1.Product description
The 4-port FXO module is internally integrated with functional modules such as codec, FXO interface circuit (hybrid, AC/DC termination, ring current detection and ring control circuit) and interface protection, providing all port functions required by the 4-port FXO interface.FXO module adopts 3.3V single power supply, 3.3V is the internal working voltage, and the interface circuit is powered from the analog second line.FXO module can configure and control parameters such as coding mode, interface impedance,ringing detection, etc. by SPI interface. FXO module communicates with external data through PCM/GCI data interface, and the clock frequency and time slot allocation of the interface are flexibly configured.
2.Main function
* single module integrates 4-ports FXO interface circuits
* support ringing detection,polarity detection,2-4 wire conversion and ring control
* support on-hook transmission and call display
* support A-law PCM coding,u-law PCM coding and 16-bit linear coding and decoding
* AC termination,DC termination and ringing detection parameters are programmable
* support line voltage detection and ring current detection
* support pulse dialing
3,Product application
X4O04 can be applied to the following devices:
* SPC switch
* VOIP gateway
* xDSL Integrated Access Devices (IADs)
* PBX, IP-PBX system* Voice dispatching equipment
