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ACC X.25 Protocol User's Guide

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HP Part Number: Z7487-90004

Edition: Edition 10

Published: E0400

© Copyright 2000 Hewlett-Packard Company.

Table of Contents

Publishing History

Introduction
Supported Devices
References

2 Installation

Introduction

Installation Depot Contents

Software Loading Procedure

Installation Verification

Verification Steps

Using the X.25 Protocol Module

3 ZX25D X.25 Protocol Driver

Configuration

Reserved Logical Data Area Definition
Interface Definitions
Port Definitions
X.25 Link Term Definitions
X.25 Link Device Option Word Definition

Virtual Circuit Definitions

Configuration Parameters Definition
Poll Word for X.25 PVC Configuration
Poll Word for X.25 SVC Configuration
Select Word for X.25 PVC Configuration
Select Word for X.25 SVC Configuration
VC Device Option Word Definition

Sample X.25 TTGEN Configuration File

Implementation Notes

Overview
Timeout Processing
Summary of Timer Values
Error Handling

Special ZMNTR X.25 Facilities

4 X.25 Application Programming

Introduction

Programmatically Configuring X.25

Configuring the X.25 Link
Configuring X.25 Virtual Circuits

X.25 Link Initialization

Sending and Receiving Data

Receiving and Confirming Interrupt Data
Sending Interrupt Data
Application Use of the M, Q, & D-Bits
M-Bit Handling
D-Bit Handling
Application End-to-End Acknowledgments Disabled (APD=0)
Using Application End-to-End Acknowledgments (APD=1)
Q-Bit Handling

Using the X.25 ZCOM API Routines

X.25 Manual Pages
Facility Handling

X25STAT (3X)

ZX25CALLACC (3X) — ACC X.25

ZX25CALLOUT (3X) — ACC X.25

ZX25CALLREJ (3X) — ACC X.25

ZX25CLOSE (3X) — ACC X.25

ZX25DBIT_ACK (3X) — ACC X.25

ZX25INFO (3X) — ACC X.25

ZX25INT_CONF (3X) — ACC X.25

ZX25L2STAT_RCVR (3X) — ACC X.25

ZX25RESET (3X) — ACC X.25

ZX25RESET_CONF (3X) — ACC X.25

ZX25SEND_INT (3X) — ACC X.25

A X.25 Status and Completion Messages

Introduction

Buffer Completion Statuses

Unsolicited Status Messages

X.25 Link Status
Miscellaneous and Protocol Error Status Messages
Virtual Circuit Status Messages

List of Figures

A-1 Packet Data layout

List of Tables

4-1 Tag Byte in Send Messages
4-2 Tag Byte in Receive Messages

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© 2000 Hewlett-Packard Development Company, L.P.