YD/T 688-1994
Quality grading criteria of digital SPC telephone exchanges (English Version)

Standard No.

YD/T 688-1994

Language

Chinese, Available in English version

Release Date

1994

Published By

Professional Standard - Post and Telecommunication

Status

Withdraw 2009-12

Latest

YD/T 688-1994

Scope

This standard specifies the product quality level and quality level requirements for digital program-controlled telephone exchanges. This standard applies to digital program-controlled telephone exchanges (for office use). This standard is the basis for assessing the quality level of digital program-controlled telephone exchanges. This standard does not apply to product sorting.

YD/T 688-1994 history

• 1994 YD/T 688-1994 Quality grading criteria of digital SPC telephone exchanges