| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| TB/T 1689-1993 | English | 219 |
Add to Cart
|
Days<=3
|
Railway Telephone Switching Network - Inband Pure Tone Pulse Line Singaling
|
TB/T 1689-1993
| |
TB/T 1689-1993
|