As per the link, "ISDN is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.
After few lines, it also says "It offers circuit-switched connections (for either voice or data), and packet-switched connections (for data), in increments of 64 kilobit/s."
Here is my confusion. I know PSTN is circuit switched. If that is true, why does the article say that ISDN offers packet-switched connections for data? Am i missing something?
I'm working on a project that includes basic router configurations. I configurated everything including: line console 0, line vty 0 15 and secret passwords. There are 3 routers in the network and every LAN is going t...