Especially tailored for use in Internet, file and telecommunications servers, the PCI plug-in adapter supports up to four BRI ISDN lines. This means eight data channels are available in a LAN simultaneously, and can be used for separate connections or bundled in any combination. Thanks to its CAPI interface, the new ISDN-Controller is compatible out of the box with all standard applications. The C4's controller software conforms fully with the CAPI 2.0 interface, and supports the operating systems Microsoft Windows NT, Novell NetWare and Linux. Thus the ISDN-Controller can be used in practically all network environments, both for internetworking and as a communications or fax server.
All common protocols are available for digital data communications.
The simultaneous use of all eight channels represents a total bandwidth of 512 kilobits per second. Moreover, applications can use V.42bis data compression for an effective throughput several times higher, depending on the type of data being transferred. ISDN-Controller C4 unfolds its full performance potential in communication with analog devices. Above and beyond the conventional fax speed of 14.4 kilobits per second, faxes can now be sent and received with G3 fine resolution over all eight channels at the same time at speeds of 33.6 kilobits per second. Full duplex communication with analog modems is also possible at that speed in accordance with the V.34 standard.