TDM1600 - 16 Port FXO/FXS

TDM1600 card is a hardware module for UCA-5520 PBX to add support for analog interfaces such as FXO & FXS interfaces. The TDM1600 is a PCI compliant card that supports upto sixteen (16) FXS or FXO interfaces. It supports a combination of S2 or O2 modules for a total of 16 FXS or FXO interfaces. S2 modules come with 2 FXS ports where as the O2 module comes with 2 FXO ports.

TDM800 - 8 Port FXO/FXS

TDM800 card is a hardware module for UCA-5520 PBX to add support for analog interfaces such as FXO & FXS interfaces. The TDM800 is a PCI compliant card that supports upto eight (8) FXS or FXO interfaces. It supports a combination of S2 or O2 modules for a total of 8 FXS or FXO interfaces. S2 modules come with 2 FXS ports where as the O2 module comes with 2 FXO ports.

TDM400 - 4 Port FXO/FXS

TDM400 card is a hardware module for UCA-5520 PBX to add support for analog interfaces such as FXO & FXS interfaces. The TDM400 is a PCI compliant card that supports upto four (4) FXS or FXO interfaces. It supports a combination of S2 or O2 modules for a total of 4 FXS or FXO interfaces. S2 modules come with 2 FXS ports where as the O2 module comes with 2 FXO ports.