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Thursday, March 30, 2006

Classification of DS (Digital Signal)

This only serves as guide for those DS signal, sometime I forgot their respective bandwidth allocation, so here are the following:

(Digital Signal) A classification of digital circuits. The DS technically refers to the rate and format of the signal, while the T designation refers to the equipment providing the signals. In practice, "DS" and "T" are used synonymously; for example, DS1 and T1, DS3 and T3.

NORTH AMERICA, JAPAN, KOREA, ETC.

Voice
Service Channels Speed
DS0 1 64 Kbps
DS1 24 1.544 Mbps (T1)
DS1C 48 3.152 Mbps (T1C)
DS2 96 6.312 Mbps (T2)
DS3 672 44.736 Mbps (T3)
DS4 4032 274.176 Mbps (T4)

EUROPE (ITU)

Voice
Service Channels Speed (Mbps)
E1 30 2.048
E2 120 8.448
E3 480 34.368
E4 1920 139.264
E5 7680 565.148



SONET CIRCUITS


Service Speed (Mbps)
STS-1 OC1 51.84 (28 DS1s or 1 DS3)
STS-3 OC3 155.52 (3 STS-1s)
STS-3c OC3c 155.52 (concatenated)
STS-12 OC12 622.08 (12 STS-1s, 4 STS-3s)
STS-12c OC12c 622.08 (12 STS-1s, 4 STS-3c's)
STS-48 OC48 2488.32 (48 STS-1s, 16 STS-3s)

-
Info about OC
(Optical Carrier) The transmission speeds in SONET/SDH networks.


 SONET CIRCUITS

Optical Electrical
Channel Channel Speed (Mbps)

VT-1.5 1.7
OC-1 STS-1 51.84 (28 DS1s or 1 DS3)
OC-3 STS-3 155.52 (3 STS-1s)
OC-3c STS-3c 155.52 (concatenated)
OC-12 STS-12 622.08 (12 STS-1, 4 STS-3)
OC-12c STS-12c 622.08 (12 STS-1, 4 STS-3c)
OC-48 STS-48 2488.32 (48 STS-1, 16 STS-3)
OC-192 STS-192 9953.28 (192 STS-1, 64 STS-3)
OC-768 STS-768 39813,12 (768 STS-1, 256 STS-3)


OC = Optical Carrier
STS = Synchronous Transport Signal

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