Polycom WEBCOMMANDER 8 - Manual (Page 298)

Chapter 10 - Conference Templates – Full Parameters View
10-12
Line Rate Specify the transfer rate in Kbps.
Video Switching - you must select the highest
transfer rate common to all participants. For
example, if two participants can connect at a transfer
rate of 384 Kbps and one participant can connect at
a transfer rate of 128 Kbps, set the Line Rate to 2B
or 128 Kbps (2B in Bonding mode). In a conference
with participants from mixed networks (ISDN and
H.323), the line rate defined for the ISDN participant
is the line rate that will be used for the H.323
participant. The line rate currently supported for
H.323 is E1. In such a rate, the number of H.323
participants supported by the H.323 Network
Interface module is reduced by half from 12 to 6
participants.
Transcoding and Continuous Presence - the line
rate has to be defined for each of the participants
separately. The settings in this field apply only to
those participants whose Line Rate was set to Auto.
In such a case, set the conference line rate to the
highest transfer rate common to all participants.
Maximum transfer rate in Transcoding and
Continuous Presence modes is 1920 Kbps (E1).
Software Continuous Presence - the Line Rate is
set for conferences and represents the transmission
rate from the MCU to the endpoint (combined video
rate and audio rate). For more details regarding the
Line Rate settings for Software CP conferences, see
MGC Manager User’s Guide Volume II, Chapter 1,
Version.
Note:
The high line rate transmission is enabled with the
standard video card (version 1.43 and up) or with the
Video+ card. The line rate of incoming ISDN/H.323
calls can be automatically detected and the
participant can be connected according to his/her
capabilities, without prior setting of the endpoint’s
line rate during conference setup. In such a case,
the conference Line Rate is the maximum rate for
the participant connection.
Table 10-3: Basic Conference Parameters
Option Description