HP CommonIO Products CCITT Recommendations

PAD Services

Introduction

NOTE

Introduction

This section describes X.25/9000 PAD (Packet Assembler/Disassembler) Services which enable HP 9000 computers to connect and communicate with remote systems over a Packet Switching Network (PSN).

Refer to “Configuring PAD Services” in Chapter 3 for information on configuring PAD Services with SMH.

PAD Services include the following commands and functions:

•x29server – for PAD support for remote terminals:

A daemon process that allows a local HP 9000 system to function as a host for (real or emulated) terminals attached to a remote PAD.

•x29printd – for remote PAD printer support:

A daemon process that allows local HP 9000 computers to print at printers attached to a remote PAD.

•x29uucpd – for PAD-UUCP connectivity:

A daemon process that allows HP 9000 computers to originate UNIX-to-UNIX copy services over an X.25 Switched Virtual Circuit (SVC).

•padem – for local PAD emulation:

A user command that allows a local HP 9000 system to emulate both a terminal and a PAD for connection with remote systems over a PSN.

CCITT Recommendations

X.25/9000 PAD Services are compliant with the X.25, X.28, X.29, and X.3 CCITT Recommendations of 1984.

Recommendation X.28 defines the exchange of messages between PAD terminals and the PAD. A superset of the commands defined by this protocol are performed by padem.

130 Chapter 6