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
ADM-2 Multipoint Supervisor Protocol
Envoy Application Programming Manual—427159-001
7-3
ADM-2 Multipoint Supervisor Polling
ADM-2 Multipoint Supervisor Polling
The application initiates polling by calling the READ procedure while the line is in the
CONTROL state. This call also reads the message from the responding terminal.
Figure 7-1
shows ADM-2 multipoint supervisor polling.
Figure 7-1. ADM-2 Multipoint Supervisor Polling
042CDT .CDD
No
2
Yes
Did a Polled
Station
Respond with
Text?
READ Completes
The Request from
the Terminal is
Processed
CALL DEFINELIST...
CALL OPEN... nowait
CALL READ...
The Network is
Polled
1