The TDM800 is a PCI 2.2 compliant card that supports FXS and FXO station interfaces for connecting analog telephones and analog POTS lines through a PC, It supports a combination of S2, O2 or SO modules for a total of 8 lines.

Using Asterisk PBX software and standard PC hardware a user can create a SOHO telephony environment which includes all the sophisticated features of a high end
PBX / Voicemail platform.

 

SO Module(1 FXS & 1 FXO Ports):
Unique PSTN Fallback Function! Make/receive calls even when system powers down.
S2 Module(2 FXS Ports):
The S2 is a module with 2 FXS ports to terminate two analog telephone.
O2 Module(2 FXO Ports):
The O2 is a module with 2 FXO ports to terminate two analog PSTN(POTS) lines.

 

The TDM card have different series, and can support many different OS.

Any confuse pls feel free contact me.