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adsl
pstn is for wired network plmn is for mobile network
Dialup is slow, ADSL is fast
ISDN is dial up lines and PSTN is a broadband line.
Speed is the difference between HDSL and ADSL. HDSL has high upload and download speeds whereas ADSL has a slow upload speed coupled with a high download speed.
What is difference between public ip and isdn
PSTN stands for Public switched telephone network PSDN stands for Public switched Data network / Packet Switched Data Network. The basic difference between two is the switching technique used. PSTN uses Circuit Switching and PSDN uses Packet Switching
ADSL is simply a version or 'flavour' of DSL. The 'a' refers to asymmetric, meaning 'not the same'. Hence, ADSL usually has different downstream and upstream rates (e.g. 1536/256 is a common speed of ADSL available in Australia, where downstream the link speed is 1536kbps and upstream is 256kbps).
The difference between internet service provided by ADSL and internet provided by cable is in the method of delivery. ADSL is high speed internet which is delivered through one's home phone. Cable is broadband internet delivered, as is stated, through cables.
ADSL.
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.