SO Module (1 FXS & 1 FXO Ports):
Unique PSTN Fallback Function! Make/receive calls even when system power break down.
| Specifications | |
| Port | 1 FXO RJ11 Port + 1 FXS RJ11 FXO Port |
| Supported Model | S20, S50, S100, S300, P550, P560, P570 |
| FXO Ring Frequency Detection | 15~50 Hz |
| FXS Ring Frequency | 25 Hz |
| Termination | PSTN lines and Analog Telephone / Fax Machine |
| Ring Voltage | 85V |
| Failover | Support |
| Echo Cancellation | Support |
| Terminating Impedance Option | 600 Ohm |