not feasible(So 56 Kbps equals seven thousand bytes, or characters, per second. That is about five pages of this text per second: not so bad, perhaps, when most Internet content was text, but not feasible for multimedia content.A.Rezvov)
not valid(Erroneous or unrecognizable because of a flaw in reasoning or an error in input. Invalid results, for example, might occur if the logic in a program is faulty); invalid(Erroneous or unrecognizable because of a flaw in reasoning or an error in input. Invalid results, for example, might occur if the logic in a program is faulty)
