Data Link Control Protocol (DLC)

For all practical )purposes, DLC is rarely found anymore in the network. This IBM protocol was widely used during the early days of networked printing, as well as for other applications. However, more robust protocols, such as TCP/IP, have made this protocol a less desirable solution for network printing.

The DLC protocol was developed by IBM primarily for use in connecting to mainframe computers as part of its Systems Network Architecture (SNA) specifications. DLC can also be used to establish terminal sessions with AS/400 computers. In addition to the HP Jet Direct card, you will find that other vendors also make network cards for printers that can use DLC. For example, the Brother NC-600X and NC-2010h network cards both can be used for this purpose. However, you'll find that DLC no longer is present in Windows systems starting with Windows) XP.