Asynchronous Serial Communications Programmer's Reference Manual (32022-90052)
Glossary 303
Glossary
A
ASCII A special interface card in
the system cabinet through which
the MPE/iX system console is
connected.
ADCP Avesta Device Control
Protocol. An HP proprietary
protocol which provides device
control features. ADCP is
optimized for communications
between a DTC and MPE/iX
systems.
address A numerical identifier
defined and used by a particular
protocol and associated software
to distinguish one node from
another.
address key See X.25 address
key.
address resolution In NS
networks, the mapping of node
names to IP addresses and the
mapping of IP addresses to
subnet addresses.
address resolution protocol
(ARP) A protocol used to convert
an IP address to a low level
hardware address. ARP can be
used only over a single physical
network and is limited to
networks that support hardware
broadcast.
adjacent A node on a
point-to-point network that is
connected to another node by a
single link with no intervening
nodes.
ADP Active Distribution Panel.
See MDP.
AFCP Avesta Flow Control
Protocol. An HP proprietary
protocol which provides data flow
control features. AFCP is
optimized for communications
between nodes, including DTCs,
in an MPE/iX environment.
ARP See address resolution
protocol.
ARPA Advanced Research
Projects Agency. It is the former
name of the Defense Advanced
Research Project Agency
(DARPA). The Internet suite of
protocols was developed under
ARPA guidance.
ARPA DTC Telnet Access An
HP product which is a card that
can be installed in a DTC 48 and
DTC 72MX. The Telnet Access
Card performs protocol
translation. Calls to the IP
address of an MPE/iX system are
detected by the Telnet Access
Card and are retransmitted on
the LAN using AFCP, allowing
connections from terminals on
ARPA systems to HP 3000s.
ARPA DTC Telnet Express
Box An HP product which is a
standalone hardware platform
dedicated to performing protocol
translation. Calls to the IP
address of an MPE/iX system are
detected by the Telnet Express
Box and are retransmitted on the