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Technology Stocks : Voice-on-the-net (VON), VoIP, Internet (IP) Telephony
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To: crs who wrote (211)11/30/1997 1:36:00 PM
From: Ray Burke   of 3178
 
>Atin, it may be a pain, but if you can give a brief explanation of >some of
> the basic terms starting at t1, it would be a great help. Even if >they are
> brief, it may help a few of us including me who need to bone up or >learn
> new things. A few definitions of some of the terms will help many
> understand the posts a bit better.
Us hillibillies kan reed if nothing else reed this linc
T1
A digital carrier facility used to transmit a DS1 formatted digital signal at 1.544Mbps. Equivalent to
24 voice channels (DS0) digitized at 64Kbps.
T1C
3.153Mbps, equivalent to 2 T1s or 48 voice channels.
T2
6.312Mbps, equivalent to almost 4 T1s or 94 voice channels.
T3
A digital carrier facility used to transmit a DS3 formatted digital signal at 44.746Mbps. Equivalent to
672 voice channels or 28 T1s.
T4
273Mbps, equivalent to 6 T3s or 4032 voice channels.
OC-1
(Optical Carrier level 1) (STS-1) 51.84Mbps SONET.
OC-3
(Optical Carrier level 3) (STS-3 or STM-1) 155.52Mbps SONET.
OC-12
(Optical Carrier level 12) (STS-12 or STM-4) 622.08Mbps SONET.
OC-24
(Optical Carrier level 24) (STS-24 or STM-8) 1244.16Mbps SONET.
OC-48
(Optical Carrier level 48) (STS-48 or STM-16) 2488.32Mbps SONET.
peak.org
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