| Subject | English | French |
| commun. | a residential service that will interconnect to ISDN/PSTN | un service résidentiel interconnecté avec le RNIS/RTPC |
| comp., MS | PSTN connectivity | connectivité PSTN (Connectivity with the public switched telephone network (PSTN) through integration with an audio conferencing provider) |
| commun. | PSTN modem | modem de réseau téléphonique public avec commutation |
| commun. | PSTN modem | modem RTPC |
| telecom. | PSTN subscriber | poste à deux fils |
| comp., MS | SIP/PSTN gateway | passerelle SIP/PSTN (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)) |
| IT | traffic routing in PSTN | acheminements dans le RTC |