I checked on of my "bibles", Integrating Voice and Data Networks by Scott Keagy (Cisco Press) and I will quote from the book, which maybe can explain it better than I can."In the absence of traffic shaping, the effective clock rate is simply the cloc...
Yes the individual frames on a T1 leave at the 1554000/s speed, but if you traffic shape and send traffic in bursts, and leave spaces of empty time in between (no data being sent), over a period of one second the 1554000/s effective bandwidth becomes...