Technical rule
[CURRENT]
Article is not orderable
ITU-T G.227:1988-11
Conventional telephone signal
- German title
- Konventionelles Fernsprechsignal
- Publication date
-
1988-11
- Original language
-
English
- Pages
- 3
- Publication date
-
1988-11
- Original language
-
English
- Pages
- 3
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