YD/T 669-1994
Quality grading criteria of 2048 kbit/s 30-channel PCM multiplex equipment (English Version)

Standard No.

YD/T 669-1994

Language

Chinese, Available in English version

Release Date

1994

Published By

Professional Standard - Post and Telecommunication

Status

Withdraw 2009-12

Latest

YD/T 669-1994

Scope

This standard specifies the product quality level and quality level requirements for 2048kbit/s30-channel pulse code modulation multiplexing equipment. This standard applies to PCM primary group multiplexing equipment and is the basis for assessing PCM primary group multiplexing equipment. This standard does not apply to product sorting.

YD/T 669-1994 history

• 1994 YD/T 669-1994 Quality grading criteria of 2048 kbit/s 30-channel PCM multiplex equipment