hey, Cil, I'm asking because I don't know, but aren't all links serial by nature - be they ATM or ethernet or token ring or whatever. IE data is placed onto and taken from the wire one bit at a time?
parallel printing used eight wires for transmitting of data ( plus other wires for control ) and if memory serves, had a limited distance - 25 feet tops IIRC. if we look at al other technologies, they are all based on a single transmit wire and a single receive wire - hence the one bit at a time limitation. is my thinking accurate? Chuck ""Priscilla Oppenheimer"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > WANs (and LANs) use serial communication (one bit at a time). The only > thing I can think of that uses parallel communication is old-style printers. > > A serial interface can still be very fast. On the WAN side, RS-232 only > supported speeds up to 64 Kbps. But RS-449 supports speeds up to 2 Mbps. > Most WAN interfaces support RS-499, which is known as EIA/TIA-499 today. > And then there's also HSSI which is 52 Mbps, and probably others that I > can't think of off the top. > > Priscilla > > At 07:01 PM 4/16/02, rtiwari wrote: > >Why WAN connection is called serial link. Is it same like > >RS-232 serial link. If it's same then at a time we can transmit > >only one bit.In this case WAN link will be having slower > >bit transmission. > >or WAN - serial link and RS-232 serial link are different. > >Please reply > >-Ravi > ________________________ > > Priscilla Oppenheimer > http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=41676&t=41670 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
