AWAN 3883/4/5 Access Server Configuration and Management Manual

Glossary
AWAN 3883/4/5 Access Server Configuration and Management Manual—424242-001
Glossary-5
Tandem Advanced Command Language (TACL)
Tandem Advanced Command Language (TACL). The user interface to the Tandem
NonStop Kernel operating system. The TACL product is both a command interpreter
and a command language. Users can write TACL programs that perform complex tasks
simply or provide a consistent user interface across independently programmed
applications.
Tandem NonStop TCP/IP subsystem. A Tandem subsystem that allows the use of Tandem
Transmission Control Protocol over Internet Protocol (TCP/IP) to access a Tandem host
from Macintosh, personal computer, and UNIX workstations. Applications running on a
Tandem system or in an Expand network can transparently exchange data with TCP/IP
devices.
Telnet. The process by which a person using one computer can sign on to a computer in
another location. Using Telnet, you can work from your personal computer (PC) as if it
were a terminal attached to another machine by a hardwired line.
Telserv process. The Tandem implementation of the Telnet server, which includes TN6530
extensions.
TCP/IP. See Transmission Control Protocol over Internet Protocol (TCP/IP)
.
TN6530. A Tandem extension to the Telnet RFC that supports the proprietary 6530
datastream. The TN6530 server is implemented by the Tandem TELNET Server
(Telserv) subsystem. The TN6530 client is implemented by the AWAN access server and
by 6530 terminal emulators available from Tandem and certain third-party vendors.
Transmission Control Protocol (TCP). A connection-oriented protocol that provides for the
reliable exchange of data between a sending and a receiving system. TCP implements
functions corresponding to the Open Systems Interconnection (OSI) reference model
Layer 4, the transport layer.
Transmission Control Protocol over Internet Protocol (TCP/IP). A set of layered
communications protocols for connecting workstations and larger systems.
Trivial File Transfer Protocol (TFTP). A protocol defined by Request for Comment (RFC)
1350. TFTP can be used to download firmware to the AWAN access server.
user list. A database of user names, passwords, and authorized protocols for users who will
dial into (or out of) the network through the AWAN access server. There are two types
of user lists: the local database and the server database. The local database is maintained
on the hard drive of the management workstation. The server database is maintained on
the AWAN access server in its nonvolatile random access memory (NVRAM).
WA N. See wide area network (WAN).