24th April 2003 at 16:56
#24225
Pat
Guest
The term PSTN typically refers to the Public Switched Telephone Network while a “Switch” can be a data/hub/routing device or possibily a PBX depending on whom you talk to.
I highly recomend Newtons Telecom Dictionary to cover questions related to voice and data. I work for a major manufacturer and it is my bible.