| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 7437-1987 | English | RFQ |
ASK
|
Days<=3
|
The transmission performance objectives for public analogue toll telephone automatic switching network
|
GB/T 7437-1987
| Obsolete |
GB/T 7437-1987
|