ICS 35.100.10                          LITD 13

Reaffirmed 2019

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 4902 : 1989 ‘Information technology - Data communication - 37-pole DTE/DCE interface connector and contact number assignments’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Information and Communication Technology Sectional Committee and approval of the Electronics and Information Technology Division Council.

This standard was originally published in 1983. The first revision of this standard has been undertaken to align it with the latest version of ISO 4902 : 1989.

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions and terminologies are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker while in Indian Standards, the current practice is to use a point (.) as the decimal marker.