[altq 1072] Re: Accuracy of atobps(const char*)

[Kenjiro Cho <kjc@csl.sony.co.jp>]

Stefan Stefanov wrote:
> I think the right one is:
> 1kbit/sec = 1000 bit/sec
> 1Mbit/sec = 1024 kbit/sec
> 
> and so on.
> 
> AFAIK this one comes from the telco standards as the primary rate for a
> voice channel 64kbit/sec is 64000 bits/sec and an E1 has 32 x 64000
> which is 2048000 bits/sec (2 x 1024 x 1000).
> 
> This might sound confusing with the metric system, but in practice
> should be true. 

802.3 doesn't use that strange convention.

Ethernet	   10,000,000 bps
FastEthernet	  100,000,000 bps
GbEthernet	1,000,000,000 bps

For example, FastEthernet is clocked at 125,000,000Hz with the 4B/5B
encoding, which results in 100,000,000 bits per second.

-Kenjiro