| telephone service fuse | Fernmeldesicherung |
| telephone services | Telefondienste |
| telephone set | Telefon |
| telephone sex | Telefonsex |
| telephone shop | Telefonladen |
| telephone sidetone | Rückhören |
| telephone signal | Fernsprechsignal |
| telephone socket | Telefonbuchse |
| telephone stands | Telefonständer |
| telephone station | Sprechstelle |
| telephone statistics | Fernsprechstatistik |
| telephone store | Telefonladen |
| telephone subscriber | Fernsprechteilnehmer |
| telephone subscribers | Telefonanschlussinhaber |
| telephone subscription | Grundgebühr |
| telephone support | Telefonservice |
| telephone surveillance | Telefonüberwachung |
| Telephone switch | Vermittlungsstelle |
| telephone switch box | Telefonvermittlungsschrank |
| telephone switchboard | Fernsprech-Vermittlungsschrank |
| telephone switchboards | Telefonanlagen |
| telephone switches | Vermittlungsstellen |
| telephone switching engineering | Fernsprechvermittlungstechnik |
| telephone switching exchange | Fernsprechvermittlungsstelle |
| telephone swivel arm | Telefonschwenkarm |
| telephone system | Telefonanlage |
| Telephone tapping | Telekommunikationsüberwachung |
| telephone terminal equipment | Fernsprechendgerät |
| telephone time service | telefonische Zeitangabe |
| telephone trade | Telefongeschäft |
| telephone traffic | Fernsprechverkehr |
| telephone transmission | Fernsprechübertragung |
| telephone transmission engineering | Fernsprechtechnik |
| telephone transmission technique | Fernsprechtechnik |
| telephone transmitter | Sprechkapsel |
| telephone tree | Telefonkette |
| telephone volume amplifier | Telefonlautverstärker |
| telephone wall jack | Telefonanschlussdose |
| telephone wall jacks | Telefonanschlussdosen |
| telephone wire | Telefondraht |
| telephone's ear-piece | Telefonmuschel |
| telephone's mouthpiece | Telefonmuschel |
| telephoned | angerufen |
| telephoned telegram | telefonisch zugestelltes Telegramm |
| telephoned telegram service | Telegrammannahme |
| telephonee | Angerufene |
| telephoner | Anrufer |
| telephones | telefone |
| telephonic | telefonisch |
| telephonic communication | Fernsprechverbindung |
| telephonic hybrid | Fernsprechgabel |
| telephonic path | Fernsprechweg |
| telephonic signal | Fernsprechsignal |
| telephonic special service | Fernsprechsonderdienst |
| telephonic station | Fernsprechstelle |
| telephonic traffic | Fernsprechverkehr |
| telephonically | fernmündlich |
| telephoning | anrufend |
| telephonist | Telefonist |
| telephonists | Telefonisten |
| telephony | Fernsprechen |
| telephony application | Telefonieanwendung |
| telephony server | Telefonieserver |
| telephony service | Telefonie |
| telephony software | Telefonie-Software |
| telephony solution | Telefonie-Lösung |
| telephony system | Telefonsystem |
| telephony systems | Telefonsysteme |
| telephoto | Teleobjektiv |
| telephoto lens | Teleobjektiv |
| telephotographic | telefotografisch |
| telephotographically | telefotografisch |
| telephotographs | Fernbilder |
| telephotography | Bildtelegrafie |
| Telephus | Telephos |
| Telepinu | Telipinu |
| telepoint | Telepoint |
