| Subject | English | Portuguese |
| el. | D-4 channel bank | banco de canais D-4 |
| IT | d channel protocol | protocolo d |
| IT | D-channel | canal D |
| comp., MS | D-channel | canal D (A separate channel of an Integrated Services Digital Network (ISDN) line that is used for ISDN signaling. For ISDN Basic Rate Interface (BRI), the D-channel is 16 kilobits per second (Kbps). For ISDN Primary Rate Interface (PRI), the D-channel is 64 Kbps) |
| commun., IT | d-channel access procedure | procedimento de acesso ao canal d |
| commun., IT | D-channel protocol | protocolo de canal D |
| commun., IT | link access protocol on the D channel | protocolo LAP-D |
| commun. | packet bearer service on D channel | serviço de suporte de pacote no canal D |