Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
端口电信号数据
| 故障类别标签 | 端口电信号 |
| 0（正常） | V00、V10、V20······V420、V430、V440 |
| 1（U4 故障） | V01、V11、V21······V421、V431、V441 |
| 2（U8 故障） | V02、V12、V22······V422、V432、V442 |
| 3（U17 故障） | V03、V13、V23······V423、V433、V443 |
| 4（U16 故障） | V04、V14、V24······V424、V434、V444 |
| 5（U6 故障） | V05、V15、V25······V425、V435、V445 |
| 6（U14 故障） | V06、V16、V26······V426、V436、V446 |
