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H.320
Reading: - It is round in h
Field:
Network technology > VoIP/IP telephone > H.320
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The standard which decides the specification of terminal such as viewphone & were advised in 1990 by ITU-T,
System and the like of multiplexing the compressed coding system of the image voice data and the access method and the image sound etc to the ISDN network is decided. You can use to encoding the image, You can use to encoding the sound, G.711, But as for support among, H.261 and G.711 these necessity, support of standard after has become option.
H.320 was reformed by 1997, up-to-date image speech compression coding system and the like was added. In addition, also the specification regarding the compatibility of H.323 and H.324 of succession standard was included.
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H.323
Reading: In h -
Field:
Network technology > VoIP/IP telephone > H.323
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| It is utilized in mounting such as generally known viewphone, with respect to network audio animated picture 1 to with 1 sending and receiving one of the protocol which decides sound, image system and data compression expansion system etc in order to do.
In 1996 the beginning “H.323” with ITU-T to be approved and advised, continuously in 1998 January was approved and was advised.
H.323 the applied example is wide, from VoIP until the video conference with respect to network, the kind of design which can correspond has done. As acceleration of network and improvement etc of the computer advance, it reached the point where it is acknowledged as practical protocol. |
HA <High availability>
Reading: H a
Full spelling: High Availability
Alias:
High availability
Field:
Enterprise information system > computer system > reliability > HA
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High availability (availability) it is the computer system which it has.
As for availability of the computer system, system breakdown occurs until with, mean time “MTBF” with, breakdown occurring in the system, average duration “MTTR” to restoration (Mean Time To Repair: Average restoration interval) with it is measured. The ratio of MTBF for the harmony of both is called availability, can say that it is the extent high availability whose availability is high.
The high availability where as for the basic system of enterprise working 365th of 24 hour not to go to bed was required, 99.99% and 99.999% said is needed. Annual down time of the system of
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HailStorm <.NET My Services>
Field:
Windows > .NET > HailStorm
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| Microsoft .NET environment of the same company the Web service group which was constructed to the base. As for “HailStorm” cord/code name when developing. Schematic design was announced in 2001, like .NET Alerts part service was offered, but presently it has become shelving.
It is the service to which .NET My Services mounts application such as calendar and electronic wallet and the notification service which can be utilized from the Web browser in the form of Web service, offers to the user. These services besides the fact that it can utilize independently from the same company Web sight, after passing appropriate user identification even from the sight and the software outside, call making use of standard technology such as SOAP,
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HAL
Reading: Hull
Full spelling: Hardware Abstraction Layer
Field:
Windows > Media technology > HAL
Windows > Server > HAL
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| Entering the application software and between the hardware, it is the software which absorbs the difference of behavior every of hardware. It is the concept which is used with Windows NT and DirectX etc. but can be different the behavior of these processors because HAL absorbs, the production person of the application software to do development without designating the difference as the air. |
