| German | English |
| SIP-Adresse | SIP address (A URI that identifies an end node in a SIP network. The format of a SIP address is identical to that of an e-mail address) |
| SIP-Domäne | SIP domain (A domain that is configured to accept SIP traffic) |
| SIP/PSTN-Gateway | SIP/PSTN gateway (A device that translates signaling and media in different formats between the Enterprise Voice infrastructure and a public switched telephone network (PSTN) or private branch exchange (PBX)) |
| SIP-Telefon | SIP phone (A desktop telephone that, in addition to providing standard telephony features, connects to the Internet through SIP) |
| SIP-Telefon für Unified Communications | Unified Communications SIP phone (A SIP phone that integrates with the Communicator client) |
| SIP-Trunking | SIP trunking (A mechanism for connecting the voice network of an enterprise to a service provider that offers public switched telephone network (PSTN) origination, termination, and emergency services without deploying PSTN gateways) |
| SIP-Trunking | Session Initiation Protocol trunking A mechanism for connecting the voice network of an enterprise to a service provider that offers public switched telephone network (PSTN) origination, termination, and emergency services without deploying PSTN gateways (Session Initiation-Protokoll) |
| UC-SIP-Telefon | UC SIP phone (A SIP phone that integrates with the Communicator client) |
