Specifications

Chapter 7 Battery Reversal FXS/DPO
7-4
If your voice channels require different attenuation level settings than the factory defaults, proceed as
follows:
1. Release the two thumbscrews on the ABI back plate and remove the plate (see Figure 8-4).
2. To remove the FXS slide-in voice card, pull out the two card ejector latches simultaneously to
release the card from the internal connector, then slide the card carefully out from the rear of the
ABI chassis (see Figure 8-4).
3. To set different transmit and/or receive gain or loss levels, refer to Figure 8-3 and Table 8-1.
4. To reinsert the BRFXS/DPO voice card, ensure that the card is positioned correctly in the card
rails, then carefully slide the card into the slot until it stops.
5. Press both card ejector latches in towards the FXS card to seat the 64-pin DIN connector in the
matching connector on the internal Controller card.
6. After setting the transmit and receive level options, replace the back plate and tighten the
thumbscrews.
Table 8-1. BRFXS/DPO Transmit and Receive Level Settings
Switch Function (Switch OFF)
1 -2 dB Receive Loss
2 -3 dB Receive Loss
3 -4 dB Receive Loss
4 -2 dB Transmit Loss
5 -3 dB Transmit Loss
6 -4 dB Transmit Loss