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=41675&t=41670 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
