3Com S330 manual Multi-point Video Conferencing

Models: S330

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240APPENDIX B: PATHBUILDER S330/S310 MODULE AND APPLICATION OVERVIEW

Multi-point Video Conferencing

In multi-point video conferencing an MCU (Multi Conference Unit) device is connected to one T1-DSX/E1 CBR port of a PathBuilder S600 or PathBuilder S330/S310 at the central site. The remote PathBuilder S330/S310 switches communicate with each other via their serial (V.35/RS-366) ports, as they do in point-to-point video conferencing. In addition, the remote units can communicate with the MCU at the central site over a vpi/vci associated with a fractional T1/E1 bundle of the CBR port connected to the MCU. When a remote unit dials the number associated with that vpi/vci, the central unit sees activity on that line and automatically starts transmitting over the vpi/vci, thus completing the circuit.

Figure 179 illustrates multi-point video conferencing between three remote

PathBuilder S330 switches (#1111, #2222, and #3333) and one central

PathBuilder S600 switch (#4444) connected to an MCU.

Figure 179 Multi-point Video Conferencing

Video/Audio

Video/Audio

Video/Audio

 

Codec

 

Codec

 

Codec

V.35/

RS-366

V.35/

RS-366

V.35/

RS-366

RS-449/

RS-449/

RS-449/

RS-530/

 

RS-530/

 

RS-530/

 

X.21

 

X.21

 

X.21

 

 

PBS330

 

PBS330

 

PBS330

 

#1111

 

#2222

 

#3333

ATM n x T1/E1

PBS600MCU #4444

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3Com S330 manual Multi-point Video Conferencing