| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YD/T 1231-2002 | English | RFQ |
ASK
|
Days<=3
|
Technical specification for call transfer services through fixed network exchange
|
YD/T 1231-2002
| Valid |
YD/T 1231-2002
|