JPS6077562A - Pseudo line concentrator - Google Patents

Abstract

PURPOSE:To attain common use with one kind of a system file by adding a pseudo line concentrator to a TS exchange and providing a response function and a dummy data transmission function to write/read instructions. CONSTITUTION:The pseudo line concentrator 1 is constituted with bus interfaces I , II and a pseudo response circuit 12. The interface II performs relay of an SCN data and also transmits and receives information with other system and also when a fault of a bus occurs by constituting a system confounding section 110 having a confounding function with the other system with selectors 111-113. Then the circuit 12 identifies an instruction fed via the interfaces I , II by using an instruction identification section 120, and returns the instruction from a dummy data transmission section 122 to the bus as the result of SCN when the instruction is a read instruction I , sets an internal status display FF and uses a data to the return data to a read instruction II when the instruction is the read instruction II, and identifies only initial set information when the instruction is a wire instruction I so as to clear the internal FF.

Description

Detailed Description of the Invention [Field of Application of the Invention] The present invention tiLs, TL8. This invention relates to a pseudo line concentrator that simulates the line concentrator function added in the case of a TS station.

[Background of the invention]

In conventional digital switching equipment, LS switching equipment (
The system configuration is such that the system file used in the TL8 switch (subscriber switch) and T8 switch (transit switch) is different from the system file used in the TS switch.

In this way, conventional digital exchanges have different system configurations between LS/i'Ls exchanges and TS exchanges,
The main differences are between PCM multiplex converter (PCMP) and switch device (SWF), and between switch device (SWF)
) and a trunk signal equipment (TSE) and a highway accommodating method.

First, Figure 1 (a), (b) and Figure 2 (a), (b)
) will be used to explain examples of differences in hardware and software between an LS/TLS switch and a 1'S switch. Figure 1(a).

(b) is the case of an LS/TLS switch;
(bl is TSE-8WF-PCM for TS switch
A connection diagram showing a connection method between F and a read command and an output data format are shown, both of which show an example in which a 3840 line is accommodated.

In the case of the L8/TL8 switch shown in Figure 1, the switch shown in Figure 1 (aJ
There are 128 2 MbitAec highways between PCMF and SWF, and each highway HWO-HW
127 accommodates 30 tgI lines (CH) each. The leading time slot (TSO) of each highway is used as a signal time slot to indicate the line status, and such time slot T8 (total 128) is used for the total of 2 MbitAec between s w p and TSB. The signals are transferred to the four signal lines highways 5HWO to 5HW3, and signal processing is performed by the TSE. This TSB has a software interface, and the software specifies the information SHW specifying the signal line highway 5HWO to 3 and the time slot T8fr in the signal line highway as shown in the read command format of FIG. 1(b). By receiving a read command consisting of information f9Ts, the predetermined number of #! cHO-CH2! This is to convey the status of J to the software.

In the case of the TS switch in Figure 2, there are 32 highways of 8 M bj Vsec between PCMP and 8WF as shown in Figure 2 (al), and each highway HW 0-) IW31
Each station accommodates 120 channels (CH). The first four time slots (TSO to TS3) of each highway are used as signal time slots to display the line status.
) is 1 of 8 Mbit/+ec between SWF and TSB
It is transferred to the main signal line Highway SHW and signal processing is performed by TSE. This TSE has software ink 7 ace, and from the software Fig. 2(b)
The signal line highway SHW handling group HG (IHG=6C
By receiving a read signal consisting of information MHG specifying time slot groups T80 to TS4 and information TSG specifying time slot groups T80 to TS4, predetermined handling is performed as shown in the output data format of FIG. 2(b). The status within group HG (IHG = 6 CH) is communicated to the software.

Such L8/TLS switch in Figure 1 and TS in Figure 2
Let's look at the differences between exchanges in terms of hardware.

PCMP highway interface part in Figures 1 (a) and 2 (a), SWF to PCMF to highway interface part, 8WF to THE highway interface part, TSH highway interface part to TSB software interface The hardware is different in a total of five parts. As shown in Figure 1 (b) and Figure 2 (b), the software interface on the other hand has a different method of specifying line information for read commands and a different format of output data, and correspondingly different system files. is available.

Therefore, in a system in which an L8/TLS switch is to be switched to a T8 switch depending on the circumference, it is necessary to replace a considerable amount of hardware and to change connections accordingly due to the above-mentioned differences. On the one hand, it required a huge amount of work, and on the other hand, it also had drawbacks, such as the system files had to be replaced.
It is conceivable to prepare one for the station and operate it as a TLS station, but it is not economically advisable.

[Object of the Invention] The present invention eliminates the drawbacks of the prior art described above, and configures a pseudo line concentrator that simulates a line concentrator using simple hardware.
By installing this only when using it as a T8 station, L
8. TL8. An object of the present invention is to provide an economical pseudo concentrator that can realize a switch that can be used in common with one type of system file regardless of the station hierarchy of T8.

[Summary of the invention]

The present invention provides that when a TS exchange does not accommodate subscribers and an attempt is made to use a system file for a TLS exchange on this T8 exchange, access (write, read command) from software to the line concentrator occurs. If there is no response from Hard 9 Air, it will be assumed that there is a problem.

However, this software has a response function to write commands, a response function to read commands, and a function to return dummy data (line idle, no subscriber calling).
- Focusing on the fact that the above-mentioned inconvenience can be solved by adding software, this is an economical pseudo line concentrator that allows TS stations to use system files for TL8 stations by simply implementing such a simple function. .

[Embodiments of the invention]

An embodiment of the present invention will be described below.

First, the software interface function of the line concentrator and the functions that this pseudo line concentrator should have will be explained in detail.

The table below summarizes the software interface functions that the line concentrator has.

First, the reading command is a command to periodically read status changes on the subscriber side and the switch side. All you have to do is send it back.

Second, the write command was used to read subscriber state changes such as outgoing and incoming calls as a result of the initial setting command, which resets the temporary memory in the hardware when the system is started up or when the PH2 is restarted, and the read command I. There are two types of commands to be written to the software in order to later perform switch settings, etc. Therefore, the latter command will not be sent from the software 9air if the subscriber's status is constantly vacant.

Thirdly, for the write command ■ and the read command ■, during system switching or pseudo-normal testing, the software issues a write command ■ once to the hardware, changes the state of the hardware, and confirms this. Therefore, it issues the read command ■ and performs SCN on the result of the state of the hardware.From what has been described above about the software interface function of the line concentrator, the functions that this pseudo line concentrator should have are as follows. It is.

The first is the response function for each command, which responds to each command shown in the table to confirm reception.The software receives this response signal to respond to the corresponding command.
It is assumed that the software has received the command normally.

Second, with the dummy data return function l, it is sufficient to always return the status of subscriber vacancy to the reader command, and such dummy data can be fixedly provided in the software to be sent back to the reader command. 8ON result.

Third, the dummy data return function (■) identifies this command for system switching among the write commands (■), inverts the internal system display rip-flop, and switches the system for the following read command (■). Tell them that it has been replaced. In addition, if a fault occurs in the check circuit in the concentrator and the detection result of the check circuit is abnormal, this information can be identified and used for pseudo-normal tests to confirm the normality of the check circuit. As is clear from the above explanation, in this pseudo line concentrator , it is only necessary to have the above three functions, and normal exchange operation can be guaranteed even online.

FIG. 3 is a connection diagram showing one embodiment of the pseudo line concentrator according to the present invention, illustrating a connection method with FIG. 2(a), and FIG. 4 is an embodiment of the pseudo line concentrator according to the present invention. FIG. 2 is a configuration block diagram showing the configuration. In Figure 3, this pseudo concentrator l
is connected through a bus to the central processing unit 2, which in turn connects to the SWF and the TSE. In Figure 4,
The bus between the central processing unit 2 and the pseudo concentrator 1 and the pseudo concentrator 1 are divided into 0 and 1 systems to increase reliability.
They are duplicated, and each has the same configuration and function.

This pseudo concentrator l has a bus interface I (10), a bus interface ■ αυ and s pseudo response circuit sphere 3
The bus interface lO, If (11), which consists of two parts, has the same functionality as that found in conventional digital exchanges. The bus interface l includes a response signal sending unit 101 having a function of sending a response signal in response to command reception, and a central processing unit ff.
2, a data receiving section 103 having a function of sending data to the pseudo response circuit 12, and a data sending section 104 having a function of sending data from the pseudo response circuit 12. These data are transmitted and received between the data receiving section 103, the data transmitting section 104, and the pseudo response circuit 12, respectively, via the bus interface (2). The bus interface (2) not only relays these SCN data, but also connects the system confounding section 110, which has a confounding function with other systems, to the selector 111. 112. It consists of 113,
It sends and receives information to and from other systems when a bus failure occurs.

The pseudo-response circuit U identifies the command sent via the path interfaces A and FF with a command identification unit 120 consisting of a decoder 121, and if it is a reading command, it outputs dummy data indicating the subscriber vacancy status as a dummy SCN result. The data is returned from the data sending unit 122 to the bus side, and if it is a write command (2), it sets the internal status display flip 70 knob (not shown) and becomes the return data for the read command (H), and if it is a write command (I), it is the initial setting information. Clear the internal frig 70 knobs by identifying only the

As described above, according to this embodiment, in order to make the system files used in the TL8 switch in a digital switch etc. usable also in the TS switch, collection 11! is added to the T8 switch! As a pseudo line concentrator with simulated functions, add a response function to write commands, a response function to read commands, and a dummy data sending function to the software interface of the line concentrator so as not to affect the online software. Additionally, the device can be easily and economically configured with a minimum amount of hardware without providing other concentrator functions such as subscriber circuits and concentrator switches.

〔Effect of the invention〕

As explained above, according to the pseudo concentrator of the present invention,
By adding this device with a simple hardware configuration, an economical and unified exchange system can be realized. In particular, if this device is used as an emergency switch that is dispatched in the event of a natural disaster, there is no need to prepare 2AI types for an LS/TL8 switch and a TS switch, and the equipment required for a TS switch when replacing a T8 station can be saved. If only the doware and this pseudo concentrator are transported, excellent results can be achieved.

[Brief explanation of the drawing]

Figure 1+8), (b) is a partial connection diagram and signal format illustrating a conventional L8/TL8 switch, Figure 2 (
a). (b) is a partial connection diagram and signal format illustrating a conventional T8 switch; Figure 3 is a connection diagram illustrating an embodiment of a pseudo concentrator according to the present invention; and Figure 4 is an embodiment of a pseudo concentrator according to the present invention. FIG. 2 is a configuration block diagram showing the configuration. 1... Pseudo concentrator, 2... Central processing unit, 10.
... Bus interface I, 11... Bus interface ■, Lu... Pseudo response circuit, 101... Data sending section, 102... Timing monitoring section, 103... Data receiving section, 104... Response signal sending unit, 110-・
・System entanglement part, 111.112.113...Selector,
120 -- Instruction identification unit, 121 -- Decoder, 12
2...Dummy data sending unit, PCMP...PCM multiplex conversion device, SWF...switch device, 'i'8B.
... Trunk line signaling device. Agent Patent Attorney Tadashi Akimoto Minoru No. 1B (a) Warihimi Uri Ikon Output Footer Figure 2 (a) IHG = 6C1→

Claims (1)

[Claims] In an exchange whose system configuration is such that the system file used for the TLi9 exchange that combines LS exchange and TS exchange is different from the system file used for T8 exchange, the system file used for TL'8 exchange is system files that can be used on TS exchanges (a pseudo line concentrator that simulates the line concentrator function is added to the T8 exchange, and the software interface of the line concentrator is added to the pseudo line concentrator so as not to affect online software). By providing a response function to a write command, a response function to a #? take command, and a dummy data sending function, it is possible to minimize the need for subscriber circuits and other line concentrator functions such as a line concentrator switch).・-Pseudo line concentrator configured with hardware.