4FXO module supports CooVox-U50/ CooVox-U100 IP Phone System with 4RJ11 ports for PSTN line connection. Each port has one LED (Light-Emitting Diodes).

The analog trunk FXO (Foreign Exchange Office) is an interface that connects to a trunk line, like the one from your service provider. It receives ringing voltage and battery from FXS devices. FXO interfaces are used to connect your PBX to the PSTN. One FXO channel is required for each line you receive from your Telco.

The Analog Trunk FXO provides connectivity to analog central office loop start trunk line analog interfaces. And it can be combined with BRI, PRI, GSM module.

The FXO Analog Interface provides the following features:

• Detects ringing when on-hook
• Detects loop current when off-hook
• DC triggering
• Can accommodate private branch exchange (PBX) with -48 V battery voltage
• Loop current range: 13-110mA
• Voltage detection threshold is software-selectable

Here’s a detailed product description:

1. Compatibility:
   • The 4FXO module is specifically designed for use with ZYCOO’s U50 and U100 series IP PBX systems. It seamlessly integrates into these systems, enhancing their capabilities.
2. FXO Ports:
   • This module features four FXO ports. FXO ports are used to connect the PBX system to the traditional PSTN (Public Switched Telephone Network), allowing the system to handle incoming and outgoing calls over standard telephone lines.
3. Expansion of Connectivity:
   • The addition of the 4FXO module expands the connectivity options of the IP PBX, allowing businesses to connect to external phone lines and leverage traditional telephony infrastructure.
4. Increased Call Capacity:
   • With four additional FXO ports, the IP PBX can handle a higher volume of simultaneous calls. This is particularly beneficial for businesses with a higher call volume or those that require additional external lines.
5. Flexible Call Routing:
   • The module enables flexible call routing options, allowing administrators to configure how incoming and outgoing calls are managed. This flexibility is crucial for optimizing call handling based on business needs.

Also see;

ZYCOO 2FXOS U50-U100 2FXOS module with interface 2FXO and 2FXS

Zycoo 2GSM trunk module SMS/Voice (for U50/100/P2)

The Zycoo 2GSM trunk module SMS/Voice (for U50/100/P2)