| Subject | English | German |
| comp., MS | null modem | Null-Modem (Special cabling that eliminates the modem's need for asynchronous communications between two computers over short distances. A null modem cable emulates modem communication) |
| tech. | null modem | Nullmodem |
| gen. | null modem | Null-Modem |
| IT | null modem cable | Nullmodem-Kabel |
| tech. | null modem cable | Kreuzungskabel |