Glossary.

This is an ettempt to explain difficult/strange words from this documentation. Send all your suggestions for this page to LA6CU. Autobin : A protocole for transfer of binary files via radio-ports. Supported by several terminal-programs. BBS : Bulletin Board System. Works close to a "mailoffice" for digital messages. Users send and receive messages via the BBS. The BBSs forward messages between each other. In amateur-radio use, all traffic is done via radios/TNCs. DAEMON : A version of a linux-program (like XFBB) that runs in the background without graphic interface. Console connections, gateway and monitoring are possible with a special program supplied. DLL : DLL is Dynamic Link Library. This is used in the windows environment and allows a program to attach a library which holds some code during the session or only during a phase of a program (like filters in FBB). This allows a very fast and efficient mechanism. Also DLL may be compact. DPMI : Dos Protected Mode Interface. It enables Ms-Dos based applications to access all the extended memory installed in the PC maintaining system protection. DosFBB uses it, so it is not limited to the memory below 1Mb and PG/SERVERS have more that 500Kb of memory to run. FIFO : First Input First Output. Type of buffer used in many serial port cards to improve performance and avoid loss of data. It is recommended in multitasking operating systems. GPF : Windows error-message. Means that the BBS has performed an action that has caused a General Protection Failure. HOSTMODE : TNC operating mode that sets the TNC as slave of the computer (host). The TNC only sends data to the computer when the computer request them. Examples are DED-HostMode, KAM-Hostmode and PK232-HostMode. Special commands are also defined to allow the user to set ax25 parameters. KISS : Keep It Simple Stupid. KISS is a simple TNC operating mode that allows the PC to process the packets. In this mode AX25 protocol is removed from the TNC and it only converts HDLC synchronous frames from radio to special asyncronous frames to send to the computer via the serial link. No other action is done on the frames received. TXDelay, Persist, SlotTime and TXTail are the only timers managed by the TNC. Modem : MOdulator/DEModulator. Converts digital signals to analog, and vice versa. For sending converted digital signals via analog telephone lines, or via analog radios. MUX : Port MUltipleXer. A small "device" that uses one single COM-port from the PC to communicate with up to 4 TNCs in DED-host mode. The mux is easy to build, schematics are available from several sources. TNC : Terminal Node Controller. A modem for packet-radio that holds the AX25 protocol. Connects between PC and radio. VXD : Virtual Devices. They are 32 bits drivers used by Windows programs when they need to access computer's hardware directly. YAPP : "Yet Another Packet Program". Originally a program by WA7MBL for simple transfer of binary files on packet radio. The protocol from his program is widely known as the YAPP-protocol. Xforward : Another kind of compressed forward, implemented in FBB.