Digium 1A4A04F 4 Port 2-FXS/2-FXO PCI Card with EC
4 port modular analog PCI 3.3/5.0V card with 2 Station and 2 Trunk interfaces and HW Echo Can - Replacement for:1TDM422EF

One (1) - four (4) analog ports
PCI or PCI Express bus architectures
Combine line (FXO) and station (FXS) modules
Accepts up to four (4) single-port modules
Optional DSP -based carrier grade echo cancellation module
32-bit 33MHz
Loop Start or Kewl Start Signaling
Temperature: 0° to 50° C
Digium patented VoiceBus? technology for better audio