[mythtv-users] CentOS 6 released
Jason Long
jlong at jasonlong.com
Tue Jul 12 03:10:38 UTC 2011
On 7/11/11 7:35 PM, Jay Ashworth wrote:
> Though, these days, it's almost never actually a T-3 bringing you your DS-3/
> STS-1. It usually fiber.
That's not correct. A DS3 is delivered via copper coax. The fiber is
from the LEC (local exchange carrier) to a MUX which services the
location, from where the carrier can provision off a variety of services
to 1 or more customers, such as a DS3. Depending on the planned
forecast, this fiber link could be an OC3 or something larger like OC48
or OC192. Sure, once your bits hit that fiber they travel close to the
speed of light, but your DS3 signal still only allows you to transmit
bits onto the wire at a line rate 44.54Mbps (after signaling overhead),
so it's a moot that fiber is even involved.
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