HDB3
| Code
| HDB3 | |
| commun. | code HDB3; mode HDB3 |
| Code | |
| automat. | chiffre |
| construct. | code régulier |
| IT engl. | code |
| telecom. | indicatif |
| |||
| code HDB3; mode HDB3 | |||
|
HDB3 : 3 phrases in 2 subjects |
| Electronics | 1 |
| Information technology | 2 |