Envoy Application Programming Manual
Table Of Contents
- What’s New in This Manual
- About This Manual
- 1 Application Programming With Envoy
- 7 ADM-2 Multipoint Supervisor Protocol
- 8 TINET Multipoint Supervisor Protocol
- 9 Burroughs Point-To-Point Protocol
- 10 Asynchronous Line Supervisor Protocol
- A ASCII Character Set
- B ASCII to EBCDIC Code Conversion
- C File-System Procedures
- D Statistics Messages
- E S-Series Changes to Envoy
- NonStop™ Himalaya S-Series Server Architecture
- G-Series Migration Considerations
- CBSENSEON and CFSENSEON Modifiers
- LEOTRESYN and NOLEOTRESYN Modifiers
- Treatment of Characters After the Termination Character
- Number of SYN Characters
- DTR Drop
- Reporting of Parity Error
- Half-Duplex Support for Asynchronous Lines
- Controller Replacement
- SYSGEN and COUP
- Unit Numbers
- FDX Line Changes
- No Support for Auto-Call Unit
- Glossary
- Index
Glossary
Envoy Application Programming Manual—427159-001
Glossary-9
Subsystem Programmatic Interface (SPI).
Subsystem Programmatic Interface (SPI). A common, message-based interface that can
build and decode messages used for communication between requesters (for example, a
management application) and servers (Compaq subsystems).
supervisor. The controlling station in a centralized, multipoint, data link.
SWAN concentrator. See ServerNet WAN (SWAN) concentrator
.
switched line. A line configuration for circuit-switched networks such as a public telephone
network.
synchronous. A general class of data communications that is the opposite of asynchronous
communications. “Synchronous” means that a clock signal, separate from the data
signal, is used to synchronize the receive circuits.
SYSGEN. The system generation program used to generate a system-customized version of
the Guardian 90 operating system on D-series releases.
TINET. A communications access process providing the capability to control multiple
terminals on a multipoint asynchronous, 2-wire, or 4-wire leased communications line.
TINET supports line speeds up to 19200 bits per second.
transmission. A logical set of related messages. A BISYNC transmission is usually delimited
by an EOT (end of transmission) control character.
tributary. One of multiple stations, which are controlled by a single, centralized supervisor
station in a multipoint data link.
WAN manager (WANMgr). Provided as part of the WAN subsystem, the WAN manager
process is started and managed by the NonStop Kernel subsystem SCF interface. It is
started as a generic process and runs as a NonStop process pair in the system processors.
The WAN manager process starts and manages the WAN subsystem objects including
the ConMgr and WANBoot processes. It is also used to start the WAN subsystem
PROCESS and DEVICE objects. SCF commands are directed to the WAN manager
process for configuring and managing the WAN subsystem and the SWAN concentrator.
The WAN manager process is named $ZZWAN. See also WAN subsystem
and ConMgr
process.
WAN manager process. Provided as part of the WAN subsystem, the WAN manager process
is started and managed by the NonStop Kernel subsystem SCF interface. It is started as a
generic process and runs as a NonStop process pair in the system processors. The WAN
manager process starts and manages the WAN subsystem objects including the ConMgr
and WANBoot processes. It is also used to start the WAN subsystem PROCESS and
DEVICE objects. SCF commands are directed to the WAN manager process for
configuring and managing the WAN subsystem and the SWAN concentrator. The WAN
manager process is named $ZZWAN.
WAN subsystem. The WAN subsystem is used to configure and manage I/O processes and
provides access to the SWAN concentrator. The WAN subsystem consists of several