Polycom EF2280 manual Assign Inputs, Assign Outputs, Configure the Submatrix, EF Bus

BUILDING YOUR SYSTEM WITH MULTIPLE VOR-

BUILDING YOUR SYSTEM WITH MULTIPLE VORTEXES®

The following is a checklist for building a system with multiple Vortexes:

1.Assign Inputs.

2.Assign Outputs.

3.Configure submatrix (the EF Bus).

4.Configure your echo canceller reference.

1.ASSIGN INPUTS

Assign each audio source to an input. Remember to include the conferencing equip- ment such as the EF200 Phone Add or a video codec and any program audio.

2.ASSIGN OUTPUTS

Try to assign as many outputs as you can to each Vortex to make a simpler submatrix. Remember that Outputs 1-8 can also be used as outputs of the matrix. The bussing can get very complicated very quickly if you choose to spread your outputs over sev- eral units.

3.CONFIGURE THE SUBMATRIX

	To link multiple Vortex devices together, use the submatrix on the EF Bus.
The EF Bus	The EF Bus is a high speed, low delay digital bus that includes the W, X, Y, and Z
	audio busses as well as the echo canceller reference and remote control information
	(for other Vortexes) and can link up to 8 Vortex devices. All busses include NOM
	information and can be used for sharing microphone inputs, or for sharing mono or
	stereo program information.
	Crosspoint Mix Minus Bus. Each Vortex device in the system can create four
	output mixes (W, X, Y, and Z) and place them on the bus. Each device also can create
	three input mixes each from the W, X, Y, and Z busses of the other devices (for a total
	of 12 mixes). The mixes can have crosspoint gains on the signals from the other
	devices. See Figure 1 below. All 12 mixes become inputs to the main matrix and can

© Polycom, Inc. 3 Vortex® Applications and Presets Guide