JPS62278895A - Communication line setting system - Google Patents

Abstract

PURPOSE:To reduce the delay time of a transmission line by assuming the direction from the office to the transmission line side as a direction S and the opposite direction as a direction R, selecting either an R-direction communication line switch part out put or an S--direction communication line switch part output in the unit of time slot to input it to an S-direction separation part. CONSTITUTION:For the direction S of delay line, lines from the office are multiplexed by a multiplexing part 2 through an office interface part 1. The output of the communication line switch part 3 is selectively outputted in the unit of time slot from a selector part 4 by using a delay line information, separated in a separator part 5, them outputted to the transmission line side through a transmission line side interface part 6. Also, transmission lines from the transmission line side are multiplexed by a multiplexing part 10 through the transmission interface part 11, then the communication line is set by the line setting switch part 9. The output of the part 9 is selectively outputted in the unit of time slot from the selector part 4 by using a transmission line information, separated in the separator part 5, then outputted to the transmission line side through the transmission line side interface part 6.

Description

Detailed Description of the Invention V. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a line setting method in a transmission device, and particularly in a line setting device that accommodates many passing lines, The present invention relates to a line setting method in which the delay time is reduced and the line is set up efficiently.

[Conventional technology]

When making line settings using a line setting device, etc., switch memory configurations are known to be either one-sided or two-sided, but two-sided memory is now more commonly used. ing. Although this has advantages such as smaller delay times compared to passing lines in the case of a single-panel configuration,
This is because there are inconsistencies in the hardware configuration in that the switch circuit scale is twice as large as that of the two-sided structure, and the switch operating speed is also twice as high.

Up to now, as a line setting device with a two-panel configuration, for example, the paper “M20 type multi-to-one converter j (NEC Technical Report Vol. 3
5, Na12 (1982) pp.22-29) are known. This device is one of the digital synchronous terminal systems that constitute a toll digital telephone network, and is configured as a synchronous multiplex conversion device having a line editing function at the synchronous multiplexing level. In the line setting rack, the line settings for each line setting unit are set between the transmission line interface signal and the station interface signal.
This is also possible for grounded lines (passing lines).

Figure 2 shows that line settings can also be made for passing lines.
1 shows the configuration of a two-sided line setting device according to the prior art. According to this, the direction from the inside of the station to the transmission line side is the S direction, and the direction from the transmission line side to the inside of the station is the R direction.
For the S direction and the R direction, the internal interface section (KIF) 1.7 and the multiplexing section (MUX) 2 and 10 are used, respectively.
, line setting switch section (TSW) 3.9, separation section (D
MUX) 5.8 and transmission line interface m (D
I F ) 6 , 112>E is provided. As shown in the figure, after passing through the line setting switch section 9, the passing line is looped back at the multiplexing section 13 via the demultiplexing section 8, and then is further passed through the line setting switch section 3. .

[Problem to be solved by the invention 3 As mentioned above, in the past, it has been possible to set up a passing line as well, but the problem in this case is that the line setting switch has been passed through twice. That's true. The delay time is approximately twice that of a dropped line that falls from the transmission line side to the inside of the office. For example, in a line setting device whose line setting unit is 384 kb/s, line setting switch 1
Since the time delay corresponding to approximately 3/16 frames is caused in the drop line, the delay time for the dropped line is 26 frames, while that for the passing line is approximately 6/+6 frames, resulting in a large delay time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a line setting method in which a passing line can be set up with a reduced delay time.

[Means for solving problems]

The above object is achieved by selecting either the R-direction line setting switch section output or the S-direction line setting switch section output for each time slot and inputting the selected output to the S-direction separation section.

[Effect]

A selector is provided between the S-direction line setting switch section and the S-direction separation section, and by controlling the selector with a passing line designation signal, it is possible to select either the S-direction line setting switch section output or the R-direction line setting switch section output. The selector causes the S-direction separation section to selectively output the information in units of time slots. Therefore, since the passing line is not passed through the S-direction line setting switch section but only through the S-direction line setting switch section, the delay time can be reduced to approximately half.

〔Example〕

The present invention will now be described. FIG. 1 shows the configuration of a two-panel line setting device according to the present invention. As shown in the figure, the difference from the one shown in FIG. The point is that each signal is outputted to the separation section 5 via the selector section 4.

Now, here, if the line from the transmission line side connects to the inside of the station, that line is defined as a lost line'''rT, and if the line from the transmission line side connects to the transmission line side again, that line is newly defined as a transit line. Then, the operation will be explained as follows.

That is, in the S direction of the dropped line, the line from inside the station is multiplexed by the multiplexing unit 2 via the in-office interface unit 1, and then connected to the line setting switch unit 3.

The output of the line setting switch section 3 is selectively output by the selector section 4 in time slot units based on the dropped line information, separated by the separation section 5, and then output to the transmission line side via the transmission line side interface section 6. By the way, this is what happened. The R° direction is also processed in substantially the same way as the S direction.

On the other hand, regarding the passing lines from the transmission line side, the passing lines are multiplexed by the multiplexing unit 10 via the transmission line interface unit 11, and then set up by the line setting switch unit 9.

The passing line from the line setting switch section 9 is then inputted to the selector section 4 via the passing line path, but from the selector section 4 it is selectively output in time slot units based on the passing line information and is then selectively output to the separating section 5. After being separated, the signals are output to the transmission line side through the transmission line interface unit 6. The line opposite the passing line, that is, the relationship between sending and receiving, operates in the same manner as described above.

〔Effect of the invention〕

As explained above, the present invention has the effect that the delay time of a passing line can be reduced to approximately half of that of the conventional system when setting up a line using a two-sided switch.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a two-sided line setting device according to the present invention, and FIG. 2 is a diagram showing the configuration of the conventional device. 1... (S direction) Intra-office interface section 2... (S direction)
Direction) Multiplexing section 3... (S direction) Line setting switch section 4... Selector section 5... (S direction) Separating section 6... (S direction) Transmission line interface section 7... (
(R direction) In-office interface section 8... (R direction) Separation section 9... (R direction) Line setting switch section 10... (R direction)
Direction) Multiplexing section 11... (R direction) Transmission line interface section. f'7-1 ].

Claims (1)

[Claims] This is a line setting method in a line setting device using a line setting switch with one or two sides, in which line setting information or By controlling based on the dropped line setting information, the selector section selectively outputs either the dropped line from the S direction line setting switch section or the passing line from the R direction line setting switch section in units of time slots. A line setting method characterized by inputting information to an S direction separation section.