INTEGRATING THE EF2241 INTO YOUR SYSTEM
for their echo canceller, or they can use their own internal references. The references may include a mix of any input, with crosspoint gains, including W, X, Y, and Z bus- ses. Set the EF Bus Reference in the System Menu of the LCD Menu (See “EF Bus Reference” on page 28).
Setting up the | If all far end audio and program audio sources are on the same |
Bus Reference | Vortex device, |
| 1. Assign far end audio and program audio sources to Reference 1 on the originat- |
| ing device. |
| 2. On the EF Bus page in Conference Composer for the originating device, set the |
| Exported Signals to REFERENCE 1. Only one device can put an echo canceller |
| reference on the EF Bus as the Bus Reference. |
| 3. On all linked devices, set the echo canceller reference to BUS. |
| For example, a system uses 1 EF2241, 1 EF2280, and 1 Polycom VS4000 video |
| codec. The Reference 1 is set up on EF2280 with ID 0. The Matrix for this EF2280 |
| in Conference Composer is shown in Figure 10 and the EF Bus page in Figure 11. |
| 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 12. |
Figure 10. Matrix page of origin EF2280 (ID 00) | Figure 11. EF Bus page of origin EF2280 (ID 00) |
VORTEX EF2241 Reference Manual | 18 | Technical Support: 800.932.2774 |