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The third DS level, a framing specification for digital signals in the North American digital transmission hierarchy. A DS3 signal has a transmission rate of 44.736 Megabits per second.

DS3 is used, for example, on T3 synchronous Integrated Services Digital Network lines.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)


(1) See Nintendo DS.

(2) (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. See OC.

NORTH AMERICA, JAPAN, KOREA, ETC.VoiceService  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        SpeedService  Channels    (Mbps)

 E1         30         2.048
 E2        120         8.448
 E3        480        34.368
 E4       1920       139.264
 E5       7680       565.148

 SONET CIRCUITSOptical  Electrical    SpeedChannel  Channel      (Mbps)

 OC-1      STS-1        51.84
 OC-3      STS-3       155.52
 OC-3c     STS-3c      155.52
 OC-12     STS-12      622.08
 OC-12c    STS-12c     622.08
 OC-48     STS-48     2488.32
 OC-192    STS-192    9953.28
 OC-768    STS-768   39813.12

 OC  = Optical Carrier
 STS = Synchronous Transport Signal
   c = concatenated
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References in periodicals archive ?
Citroen, or DS Automobiles if we follow the company line and drop the name Citroen, hasn't sold a proper hot version of its DS3 since the low-volume DS3 Racing almost six years ago.
But even Citroen must have been surprised at the success of the DS3, which turned out to be nothing short of a sensation doing much to invigorate and redefine the marque.
The aim is to add more premium appeal to the line-up by shedding the Citroen moniker - and the DS3 should give the new brand some real impetus.
Expect to pay somewhere in the PS15,000 to PS20,000 bracket for your DS3 Cabrio, so you're looking at a premium of around PS2,500 over the fixed-top version that many will assume this car is at first glance.
Now there's a way to get behind the wheel of the DS3 for less money as the DS3 DSTYLE (82bhp) 1.2-litre VTi is currently available with a deposit of PS189 and monthly payments of PS189.
The three-cylinder PureTech petrol engine has already been lauded in the press for its sterling service in the Peugeot 308, so a 110PS version appearing in the DS3 is a welcome addition to the range, especially in place of the previous, naturally aspirated 120PS VTi unit.
All in, the DS3 BlueHDi 120 delivers a very sharp driving experience for what is ostensibly an eco special.
The ability to personalise the DS3 in almost inexhaustible ways means that it has become a major competitor to the British-built MINI.
The DS3 is getting an uprated 1.6-litre turbo petrol engine that makes it not only livelier on the road but also more economical.
The second special edition, the DS3 DSTYLE by Benefit, is inspired by 'They're Real!' mascara and powered by a VTi 120 engine.