Table A-1 Terms
|
Term
|
Description
|
|
ttyd
|
Device driver that runs on the UNIX mainframe acting as the
terminal access server.
|
|
Many-to-one
|
One operation mode for terminal access server, in which multiple
terminals (virtual terminals) correspond to one TCP link.
|
|
Active terminal
|
Pseudo terminal device that displays the login interface.
|
|
FEP
|
In banking systems, the UNIX mainframes that are located in the
branch banks and run banking service applications are called front-end
processor (FEP).
|
|
Physical terminal
|
A physical terminal device, also known as ttyxx, connected to a
serial interface on the UNIX mainframe.
|
|
Pseudo terminal
|
A logical terminal device, which is composed of ttypxx and ptypxx
logical devices, corresponding to a virtual async interface on the UNIX
mainframe.
|
|
VTY
|
Virtual type terminal. The terminal access server divides each
terminal into eight virtual terminals logically, and each virtual terminal
corresponds to one application (APP).
|
|
Dump terminal
|
Pseudo terminal device that does not display the login interface.
|
|
One-to-One
|
One operation mode for terminal access server, in which each
terminal (virtual terminal) corresponds to one TCP link.
|
|
APP
|
Application configured on the terminal access server, correlated
to a FEP.
|
|
Application program
|
Service applications running on the UNIX mainframe of a bank.
|
|
TTY
|
Logical terminal device configured on an async interface of the
terminal access server (the router), also known as the TTY device correlated
to the physical device that is connected to the async interface. It sometimes
means the physical terminal device at a business site. The proper meaning
depends on the context.
|
|
Terminal access server
|
Device that provides terminal access services. It refers to a
router in this document.
|
|
Terminal device
|
Physical display device at a business site for operators to use.
|
Table A-2 Acronyms
|
Acronym
|
Expansion
|
Description
|
|
AAA
|
Authentication, authorization, and accounting
|
A unified frame for the three security functions of
authentication, authorization, and accounting. It can be used to manage the
security of the network.
|
|
AUX
|
Auxiliary port
|
A line device providing an EIA/TIA-232 DTE interface. It is usually
used for dialup through Modem.
|
|
CQ
|
Custom Queuing
|
A queuing policy to allocate resources based on user-defined
bandwidth proportion.
|
|
DLSw
|
Data link switching
|
A method to carry systems network architecture (SNA) over TCP/IP.
It was developed by Advanced Peer-to-Peer Networking (APPN) Implementers
Workshop (AIW)
|
|
ISDN
|
Integrated services digital network
|
Services comprised of digital telephony and data-transport offered
by regional telephone carriers.
|
|
QoS
|
Quality of service
|
Measure of the packet delivery capacity of IP networks. Usually,
the capacity to deliver services answering requirements on delay, jitter, and
loss rate are measured. Some supporting technologies are required to satisfy
these core requirements.
|
|
Comware
|
Comware Software
|
Comware Software for data communications by H3C Technology.
|
|
VTY
|
Virtual Terminal
|
Commonly used as virtual (logical) terminal line for Telnet access
to the router.
|
|
TCP
|
Transmission control protocol
|
A transport layer protocol in the TCP/IP stack. It can provide
reliable, full-duplex stream services for many application protocols.
|
