE

.

TIP

M

ULTI

S

ITE

 - W

HICH

 

QUALITY

 

CAN

 

BE

 

USED

 

ON

 

EACH

 

SITE

?

             N

O

 

OF

 

SITES

B

ANDWIDTH

4 

SITES

3 

SITES

768 

KBPS

256

384

1152 

KBPS

384

512

1536 

KBPS

512

768

NOTE - 4 

SITES

 

INDICATES

 

YOURSELF

 + 

THREE

 

OTHER

 

SITES

.

For encrypted calls, there is a maximum bandwidth of 768 Kbps for the whole conference. This means that a 3
site conference will have a maximum bandwidth of 384Kbps per connection, while a 4 site conference will have a
maximum bandwidth of 256 Kbps per connection.

T

HE

 

SYSTEM

 

SUPPORTS

 

MIXED

 M

ULTI

S

ITE

 

WITH

 V.35 

AND

 IP, 

BUT

 

THE

 IP 

SITE

 

MUST

 

BE

 

ADDED

 

AFTER

 

THE

 V.35 

IS

 

UP

 

AND

 

RUNNING

.

NOTE