A European format for digital transmission. E1 supports signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling), versus the T1, which carries signals at 1.544 Mbps (24 channels at 64Kbps).
TDM800P is an eight Port analog PCI 3.3/5.0V Card equipped with echo cancellation and 8 Trunk Interfaces. This is a half length PCI 2.2 complaint, 8 port card meant for connection of analog POTS lines and analog phones via personal computer. It provides support for combinations of FXO and FXS modules maximum of eight lines.