X25AM Programming Manual

X25AM Programming Manual—527201-001
3-1
3 PTP Applications
This section discusses:
Overview of PTP Protocol
Applications can exchange data with a remote device by using the process-to-process
(PTP) protocol to access X25AM. Higher level subsystems and applications, such as
OSI, TCP/IP, and X3PAD use the PTP protocol to interface with an X25AM process. A
remote device can be anything that exchanges data with an X.25 network.
An application can exchange data with a remote device using various formats:
•
Logical records
•
Parts of logical records
•
Packets
Topic Page
Overview of PTP Protocol
3-1
The PTP File-System Interface 3-2
PTP Data-Exchange Modes 3-5
PTP Application Programming 3-24
Programming Examples Using a Permanent Virtual
Circuit
3-43
Programming Examples Using a Switched Virtual
Circuit
3-47
Programming Example Written in TAL 3-60
Programming Example Written in C 3-71
Figure 3-1. An Overview of the PTP Protocol
VST0301.vsd
Remote
Device
X.25
Packet-Switched
Network
Application
X25AM
HP NonStop System