It is a transmission exchange.

Well Well, let's study the chief telecommunications engineer today. the chief telecommunications engineer "" doesn't touch the railway track so much here by saying by the transmission exchange. ｡｡In handling chiefly by this blog, it is a problem for "Special subject exchange and transmission" and the problem of "Transmission exchange and plant management" is most. My having studied before becomes and because transmission was an exchange, that becomes a main by all means though it is thought that the topic of the data communication or the electric power is occasionally included. "How many years of the problem on earth are stocked?" increases the number of problems each day even to me when becoming accustomed to the management of this blog a little more though doesn't understand well because there is an excellent volume. Then, today's material is [kore] ↓.


ATM network and STM network

On the STM network, the speed menu offered to the user can offer a lot of speed menus in the ATM network though is generally limited 64Kbit/s and 1.5Mbit/s, etc.

These sentences are correct.
- The speed menu offered to STM network = user is generally limited to 64Kbit/s and 1.5Mbit/s, etc.
- A speed menu a lot of ATM network = can be offered.



Because the communication resource is occupied in the ATM network only when it is necessary, the burst data between networks can be efficiently transmitted compared with the STM network.

These sentences are correct.
- Data that occupies the communication resource only when it is ATM network = necessary and is the burst can be efficiently transmitted.



It is necessary to decide a physical multiplex position beforehand between sending and receiving as well as the STM network to identify the address in the ATM network according to cell header information.

These sentences are wrong.
- In the ATM, data is exchanged by the unit of all of the 53 bytes in length that are called a cell. The data part is 48 bytes among cells, and five bytes become header information. In this header, there are "Virtual passing identifier" that shows the address and "Virtual channel identifier", and the ATM network is a mechanism that data is delivered based on this information. Therefore, a physical multiplex position need not be decided between sending and receiving. ..-.. well, [itte] [toko] is mistaken need not ..→.. should the decision physical multiplex position.



Well, how do it say that it will require or about the current time in the time of which I took an examination as for the topic of the ATM though the rate of setting questions was high?But..transmission..world..provide..ATM..limit..by all means..such..problem..head..provide..work..remember.Then, around here today.