LifeSize Gateway-PRI, User Manual

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Functionality 11
About LifeSize Gateway Applications and Topologies
A
BOUT
P
OINT
-
TO
-P
OINT
C
ONFERENCING
The LifeSize Gateway-PRI enables direct video, voice, and data communication
between an H.320 (ISDN) terminal and H.323 (IP) terminals at bandwidths of
up to 1472 Kbps (23B bonding for T1) and up to 1920 Kbps (30B bonding for
E1) (see
Figure 1-2 ).
Figure 1-2 Point-to-Point Conferencing through the Gateway
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BOUT
M
ULTIPOINT
C
ONFERENCING
Together with the LifeSize Multipoint, the LifeSize Gateway-PRI enables
H.320 ISDN terminals to participate in a mixed ISDN-IP multipoint multimedia
conference with IP network endpoints (see
Figure 1-3 ).
For example, when an H.320 ISDN terminal wants to participate in a multipoint
conference with H.323 IP endpoints, the H.320 ISDN terminal can either join
the multipoint conference by dialing to the LifeSize Gateway, or be invited into
the conference by one of the participating IP endpoints. In either case, the
LifeSize Gateway connects the ISDN terminal to the LifeSize Multipoint,
enabling it to participate in the multipoint conference.
IP network
LifeSize Gateway
ISDN
H.323
terminal
H.320
terminal