| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB/T 5443-1985 | English | 319 |
Add to Cart
|
Days<=3
|
The test methods for the technical specifications of ringing and tone for automatic telephone switching network
|
GB/T 5443-1985
| |
GB/T 5443-1985
|