Polycom RealPresence RMX 4000 Hardware Manual page 21

Bit Rate
(Kbps Bonded)
256
320
384
512
768
1152
1472
1536
1920
Polycom, Inc.
RealPresence Collaboration Server (RMX) 4000 System Capacities
Participants
(E1)
50
40
34
25
17
11
9
8
7
Participants
(T1)
50
40
34
25
17
11
9
8
6
Participant Type
ISDN-Video and Voice
ISDN-Voice occupies 64
Kbps of the total
bandwidth.
If the conference bit rate
is above 128Kbps but
does not match any of the
bonded bit rates,
participants are
connected at the highest
bonded bit rate that is
less than the conference
bit rate. For example: If
the conference bit rate is
1024Kbps, the participant
is connected at 768Kbps
14