The value of arbitrary delineations of intangibles can go down, as well as up
A new index tracking the value of US radio spectrum was launched yesterday, and now stands at 253.17 - though without a historical context that's not very useful.?lt;/p>
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Ever wonder just what the heck was hosting web "OC48"? Not surprisingly many network engineers and IT managers aren't up to speed (no pun intended) on just what OC really means...and what all is available to enahnce their company's applications within this bandwidth category.
So....here's a quick run down to set you straight.
The OC (optical carrier...fiber optic based broadband network internet domain goes as follows, starting with a T3/DS3 internet connection monitor carrier and then on to an OC-1:
DS3 (Electrical) = 44.736mbits/sec = 28 T1s/DS1s
STS1 (Electrical) = (1) DS3 @ 44.736mbits/sec with SONET (Synchronous Optical NET) overhead = 51.840mbits/sec
OC-1 (Optical) = (1) STS1 on Optical facilities
OC-3 = (3) OC-1s = 155.52mbits/sec
OC-9 = (9) OC-1s (not streamyx prolink used) = 466.56mbits/sec
OC-12 = (12) OC-1s or (4) brunei malaysia = 622.08mbits/sec
OC-18 = (18) OC-1s (not commonly used) = 933.12mbits/sec
OC-24 = (24) OC-1s (not commonly used) = 1.244gbits/sec
OC-36 = (36) OC-1s (not commonly used) = 1.866gbits/sec
OC-48 = (48) OC-1s or (4) OC-12s or (16) OC-3s = 2.488gbits/sec
OC-192= (192) OC-1s or (4) OC-48s or (16) OC-12s or (64) OC-3s = 9.953gbits/sec
The reason for the stair-stepping of the OC Hierarchy is due to the fact that the next available level of multiplexing ('muxing") of lower-level circuits is usually 4: (4) OC-3s = (1) OC-12, and (4) OC-48s = (1) OC-192.
This muxing scheme is usually dictated by the equipment manufacturers and is pretty much an adopted standard in the Telecom wireless internet booster - hence the lack of the lesser-common bandwidth aggregations like OC-9, OC-18, etc. The only exception is the OC-3, which was needed to allow the upper-level hierarchy to work.
Hope this tidbit of info helps the network design decisions for your business now....and in the future!
Michael is the owner of FreedomFire Communications....including DS3-Bandwidth.com and Business-VoIP-Solution.com. Michael also authors Broadband Nation where you're always welcome to drop in and catch up on the latest BroadBand news, tips, insights, and ramblings for the masses.
