YD/T 3555-2019
IMS-based VoLTE network and 2G/3G/4G network voice service interoperability test method (English Version)

Standard No.

YD/T 3555-2019

Language

Chinese, Available in English version

Release Date

2019

Published By

工业和信息化部

Latest

YD/T 3555-2019

YD/T 3555-2019 history

• 2019 YD/T 3555-2019 IMS-based VoLTE network and 2G/3G/4G network voice service interoperability test method