 |
| |||
| fernsprechüberlagerte Daten; dem Sprachband überlagerte Datenübermittlung (Centrex service attribute, data rate typically 19.2 kbit/s; at 40 kHz carrier frequency in DTAG TEMEX and public phonecard telephones) | |||
| 英语 词库 | |||
| |||
| DOV (MODEM); DOV (Telephony) | |||
| DOV | |||
| DIV | |||
|
Data Over Voice : 3 短语, 1 学科 |
| 通讯 | 3 |