KR100219945B1 - Tdx-100 exchange system structure - Google Patents

Abstract

The present invention is to provide a system structure of the TDX-100 exchanger to provide a variety of system applications and services by innovatively integrating / improving the internal structure of the TDX-10 series exchange.

To this end, the present invention includes a matching exchange subsystem (ASS: 100) which integrates and operates application functions according to the information attributes of all accessible terminals; A central control subsystem (CCS: 200) for performing overall maintenance and management of the system; Network control that performs the routing function of centralized call processing while connecting the matched exchange subsystem (ASS: 100) or between the matched exchange subsystem (ASS: 100) and the central control subsystem (CCS: 200). It is composed of subsystems (INS: 300), and provides various system applications and services such as Local, Tandem, Toll, IGS, ISDN, STP, AIN, Frame Relay, Centrex, PCS, IDLC, and TMN.

Description

System structure of the TDX-100 exchange

1 is a system structure diagram of a general TDX-10 retrofit exchanger,

2 is a system structural diagram of a TDX-100 edificer according to a preferred embodiment of the present invention.

＊ Explanation of symbols for main parts of drawing

14 ring generator (RG) 22 digital subscriber registration block (DSI)

24: primary speed subscriber matching block (PSI) 26: basic access multiplexing matching block (BAMI)

42: signal terminal block (ST) 48: common signal matching block (GSI)

50: signal service matching block (LSI) 56: time switch link (TSL)

66: space switch link (SSL) 42a: group bus

44a: internal bus 100: matching exchange subsystem (ASS)

200: Central Control Subsystem (CCS) 300: Network Control Subsystem (INS)

The present invention relates to a system structure of the TDX-100 exchanger, and more particularly, to a system structure of the TDX-100 exchanger, which more easily improves the software internal structure of the TDX-10 series exchanger.

As is well known, since the development of the electronic pedometer using vacuum tubes from around 1939, based on several field experiments and the technical experience of semiconductor, in May 1965, the world's first electronic exchanger No. 1 ESS was developed and put into practice by the US ATT, and since then, with the introduction of new technology, the electronic exchange has been continuously developed.

These electronic exchangers use high-speed electronic devices such as transistors and integrated circuits to quickly and accurately connect subscriber's communication paths, facilitate maintenance work, and provide flexibility and reliability to lead a complex information society. As a system capable of providing a variety of services (reliability) and a variety of services, TDX-based electronic exchangers called so-called electronic exchangers are mainly used.

Such electronic switch is a large-capacity exchanger co-developed by a predetermined manufacturer of alternating energy, mainly from the Korea Telecommunication Research Institute, to cope with the characteristics of various communication networks, and can be economically constructed from the small scale of farming and fishing villages to the large scale of large cities. It is easy to add new functions based on modular structure, decentralization of control function using 32-bit commercial microprocessor, and message communication by high speed interprocessor communication (IPC), and optical fiber High speed communication between service systems by link is made.

In the case of the conventional all-electronic exchange, for example, TDX-10 exchange, problems such as breakage during system operation frequently occur, and application systems such as ISDN, Mobile, and IN (Intelligent Network) are developed as separate systems. Because of its weak scalability and high price per line, its internal and external competitiveness is extremely low.

Thus, in order to solve the above-mentioned problems, a TDX-10 retrofit exchanger has been proposed that has passed the system structure as shown in FIG. 1, and typically the TDX-10 retrofit exchanger has a function of distributed call processing. It is composed of ASS (Access Switching Subsystem), INS (Interconnection Network Subsystem) which performs centralized call processing routing function, and Central Control Subsystem (CCS) which manages overall system operation and maintenance. N ASS-S (general analog subscriber: ASS-SN), N ASS-T (analog and digital relay line: ASS-TN), N ASS-ISDN (ISDN digital subscriber) ASS-IN), N ASS-7 (CCITT No.7 Signal Unit: ASS-7N), N ASS-P (Packet Processing Unit: ASS-PN), ASS-GS (Joint Service Unit), ASS-GT It is composed of various connection exchange systems such as a (common service device).

Various cases of the call processing process (mainly operation in ASS-SN) of a typical analog subscriber performed in the TDX-10 improved exchange configured as described above will be described as follows. Omitted).

① The operation of calling party A to the called party B will be described.

Once subscriber A picks up the handset, the subscriber line status is detected by the Analog Subscriber Interface Processor (ASIP) -N, which informs the caller's information and the location of the subscriber line of the global bus. BUS is sent to the Access Switching Processor (ASP), and according to the instructions of the ASP, the TLSP-N controls the Local Service Interface Unit (LSIU) to send outgoing tones to the ASIU in the form of tones. The ASIU converts the digital tone to analog and sends it to the subscriber A.

② The operation of receiving the number input by the calling party A after the call origination operation will be described.

When the subscriber A receives the dial tone by the operation in step ①, the number is input using the rotary dial telephone or the 10-key provided on the pushbutton telephone, and the number is input by the rotary dial telephone. In the case of the subscriber A, the dialed pulse is detected by the ASIU and then interpreted by the ASIP-N. When the first number is received, the number information is sent to the ASP via G-BUS (the remaining number). Are also sent via the G-BUS to the ASP), after receiving the first number, the ASP causes the TLSP-N to switch the dial tone.

On the other hand, in case of number input by push button telephone, when subscriber A presses button, MFC signal is sent to LSIU through TSLU, interpreted and received by TLSP-N. When first number is received, number information is G- It is sent to the ASP via BUS (the remaining numbers are also sent to the ASP via G-BUS), and after receiving the first number, the ASP causes the TLSP-N to switch the dial tone.

③ It describes the operation of connecting the own station according to the number receiving operation.

While the calling party A dials in step ②, the ASP requests a translation of the station number from the NTP (Number Translation Processor) in the INS to determine whether the call is a native number, and if the call is a native number, after the last number is received. The ASP requests the NTP to translate the called number. The NTP requests the called party to the called ASP, and the called ASP informs the calling ASP that the called party has occupied the called subscriber. The processor requests the SSP (Space Switch Processor) -N to connect the space switch, and the originating ASP requests the TLSP-N to connect the ring back tone through the path set above. In addition, since a ring connection is requested to the called subscriber of the ASIP-N, a ringing current is sent to the called subscriber B under the control of the ASIP-N.

(4) The following describes the operation of connecting the own call completely according to the called subscriber call operation.

As the ringing current in the step 3 is sent to the called party B, when the called party B picks up the receiver, the line loop state is detected by the ASIP-N, and the ASIP-N cuts the ring to the ASP. Send (at this time, billing begins). Subsequently, the called party ASP requests the TLSP-N to ringback tone cutting and notifies the originating ASP that the called party responds. Thereafter, the called party ASP connects the TLSP-N to the voice call path, thereby establishing a complete voice call path between the calling party A and the called party B.

⑤ Explain the operation of canceling (calling outgoing call) during own call.

First, when the calling party A hooks on or receives the line loop state is detected by the ASIP-N, and the state is reported to the ASP (at this time, charging is terminated). Subsequently, the calling ASP requests the TLSP-N to disconnect the voice call, and the SSP-N in the INS requests the space switch to be disconnected, while the called ASP requests the TLSP-N to disconnect the voice call. busy tone) Subsequently, when the called party B becomes warm, the called party ASP requests a tone cutting from the TLSP-N and the call is terminated.

In addition, the outgoing call processing process (operation in ASS-7N) using the No.7 signal in the TDX-10 improved exchange will be described. If the call is the outgoing call using the No.7 signal, the ASP Relay call information is sent to SMHP (TUP message), and SMHP performs rate adaptation function and No.7 level 2 function through STG, and then sends this No.7 signal to succeding exchange. send. Then, the No. 7 reverse signal sent from the other exchange is received by the STG, and this No. 7 reverse signal is detected by the SMHP, and the information is sent to the ASP where the calling party A is located.

On the other hand, when the incoming call processing process (operation in ASS-7N) using No. 7 signal in the TDX-10 retrofit exchange is described, a call will be received using No. 7 signal route. At that time, the No. 7 signal from the preceding exchange is received by the STG, and the received No. 7 forward signal is detected by the SMHP, and the information is sent to the ASP. The ASP then sends a No. 7 reverse signal to the front end exchange via the SMHP.

As described above, the TDX-10 improved exchanger can perform incoming call processing using an LD (Loop Decadic) signal, incoming call processing using an R2 signal, as well as the above-described processing.

However, the TDX-10 retrofit exchanger with the system structure as described above performs various functions with separate ASSs for each connection exchange function, so it is disadvantageous in price competitiveness when configuring small capacity, and only some functions use the No.7 signaling method. There is a problem that the whole connection exchange system must exist.

In addition, the above-mentioned TDX-10 type exchanger has a large number of peripheral processors, which makes the connection of IPC and peripheral devices complicated, and it is economically designed using a small capacity switch, but there is a disadvantage of low reliability, and in communication between peripheral processors and devices, Dose limitations have occurred.

In addition, the above-described TDX-10 retrofit type exchanger is a separate system for each analog, digital, packet, No. 7, trunk, and ISDN, and thus, lacks flexibility in providing various services, and has the same structure when configuring a large capacity or a small capacity. As a result, the cost per line increases when a small system is installed, and the scalability by system size is insufficient.

Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to provide a system structure of a TDX-100 exchanger that can provide various system applications and services by integrating and improving the internal structure of the TDX-10 series exchanger. In providing.

According to a preferred embodiment of the present invention to achieve the above object, a matching exchange subsystem (ASS) for integrating and operating the application function according to the information attributes of all accessible terminals; A central control subsystem (CCS) that performs the overall maintenance and management of the system; A system of a TDX-100 switch comprising a network control subsystem (INS) for performing routing functions of centralized call processing while connecting the interchanging subsystems or between the interchanging subsystems and the central control subsystem. A structure is provided.

Preferably, each subsystem is equipped with a single peripheral processor and a main processor.

The peripheral processor and each device communicate using the PCM bus.

On the other hand, the data link between the matching exchange subsystem and the connection network control subsystem is cross redundant, and the time slot between the data links is 2K.

In addition, in case of No. 7, a group bus is used to perform communication between STG (Signaling Terminal Group).

In the case of a packet, an internal bus is used to perform communication between packet modules.

The network control subsystem is also equipped with a space switch link incorporating a space switch and a central data link into one.

Here, the capacity of the space switch is 96 × 96.

On the other hand, the capacity of the time switch of the time switch link provided in the matching exchange subsystem is 10K x 4K, and the aggregation ratio of the time switch is 2: 1.

In addition, the front end of the time switch link is provided with a digital line concentrating means for reducing the heavy load of the time switch, the digital line converging means performs a multiplexing / demultiplexing function of the PCM data, the digital line concentrating means The ratio of elections is 2: 1 to 4: 1.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

2 is a system structure of a TDX-100 switch according to a preferred embodiment of the present invention. The embodiment of the present invention includes a matching exchange subsystem (ASS: 100), a central control subsystem (CCS: 200), and a network control subsystem. (INS: 300).

In the figure, the matching exchange subsystem (ASS: 100) accommodates functions such as subscriber (including ISDN), trunk line, No. 7 / packet in an integrated form, and performs various exchange functions as needed. It can be increased in units of ASS and thus has a horizontally distributed structure. The matching exchange subsystem (ASS: 100) includes TEC / ITEC (10), ASI (12), RG (14), and RI ( 16), DCI (18), PCI (20), DSI (22), PSI (24), BAMI (26), FI (28), SRI (30), TTC (32), ASP (34), CI ( 36), ASS-PP (38), Switch I / F (40), PHM (44), FRH (46), GSI (48), LSI (50), BET (52), DLC (54), and TSL 56, and the like.

Here, the TEC (ITE) / ITEC (10) is an in-test (In-test) and the AC / DC voltage for the subscriber to indicate whether the transmission loss, dial tone, ring tone, digit transmission, etc. for the subscriber line normal, This is a control module to perform out-test for measuring test of resistance and capacitance.

The analog subscriber interface (ASI) 12 is an analog subscriber matching block, which belongs to a line and trunk access subsystem (LTAS) that mainly performs monitoring, control, and test functions of subscriber and trunk line interfaces, and has a matching function between the analog subscriber and the exchange. Do this.

The RG (Ring Generator 14) is a 20Hz call signal current (-48V superimposed DC current) required for the subscriber circuit and a zero-crossing signal for contact protection of a ring relay of the subscriber circuit. This is supplied to the TEC / ITEC 10 and the ASI 12, and is configured in a redundant (active / stand-by) form.

The RI (RASM Interface: 16) is matched with the RASM 400, which is a remote access switching module, by E1 or Optic for RASM call processing, and performs a signal processing function accordingly.

The DCI (Digital Cept trunk Interface: 18) is a block that performs a European type (2048 Mbps) digital relay line matching function, and directly controls a CEPT type digital relay line to perform transmission and reception of a signal or to monitor the operation state of the relay line. .

The PCI (PCS Interface: 20) performs E1 matching and No. 7 signal processing functions with a base station controller (BSC) to perform PCS related call processing.

The DSI (Digital Subscriber Interface) 22 is a digital subscriber matching block, which is responsible for digital subscriber monitoring, control, maintenance, communication with a PP (peripheral processor), and connection with a DLC 54 described later. For example, the DSI 22 separates the 2B + D signal and data information received from the subscriber into B and D channels and transmits the B channel to the DLC 54 which will be described later.

The primary rate subscriber interface (PSI) 24 is a primary speed subscriber matching block, which not only performs a matching function with a primary group access ISDN subscriber 30B + D such as a digital PABX, but also receives 30B + D information received from the primary interface. It separates the D channel from and separates the separated D channel information into S / P (Signalling / Packet Data) again and performs the matching function with the PP.

The Basic Access Multiplexer Interface (BAMI) 26 is a basic access multiplexing matching block, and performs matching of an n (2B + D) type primary group multiplexing device to an exchange, which accepts a local or remote digital subscriber as a basic access. do.

The FI (Fiber Loop Carrier Interface: 28) is matched with FLC-COT and E1 to accommodate various optical subscriber connection devices of DS0, DS1, DS1E, and DS3E levels, and multiplexed from FLC-COT to STM-1 level digital level. It then performs the function of optical transmission to the remote device of the optical subscriber transmission device.

The SRI (SRASM Interface: 30) is a signal for providing a Public Switched Telephone Network (PSTNP), an Integrated Service Digital Network (ISDN), and a Telecommunication Management Network (TMN) service by matching the SRASM 500 or the mother country with E1 or Optic. It performs the processing function. For example, when it matches with optics, it also provides the dedicated line connection function of DS0, DS1, DS3 level.

The TTC (Test Trunk Circuit: 32) performs an in-test and an out-test on the relay line.

The ASP (Access Switching Processor) 34 performs not only the overall call processing function, operation and maintenance function, ISDN access layer 3 function in the ASS 100, but also user part of No.7 signaling, TCAP and It also performs the ASE function, and performs the control function of the peripheral device (Peripheral Device) in the ASS (100). In particular, the ASP 34 also has a station number translation function.

The CI (Control Interworking: 36) performs a function of exchanging an IPC (Inter Processor Communication) message for each processor in charge of a control function to communicate with another processor.

The Access Switching Subsystem Peripheral Processor (ASS-PP) 38 performs low-level work requiring real-time processing of signals such as sensing and instantaneous analysis from device devices in the ASS 100.

The switch I / F 40 provides a control communication channel between the PP (peripheral processor) and the control device.

The ST (Signaling Terminal: 42) is a signal terminal block for the No.7 signal system, and processes the level 2 functions (alignment of signal data, error detection, flow control, etc.) of the signal message received from the signal link. In the related art, the ST 42 communicated with each other via a TSL 56 and a trunk, which will be described later. However, in the embodiment of the present invention, the ST 42 communicates with each other by a group bus 42a.

The Packet Handling Module (PHM) 44 performs not only layer 2 and layer 3 functions such as ITU-T X.25, X.75, and ISDN internal protocol, but also a PAD (Packet Assembler / Disassembler) function. In the exemplary embodiment of the present invention, the packet modules communicate with each other through an internal bus 44a.

The FRH (Frame Relay Handling module) 46 performs high-speed transmission (for example, a speed of 2M bps) and exchange function by a frame relay defined in LAP-F of Q.922 in communication between subscribers. 46 performs communication between the modules through the internal bus 44a.

The GSI (Global Service Interface) 48 is a common signal matching block, and performs a fixed and editable subscriber recording guide service, and also performs a conference call service function.

The LSI (Local Service Interface) 50 is a signal service matching block that provides a signal service function used for call connection and progress, and transmits or receives R2MFC and DTMF signals, continuity test tones, and audible tones. .

The BET (Bit Error Test: 52) checks whether there is a problem in the speech path of the operating system during set-up of the exchange or in the operating system (for example, noise in the communication path, half-way and two-way communication). In addition, it performs a diagnostic function of a call to maintain a good call quality according to the expansion of non-voice services such as ISDN.

The DLC 54 performs not only the multiplexing and demultiplexing functions of the PCM data, but also performs a primary condensing function of the PCM data (for example, a condensing ratio of 2: 1 to 4: 1).

The TSL (Time Switch Link: 56) is a T-switch (e.g., a capacity of 10K x 4K) in a T (Time) -S (Space) -T (Time) switch structure, and is an interchange of time slots. The Interchanger function and the data link function to the S switch are also performed.

Here, the DLC 54 is installed at the front end of the TSL 56, because the TDX-100 switch according to the present invention can accommodate almost twice as many subscriber lines as the conventional TDX-10 switch. In order to reduce the burden of the time switch constituting the TSL 56 (that is, the DLC 54 serves as a T-switch), the TSL 56 has a secondary aggregation function ( For example, by performing an aggregation ratio of 2: 1, the DLC 54 and the TSL 56 can perform a maximum aggregation function of 8: 1.

On the other hand, the central control subsystem (CCS: 200) is a subsystem that performs the overall operation and maintenance of the system, the central control subsystem (CCS: 200) includes a CI (36), CCP (58), EXIP 60, auxiliary memory devices 62, 64, and the like.

Here, the central control processor (CCP) 58 is a processor for man machine communication (MMC), which performs a message input / output function between an operator or a support center and a system, manages the history of a system operation, and operates a local disk. It also controls the control. In other words, the CCP 58 is a processor that performs system level operation and maintenance functions, and performs network management, system maintenance, test management, access to the charging center or centralized operation center, and also provides statistics and assistance. Storage device (e.g., disk (optical disk, hard disk: 62), MT 64) control function, maintenance boss function in CCS 200, all faults occurring in CCS 200 It displays the alarm status of the system.

The EXIP (Eithernet and X.25 Interface Processor: 60) performs a matching function of LAN, X.25, TMN, CAMA, and the like.

On the other hand, the network control subsystem (INS: 300) is located in the center of the TDX-100 switch system to perform the function of connecting between the ASS (100) or between the ASS (100) and the CCS (200) The network control subsystem (INS: 300) includes SSL 66, INP 68, INS-PP 70, and the like.

Here, the SSL (Space Switch Link: 66) is an S-switch connection control by integrating an S-switch (Space Switch: for example, 96 × 96 capacity) and a central data link (CDL) in a TTSTT switch structure. (100) or a data link function with the CCS 200, the SSL 66 and the data link between the TSL 56 in the ASS (100) are interconnected in a cross-redundant form, the data The speed improvement (155 Mbps) was achieved by setting the time slot between links to 2K.

In addition, the SSL 66 is interconnected with the CIs 36 of the CCS 200 units through the CIPCU (Central Node Network: 72) and data links with the CCPs 58 in the CCS 200.

The INP (Interconnection Network Processor) 68 performs not only search, connection, and disconnection control functions through the call of the TST switch, but also maintenance and network management functions such as call trac and path setup. Perform root control function. In particular, the INP 68 is responsible for the called party translation function and the routing function (that is, the function of connecting the time switch and the space switch to the called party side according to the called party translation).

The INS-PP 70 performs low-level work requiring real-time processing of signals, such as sensing and instantaneous analyzes, from device devices in the INS 300.

In addition, the network control subsystem (INS: 300) includes NES (Network Synchornization) for performing control and operation functions of the network synchronizer device.

Particularly, in the conventional TDX-10 weighing device, the TD-bus is used for communication between the peripheral processor and the device, but in the embodiment of the present invention, the PCM bus is used to improve the capacity and speed.

Here, the PCM bus is capable of bidirectional communication, cabling is simpler than TD-bus, and the bandwidth is more flexible than TD-bus by using 32 time slots. It allows you to control more devices.

On the other hand, for example, when a plurality of the ASS (100) having the above-described structure (that is, integrated structure) is installed, services can be distributed to each main processor, so that continuous service can be maintained even when one main processor is down. Will be.

Next, the call processing operation by the system structure of the TDX-100 switch according to the embodiment of the present invention configured as described above is as follows.

First, an intra call processing operation will be described.

Once the calling subscriber picks up the handset, the subscriber line status is detected by the ASS-PP 38 via the Switch I / F 40, and the ASS-PP 38 checks the information of the call origination and the subscriber line. The position is transmitted to the ASP 34, which requests the LSI 50 to allocate the DTMER channel after requesting a tone connection.

Accordingly, the LSI 50 converts the dial tone into a tone, and sends the dial tone to the ASI 12 through the TSL 56 and the DLC 54. The ASI 12 converts the dial tone in a digital form. Is sent to the subscriber.

Subsequently, the calling subscriber enters a digit for a desired telephone number. While the digit is input, the ASP 34 performs a station number translation to determine whether or not the current call is a native number. When the last number is received, the ASP 34 requests the INP 68 to translate the called party number. The control path for the called party translation request is ASP 34-CI (36). )-TSL (56) -SSL (66) -CIPCU (72) -INP (68), so the INP (68) requests the called party to the called party's ASP, and the called party's ASP (34) makes the calling party. The ASP 34 is informed that it has occupied the subscriber, and accordingly, the INP 68 instructs the TSL 56 to connect the T-switch according to the translation result.

As the T-switch is connected, voice data from the calling party is delivered to the called party via the ASI 12-DLC 54- TSL 56-DLC 54.

On the other hand, if necessary, the ASP 34 controls the ASS-PP 38 to transmit the announcement and the tone to the GSI 48 via the TSL 56 through the Switch I / F 40. You can ask.

As another example, an inter call processing operation will be described.

First, when the calling subscriber picks up the receiver, the subscriber line status is detected by the ASS-PP 38 via the Switch I / F 40, and the ASS-PP 38 detects the call origination information and the subscriber line. The location is passed to the ASP 34, which requests the LSI 50 to allocate the DTMFR channel after requesting a tone connection.

Accordingly, the LSI 50 converts the dial tone into a tone, and sends the dial tone to the ASI 12 through the TSL 56 and the DLC 54. The ASI 12 converts the dial tone in a digital form. Is sent to the subscriber.

Subsequently, the calling subscriber enters a digit for a desired telephone number. While the digit is input, the ASP 34 performs a station number translation to determine whether or not the current call is a native number. If the call is an individual call, when the last number is received, the ASP 34 requests the INP 68 to call the called party number. The control path for the called party number translation request is the same as that of the above-mentioned local call processing. In this case, it becomes ASP (34) -CI (36) -TSL (56) -SSL (66) -CIPCU (72) -INP (68). Therefore, the INP (68) requests a called party to the destination ASP. The called party ASP notifies the calling party ASP that it has occupied the called subscriber and requests the switch connection to the INP 68. Accordingly, the switch connection to the INP 68 is required. Accordingly, the INP 68 instructs the SSL 66 to connect the S-switch (space switch) and at the same time instructs the TSL 56 to connect the T-switch (time switch).

As the T-switch and the S-switch are connected, the voice data from the calling subscriber is transferred to the ASI 12-DLC 54-TSL 56-SSL 66-TSL 56-DLC 54. It is delivered to the called party via.

As another example, the relay call processing operation will be described.

Once the calling subscriber picks up the handset, the subscriber line status is monitored by the ASS-PP 38 via the Switch I / F 40, and the ASS-PP 38 checks the information of the call origination and the subscriber line. The location is passed to the ASP 34, which requests the LSI 50 to allocate the DTMFR channel after requesting a tone connection.

Accordingly, the LSI 50 converts the dial tone into a tone, and sends the dial tone to the ASI 12 through the TSL 56 and the DLC 54. The ASI 12 converts the dial tone in a digital form. Is sent to the subscriber.

Subsequently, the calling subscriber enters a digit for the desired telephone number. While the digit is input, the local station's ASP 34 performs the station number translation. Occupancy signal and number information is sent to.

Accordingly, the ASP 34 of the other station requests the INP 68 of the other country to translate the called party number. The control path from the relay call to the called party number translation request is the ASP 34 -host of the host country. CI (36)-TSL (56) of own country-SSL (66) of own country-CIPCU (72) of own country-INP (68) of own country-ASP (34) of own country-DCI (18) of own country-other country DCI (18)-ASS-PP (38) of another country-ASP (34) of another country-CI (36) of another country-TSL (56) of another country-SSL (66) of another country-CIPCU (72) of another country .

Thereafter, the other station ASP 34 requests the switch connection to the INP 68 according to the translation result of the called party number at the INP 68, so that the INP 68 switches the S-switch and the T-switch. Instruct the connection.

As the S-switch and T-switch are connected, the voice data from the calling party is transferred from the ASI 12-DLC 54-TSL 56-SSL 66-TSL 56 56-DCI 18. -Called DCI (18)-called TSL (56)-called SSL (66)-called TSL (56)-called DLC (54)-sent to called party via called ASI (12) .

Meanwhile, as another example, in the description of the ISDN call processing operation, when the DSI 22, the PSI 24, and the BAMI 26 are used, the above-described local call processing operation, individual call processing operation, or relay call processing In operation, the ASI 12 is replaced with the DSI 22, the PSI 24, and the BAMI 26, respectively.

In the case of the ISDN call processing, the packet call processing only differs in the flow of packet data following the same control path as in the individual call processing operation described above. That is, the packet data from the calling subscriber is transmitted to the PSI 24-TSL 56-PHM 44-TSL 56-SSL 66-TSL 56-PHM 44-TSL 56. It is delivered to the called party via the PSI 24. Here, when the packet data from the calling subscriber passes through the DSI 22 or the BAMI 26 instead of the PSI 24, it is applied to the TSL 56 via the DLC 54, in which case the called subscriber In the following description, the TSL 56 is transmitted to the called party via the TSL 56 -DLC 54 -DSI 22 or the BAMI 26.

On the other hand, the packet relay call processing operation in the case of the ISDN call processing differs only in the relay flow of packet data following the same control path as in the above-described relay call processing operation. That is, the packet data from the calling subscriber is transmitted to the PSI 24-TSL 56-PHM 44-TSL 56-SSL 66-TSL 56-calling side DCI 18-called DCI. It is delivered to the called party via (18) -TSL 56-SSL (66) -TSL 56-PHM 44-TSL 56-PSI 24. Here, when the packet data from the calling subscriber passes through the DSI 22 or the BAMI 26 instead of the PSI 24, it is applied to the TSL 56 via the DLC 54, in which case the called subscriber In the description of the latter part that is delivered to the TSL (56)-DLC (54)-DSI (22) or the BAMI (26) of course is delivered to the recipient. In addition, the communication between the PHMs 44 is performed by using an internal bus 44a.

In the case of the ISDN call processing, the No. 7 processing operation differs only in the flow of No. 7 data following the same control path as in the above-mentioned relay call processing operation. That is, No. 7 data from the calling subscriber is applied to the TSL 56 through the subscriber interface device (not shown), and thereafter, ST 42-TSL 56-SSL 66-the calling DCI 18 )-Called party DCI (18)-TSL (56)-SSL (66)-TSL (56)-ST (42)-TSL (56) Delivered. The communication between the ST 42 is performed by using a group bus 42a.

This time, in the case of the frame relay call processing operation as another example, the same operation is performed by simply replacing the PHM 44 in the above-described packet relay call processing operation description with the FRH 46.

On the other hand, in the case of PCI call processing, it is only necessary to replace the ASI 12 with the PCI 20 in the above-described local call processing operation description, and in the case of FLC-COT call processing, the ASI ( It is only necessary to replace 12) with the FI 28.

In addition, the control path between the ASS (100) and the CCS 200, ASP (34)-CI (36)-TSL (56)-SSL (66)-CIPCU (72)-CI (36)-CCP (58) ).

According to the present invention as described above, as all the application functions are integrated in the ASS, it is very easy to implement even when implementing additional functions later, the control system is very simple due to the reduction of the number of main and peripheral processors per subsystem, Improvements in the bus structure have the advantage of increasing capacity and speeding up peripheral processors and devices.

In addition, since services can be distributed to each main processor, continuous service is maintained and reliability is further increased.

By allocating the role of the time switch by the DLC, it is possible to reduce the concentration of the subhighway (that is, the connection path between the TSL and each component in the ASS) to the time switch.

Accordingly, various system applications such as Local, Tandem, Toll, IGS, ISDN, STP, AIN (Advanced Intelligent Network), Frame Relay, Centrex, PCS, IDLC (Integrated Digital Fiber Loop Carrier), TMN (Telecommunication Management Network) And services are easily provided.

Claims (13)

Subscribers (including ISDN), trunk lines, No.7 / Packets, etc., integrate the functions and perform various exchange functions, access switching processor (ASP) 34, and access switching subsystem peripheral processor ASS-PP. An Access Switching Subsystem 100 comprising: 38; A central control subsystem (CCS: 200) for performing overall maintenance and management of the system, including a central control processor (CCP) 58, an ethernet and X.25 interface processor (EXIP) 60; It performs the routing function of the centralized call processing while connecting between the match exchange subsystem (ASS: 100) or between the match exchange subsystem (ASS: 100) and the central control subsystem (CCS: 200). A system structure of a TDX-100 switch comprising a connection network control subsystem (INS: 300) including an Interconnection Network Processor (68) and an Interconnection Network Processor Peripheral Processor (INS-PP). The system structure of a TDX-100 switch according to claim 1, wherein the communication between each peripheral processor and each device is performed using a PCM bus. The system structure of a TDX-100 switch as claimed in claim 1, wherein the data link between the matching exchange subsystem (ASS: 100) and the connection network control subsystem (INS: 300) is cross-duplexed. 4. The system structure of TDX-100 switch according to claim 3, wherein the time slot between data links is 2K. The system structure of the TDX-100 switch according to claim 1, wherein in the case of No. 7, a group bus (42a) is adopted to perform communication between signaling terminal groups (STGs). The system structure of a TDX-100 switch according to claim 1, wherein the packet is configured to perform communication between packet modules by employing an internal bus (44a). The system structure of a TDX-100 switch as claimed in claim 1, wherein the network control subsystem (INS: 300) is provided with a space switch link (SSL: 66) in which a space switch and a central data link are integrated into one. The system structure of a TDX-100 switch according to claim 7, wherein the space switch has a capacity of 96 × 96. The system structure of a TDX-100 switch according to claim 1, wherein the capacity of the time switch of the time switch link (TSL: 56) provided in the matching exchange subsystem (ASS: 100) is 10K x 4K. 10. The system structure of a TDX-100 switch according to claim 9, wherein an aggregation ratio of said time switch is 2: 1. 12. The TDX-100 according to claim 9 or 11, wherein a front line of the time switch link (TSL: 56) is provided with a digital line concentrating means (DLC: 54) to reduce the heavy load of the time switch. System structure of the exchanger. 12. The system structure according to claim 11, wherein said digital line collecting means (DLC) 54 is adapted to perform a multiplexing / demultiplexing function of PCM data. The system structure of a TDX-100 exchanger according to claim 12, wherein the collection ratio of said digital line collecting means (DLC: 54) is 2: 1 to 4: 1.