PSTN stands for a public switched telephone network. A PSTN gateway is hardware components that third parties use to translate signaling.
By the way, call from VOIP can be received by pstn modem. But pstn cannot make a call to VoIP number.
pstn is for wired network plmn is for mobile network
ISDN is dial up lines and PSTN is a broadband line.
Marginal.
Marginal.
Its wide availability.
Since the basic PSTN (plain old telephone network) network link supports 64 Kbps bandwidth, I would say that is your answer.
I think PSTN mainly serves to wired land-line(telephone) and MSC serves to cellular(mobile) network.
A PSTN may use a POTS line (dial-up connection), however, the PSTN may use other technologies as well. So, POTS refers to a way of connecting to an ISP or other service using a dial-up connection, whereas the PSTN refers to the phone company providing several kinds of data service connections.
PSTN
PSTN will convert the digital signal from VoIP into voice signal. Their networks interacts using satellite frequency.