PSTN will convert the digital signal from VoIP into voice signal. Their networks interacts using satellite frequency.
In a remote switching facility Network + Guide To Networks Fifth Ed. Review Question Chapter 7 #14
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.
Local loopLocal loopNetwork + Guide To Networks Fifth Ed. Review Question Chapter 7 #2
NO PSTN NETWORKS ARE NOT RELIABLE. The PSTN is he telephone network that links the world together. The 1st answer has some truth to it, but most of the time (except in the case of fios of other fiber services) you do use the PSTN (Public Switched Telephone Network) to connect to the internet as is in the case of dial up and dsl. However the internet is partly a pstn network and when is the last time the entire internet went down, all across the world. The internet is the worlds most reliable network, and the largest. How the PTSN works, is a whole book (or two) in its own, being compromised of millions, possibly billions of miles of cable and many various satellite, radio, and cable networks within its self. The electrical grid is much less reliable since outages happen several times a year while I've only had mabye 1 phone outage in my life.
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.