Polycom Vortex EF2280 Reference Manual page 34

Figure 21. Matrix page of origin EF2280 (ID 00)
V EF2280 Reference Manual
ORTEX
set the Exported Signals to R
canceller reference on the EF Bus as the Bus Reference.
3. On all linked devices, set the echo canceller reference to B
For example, a system uses 2 EF2280s, 1 Vortex EF2201 Phone Hybrid, and 1
Polycom VS4000 video codec. The originating sources for far end audio is
EF2280 with ID 0. The Matrix for this EF2280 in Conference Composer is
shown in Figure 12 and the EF Bus page in Figure 13. Conference Composer
will not allow more than one device assign their echo canceller reference as
the Bus Reference. Notice that the Phone audio and VS4000 inputs are both
assigned to Reference 1 on the originating EF2280. The Matrix for any linked
devices is shown in Figure 23.
32
I EF2280 I
NTEGRATING THE
1. Only one device can put an echo
EFERENCE
Figure 22. EF Bus page of EF2280 (ID 00)
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