| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 3557-2019 | English | RFQ |
ASK
|
Days<=3
|
(Protocol requirements for interworking interfaces between rich telecommunication services (RCS) networks of different operators)
|
YD/T 3557-2019
| Valid |
YD/T 3557-2019
|