Analogue Voice adapters (FXS/FXO)

ACB adapter

The ACB adapter has the following interfaces and provides the following services:

4 analogue ports
4 housings for interface modules FXS and FXO
2 housings for the voice compression modules (ACBM)
1 connector for Master/Slave connection of 2 ACB adapters
1 connector for connecting the power supply needed by the FXS interfaces
ISA bus

In each Abilis CPX it is possible to plug in up to 5 ACB adapters in Master/Slave configuration.

ACB, fonia analogica
Figure 17. ACB adapter.

**Table 18.** ACB, switch SW1.
Base address	SW1			Master/Slave selection	SW1
Base address	1	2	3	Master/Slave selection	4
0x320	ON	off	ON	Master	ON
0x340	off	ON	ON	Slave	off
0x2A0	ON	ON	off

The JP1 jumpers block select the IRQ level used by the adapter.

The connector J1 is used to connect the ACB master to the ACB slave, configured for the same address.

The connector J2 is used only if at least one FXS interface is plugged: it supplies the requested power to the telephone connected.

CAUTION
When the connector J2 is used, 48V DC and 80V AC are present on the pins; so that before opening the Abilis CPX always disconnect the electric current plugs.

For correct jumpers/switches configuration, it also depends on the software one, refer to the chapter Ports numbering and adapters configuration.

Each port can be equipped with the chosen interface module, the following figure shows the FXS and FXO modules.

Base configuration of the ACB adapter provides the ports 0 and 1. For being able to use also ports 2 and 3 the following components must be added:

module ACBM #1 for port 2/3
codecs 2 and 3
interface modules 2 and 3

Moduli ACBM,FXS,FXO per ACB
Figure 18. ACB, modules FXS, FXO, ACBM.

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