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Directory Assistance service (RFC1202)

IP.com Disclosure Number: IPCOM000002016D
Original Publication Date: 1991-Feb-01
Included in the Prior Art Database: 2019-Feb-11
Document File: 11 page(s) / 12K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M.T. Rose: AUTHOR

Related Documents

10.17487/RFC1202: DOI

Abstract

This document defines a mechanism by which a user-interface may access a textual DAP-like interface over a TCP/IP connection. This is a local mechanism. This memo provides information for the Internet community. It does not specify any standard.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 18% of the total text.

Network Working Group M. Rose Request for Comments: 1202 Performance Systems International, Inc. February 1991

Directory Assistance Service

Status of this Memo

This document defines a mechanism by which a user-interface may access a textual DAP-like interface over a TCP/IP connection. This is a local mechanism. This memo provides information for the Internet community. It does not specify any standard. Distribution of this memo is unlimited.

Table of Contents

1. Introduction .......................................... 1 1.1 An Aside ............................................ 3 2. Protocol .............................................. 3 2.1 Control Connection .................................. 4 2.1.1 Initialization .................................... 4 2.1.2 Transactions ...................................... 4 2.1.2.1 INTR command .................................... 4 2.1.2.2 STAT command .................................... 5 2.1.2.3 QUIT command .................................... 5 2.2 Data Connection ..................................... 5 2.2.1 Transactions ...................................... 5 2.2.2 Responses ......................................... 6 2.2.2.1 Numeric Responses ............................... 6 2.2.2.2 ’m’ Response .................................... 6 2.2.2.3 ’y’ Response .................................... 6 2.2.2.4 ’p’ Response .................................... 7 2.2.2.5 ’e’ Response .................................... 7 2.2.2.6 ’l’ Response .................................... 7 2.2.2.7 ’d’ Response .................................... 8 2.2.2.8 ’P’ Response .................................... 8 3. Example Interaction ................................... 9 4. References ............................................ 10 5. Security Considerations............................... 11 6. Author’s Address...................................... 11

1. Introduction

The OSI Directory [1] provides a powerful infrastructure for the retrieval of information objects. This infrastructure can be used to support, e.g., white pages applications, application entity lookup, and so on.

Rose [Page 1]

RFC 1202 Directory Assistance Service February 1991

The Directory service is provided to applications through the Directory Access Protocol (DAP), which binds a Directory User Agent (DUA) to a Directory System Agent (DSA).

| Directory Service | provided via DAP | +-----------+ | +-----------+ | | | | | | DUA | <----------+----------> | DSA | | | | | | +-----------+ | +-----------+ | Directory User |

The DAP is an OSI application layer protocol which uses the rich OSI upper-layer infrastructure. Unfortunately, the coding investment to implement the DAP is significant. As such, it is difficult to host applications using the Directory on smaller workstations and personal computers.

This memo details a local mechanism which has been successfully used to separate the functionality of the DAP from the complexity of implementing the DAP....

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