| English | German |
| dual boot | Dual-Boot (A computer configuration in which two different operating systems are installed and either can be loaded at start-up) |
| dual forking | duale Verzweigung (A configuration by which Lync Server or Office Communications Server operates in co-existence with the PBX) |
| dual stack | dualer Stapel (For Windows CE .NET, an IP protocol stack that supports IPv4 and IPv6 independently or jointly. The DNS name resolution may yield both IPv4 and IPv6 addresses. Algorithms are used to determine source and destination addresses, thus determining which stack - IPv4 or IPv6 - to use) |
| dual-tone multiple-frequency | Mehrfrequenzverfahren (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies) |
