Standard of digital leased circuit of transmission speed 1.5Mbps. Also “DS1” is called. In the specification which the American National Standards Institute (ANSI) decides, those which multiplex 24 these 64kbps circuits . It has the communication capacity of 1.544Mbps accurately. To be wide it has spread in Japan and North America. In Japan, it is used for the high-speed digital private line and the ISDN circuit for enterprise. In Europe it has the capacity of 64kbps circuit 32 line pencil news item 2Mbps in place of this, “E1” standard has spread. In the product of the international communication equipment manufacturer like “T1/E1 correspondence”, those which correspond to both standard are many.
|
DS2 <T2>
Field:
Communication service > private line > DS2 |
| Standard of digital leased circuit of transmission speed 6Mbps. Also “DS2” is called. The American National Standards Institute (ANSI) in the specification which is decided, 4 these T1 circuits those which are multiplexed. It has the communication capacity of 6.312Mbps accurately. It is the specification which is used in and North America. It is not the case that in Japan, it is used by the interconnect and the like between the common carriers, is used excessively generally. |
DS3 <T3>
Field:
Communication service > private line > DS3 |
* Related terminology
* American National Standards Institute
* ANSI
* T2
* T1
Standard of digital leased circuit of transmission speed 45Mbps. Also is called. The American National Standards Institute in the specification which is decided, 7 these T2 circuits those which are multiplexed. It has the communication capacity of 44.736Mbps accurately. It is the specification which is used in Japan and North America. Lining up with T1, with the circuit which is used well, for the connection between base of big business it is used and the interconnect etc between the common carriers. |
DS3D <DirectSound 3D>
Alias:
Direct sound 3D
Field:
Windows > Media technology > DS3D
|
API one which is included in DirectX which is the multimedia extended API group for Windows of the Microsoft corporation. It is the API group which adds the sound effect with respect to 3 dimensional spaces to
As for the sound which we hear in the actual world, from the sound source direction of distance and the sound source and the Doppler effect etc with the movement of the sound source influence is received. The effect due to such primary factor the fact that it was developed in order to reappear easily with acoustic function of the game and the like is DirectSound 3D. In order 3 dimensional graphics (3DCG) to use the same system of coordinates as Direct3D which is API which is handled, it is |
DS4 <T4>
Field:
Communication service > private line > DS4
|
| Standard of digital leased circuit of transmission speed 274Mbps. Also “DS4” is called. The American National Standards Institute (ANSI) in the specification which is decided, 6 these T3 circuits those which are multiplexed. It has the communication capacity of 274.176Mbps accurately. It is the specification which is used in Japan and North America. It is used in Internet backbone circuit and the like which the major common carrier possesses. |
