Chief Transmission and Switching Engineer(JP

Let's do study and measures of "Telecommunication chief engineer examination" where a good teaching material doesn't exist though the examination contents is advanced little by little.

2010/08/30

H.323 is confusing.

Well, because it is necessary to pass the subject of a transmission exchange and a natural plant management when it will pass the chief telecommunications engineer though this blog is being published around the material of "Exchange" of the specialized subject now though thought the lack in the article before the chief telecommunications engineer (transmission exchange) is studied today, well, and because the problem of the specialized subject like transmission, the exchange, and the data communication, etc. is set here and there ..the transmission exchange and the plant management.., it sleeps and, then, today's material is [kochira] ↓↓ of ・・・ well though thought that the topic of "Transmission exchange and plant management" and "Regulations" sooner or later is published. it is necessary to do study of the exchange of everyone after all



- Protocol of H.323




The H.225.0RAS control is a protocol used between the H.323 end point and the H.323 gateway.

These sentences are wrong.
- The H.225.0RAS control is a protocol used between the H.323 terminal and H.323 [ge-toki-pa].
- "Gateway" of sentences of the problem is unrelated. because of regulations of "Address resolution", "Registration of the end point", and "Communication permission", etc. by the H.225.0RAS control by "Between the terminal and [ge-toki-pa]"
- "Registration, permission, and state" is roughly the meanings as it is because "RAS" is " R egistration, A dmission, S tatus", and I think fortune-telling [ito] to be an imagination as for other party's of "Caller's telephone number and the relation with Internet Protocol address, etc. are managed" [ge-toki-pa] protocol it.



The H.323 end point acquires Internet Protocol address of connected other party terminal by the H.225.0RAS control procedure, and registers user ID and address information etc. on the H.323 end point.

These sentences are correct.
- Sentences above are understood and ..dripping.. [dai] is strong.
- Internet Protocol address of H225.0RAS = other party of connection terminal is acquired, and user ID and address information etc. on H and 323 end points are registered.



After calling establishing [no], the protocol that does making to the packet and the packet forwarding when the voice data and the image data between H.323 end points are transmitted is H.245 control.

These sentences are wrong.
- After calling establishing [no], the protocol that does making to the packet and the packet forwarding when the voice data and the image data between H.323 end points are transmitted is H.324 control.
- H.324 is a video conferencing telephone standard in the cellular phone network, and it is unrelated to H.323.
- H.245 exchanges information of opening and shutting of the logical channel who transports a code, a flow control, jitter management, a set demand, and the media stream as various information necessary for the multimedia communication. The transmission and the reception are separately defined, and offer the means to transmit above-mentioned detailed information to other H.323 support equipment.



The protocol of the H.245 control and the H.225.0RAS control is forwarded by the TCP protocol that has the function etc. of sending again of data.

These sentences are wrong.
- The protocol of the H.245 control and the H.225.0RAS control is forwarded by the TCP protocol that has the call out system management etc.
- This "TCP protocol that has the call out system management etc." [Tteno] is ..H.225.0.. [yosei] though it becomes on if sentences of the problem are correct and it mends.
- [Anmari] doesn't relate to [de] and "Function of sending again of data" [tteno].



Well, it is the sleep of this material ..H.323 it.. ..difficult of the problem related to H.323.. ・・・ Remembering is what because it has divided Confusing, and "It is H.xxx to be used between xx and xx" very in detail because the name of "H.323" "H.245" "H.225" or the protocol looks like ..the desire.. very. It might be easy to remember when the sequence chart of my own way is made when studying and it brings it together systematically. Then, it is please ↓↓ as for the material of another one H.323.



- System that achieves communication by protocol of H.323



The H.323 terminal is a device that the user uses to do a real-time voice transmission, the image transmission, and the data communication.

These sentences are correct.
- ..floatage.. ?As for [n] and "XXX terminal", does the user use and [rutte] protocol isn't so?



The H.323 gateway has the voice and the transducer function of the form of the transmission of information on the image needed to communicate between the H.323 terminal and the terminal of an existing line switching network like the telephone network etc.

These sentences are correct.
- The voice and the transducer function of the form of the transmission of information on the image are done, and the gateway is needed to communicate between terminals of an existing line switching network like the telephone network etc.



H.323MCU has a broadcast function etc. necessary to achieve the multi point communication (communication done with three terminals or more).

These sentences are correct.
- MCU communicates a multi point.



"Japanese problem" does the nature in the H.323 problem that is certainly difficult and not remembered easily if it often reads. If which protocol is remembered what work to be being done in faint, does this problem have what in it makes a mistake?Well, it is not study only to solve the problem and it is the examination measures to prepare the table, and to make the study tool that understands easily in the in one's own way. Then, around here today

No comments:

Post a Comment

Labels

Search This Blog

Followers