When connected to the MSAT G2 PSTN Interface, the MSAT-PSTN Interface provides traditional dialing capability, dial tone, and ring tones. It further augments the MSAT-G2 radio’s effectiveness by allowing users to remotely initiate or receive voice calls utilizing a portable cordless telephone. Additionally, the MSAT-PSTN Interface enables Push-to-Talk (PTT) functionality using an analog telephone. Users can initiate/respond to PTT calls and toggle between talkgroups using specific telephone key sequences.