Control scheme in digital switchboard for telephone

Today's chief telecommunications engineer's material is "Switchboard. "Isn't the part of 【 exchange 】 as still important as that of taking side of "Transmission exchange" with the chief transmission and switching engineer?It thinks. "To begin with, what is the switchboard?" do not roughly understand even by the person even as for the person not involved in the switchboard though the problem of hitting the category of "Control scheme" in the problem of the exchange today if sentences are calmly read in case of the problem today?Then, today's material seen once is [kochira] ↓↓.



- Control scheme in digital switchboard for telephone



The control scheme to which all the exchange processing is done with one processor is called a centralized control method, and the control scheme to which the exchange processing is done with two or more processors according to each function or the load is called a distributed control method.

These sentences are correct.
- Centralized control method = Control scheme to which all exchange processing is done with one processor
- Control scheme to which exchange processing is done with two or more processors according to each function or distributed control method = load



In the centralized control method, the system processing performance depends on the ability of the processor. Moreover, two or more processors make troubleshooting/restart process complex from the method to distribute processing according to a different function.

These sentences are wrong.
- Certainly, troubleshooting/restart process will become simple because it is good when only a single processor is seen though might depend on the ability of the processor for the processing performance in the centralized control method.



A function distributed control method to allot the identical function with two or more processors can do large-scale processing by comparatively using two or more processors with small processing performance.

These sentences are wrong.
- "The identical function is allotted with two or more processors" might not be a function distributed control method and be a load-balancing control method.



How?Is Japanese calmly read even if it doesn't know "The technology" somehow and can it not answer correctly if it solves it?However, it is necessary to catch calmly often reading the problem because the expression of the problem is nasty. Then, let's see the problem of the switch system of another one today. This material is [kochira] ↓↓.



The time switch is each time slot and a switch that does the exchange connection between highways while arrange the timesharing gate between the insertion highway and ..putting out.. highway, high-speed this timesharing gate, and multiplexed by opening and shutting.

These sentences are wrong.
- ｢It is a switch that replaces information by using the gate element that operates at high speed between high ways, and it is called the high way switch. The space switch is composed of the control memory that controls the opening and shutting of the gate of a lattice gate circuit and each time slot. ｣

- "Space switch" answers "Time switch" of sentences of the problem correctly.



If the multiplicity of the highway that goes in and out is assumed to be n, the time switch functions as a lattice of a complete group where internal congestion doesn't exist, and can be shown with the space division type switch of n×n.

These sentences are correct.
- I will memorize these sentences round ･･･.



The space switch is a replaced switch in an arbitrary time slot on the highway. put out the slot of time on the insertion highway

These sentences are wrong.
- Because it is "Time slot" to replace the time slot, the time switch though it neatly examines and it doesn't exist.



The control memory of the space switch of each insertion highway has been installed.

These sentences are wrong.
- The space switch is a switch that replaces information by using the gate element that operates at high speed between high ways, and it is called the high way switch. The space switch is composed of the control memory that controls the opening and shutting of the gate of a lattice gate circuit and each time slot.
- I think that it is a mistake of "Gate circuit and each time slot .."Each insertion highway" of the problem sentence.." ..holding perhaps...



Well. Then, it was a problem of "Time switch" and "Space switch" though it was this problem. I think that you should see the reference book of an installation technician who is older to count on chief telecommunications engineer's reference book and problem collection perhaps when the problem around here will be studied in detail and study though a big thing cannot be said because I am not considerably good at the problem of this "Time switch" and "Space switch". Installation technician's reference book is considerably kind and, anyway, sleep ･･･ Then, around here today