The Analog Station Interface(FXO) provides the following features:
•Ring Generation and Ringing Trip
•Loop Closure Detection
•Loop Disconnect
•Loop Reversal
•Loop Voltage and Current Monitoring
•On-hook and Off-hook Transmission
•Hook-flash Detection
•DTMF Signalling
•Programmable Audio Gain
•On-board Power Generation
•Constant Loop Current: 20mA
The loop start Analog Interface(FXS) provides the following features:
•Detects ringing when on-hook
•Detects loop current when off-hook
•Detects when tip/ring voltage crosses a set voltage when on-hook or off-hook (called DC triggering)
•Can accommodate private branch exchange (PBX) with –48 V battery voltage
•Loop current range: 13-110mA
•Voltage detection threshold is software-selectable
The 2FXOS module applies to CooVox-U50/U80/U100 IP Phone System with 4 RJ11 ports for connection. Each port has one LED(LightEmitting Diode), which is assembled on the main board.
FXS--- Green LED indicates port status:
> Solid Green= Module loading successful
> Blink Green= Ringing
FXO--- Red LED indicates port status:
> Solid Red= Module loading successful
> Blink Red= Ringing
If the LED is off, the module is loading failure.
All four ports on Zycoo 2FXOS module bracket are 6P4C RJ11 ports. The pin assignments are indentified in Tabel 1.
Table 1: RJ11 Telco Port Connector
| PIN | Description |
1 | Not used |
2 | Tip |
3 | Ring |
4 | Not used |
Notice: Long term operation of FXS will cause some malfunction and affect the system reliability; to avoid any malfunction and assure reliable, the FXS module forced-air cooling is mandatory.
Environmental Operation Information
Temperature:0°C ~ 40°C
Humidity: 5% ~ 95% Non-Condensing
Physical Dimensions
88.5 x 132 mm