JP2994504B2 - Telephone system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control of a subscriber circuit in a time-division exchange, and is particularly expected to realize various services using a cash or a prepaid card in a public telephone, a subscriber line test, and the like. The present invention relates to a telephone system for processing incoming and outgoing calls that require special processing to a host system . In addition, the telephone system for reducing the load on the local exchange and the common line signaling network in the processing of the above-mentioned incoming and outgoing calls , thinning the connection between the local exchange and the host system, and improving the processing capacity.
Regarding the stem .

[0002]

2. Description of the Related Art A subscriber circuit (hereinafter, referred to as an SLIC) of a conventional time-division exchange is equipped with all functions for monitoring and controlling telephone terminals except for low-level signals in a telephone band. Originating <br/> the signal system monitoring and control functions (1) originating (OFFHOOK) monitor (2) dial pulse monitor (3) Pay party response signal (Rebasu) control during a call (4) coins to the public telephone Transmission control of various control signals including storage (5) Monitoring of coin storage identification signal of public telephone.

[0003] The terminating function includes (1) an intermittent call signal (IR) or a continuous call signal (C).
R) Transmission control (2) Non-ringing incoming call control to a telemeter terminal or the like (3) Disconnection monitoring (ONHOOK)

[0004] Further, as maintenance / test system functions, there are (1) line side drop switch (LT) control, and (2) station side drop switch (NT) control, which are used for subscriber line test and connection to the spare SLIC in case of SLIC failure. Used for switching, SLIC characteristic test, and the like. Each of the above functions of the SLIC is independently processed by the subscriber line exchange accommodating the SLIC, or the subscriber line exchange centrally controls and manages the instruction based on an instruction from the host system. . In addition, Tsuken Real Report 31, NO. 11, P1995, "Concentration system of digital subscriber line exchange and subscriber circuit", describes an example of the above apparatus.

[0005]

With the recent advancement and diversification of telephone services, the processing performed by the subscriber line exchange has become complicated and its processing capability has reached its limit. In addition, the amount of communication with a higher-level system is increasing and becoming more complicated, and the capacity of a common channel signal network, which is a communication path between switching nodes, has reached its limit. It is an object of the present invention to provide various types
Service node system that provides telephone services (upper
System) to reduce the processing load on the subscriber line switch ,
And a flexible telephone service
To provide a stem .

[0006]

SUMMARY OF THE INVENTION To solve the above problems, the present invention provides a method for connecting a telephone subscriber to a subscriber circuit (SLIC).
To house and monitor and control this subscriber circuit,
Subscriber line exchange for outgoing and incoming connections for telephone subscribers
And a higher-level device connected to the local exchange via a relay network.
System, wherein the subscriber line exchange includes
The monitoring / control channel of the user circuit matches the audio channel.
Switch connection to the upper system via the relay network.
Connection means, and the higher-level system has a service
The subscriber circuit of the subscriber line exchange is connected to the relay network accordingly.
Control directly using monitoring and control channels via
A telephone system comprising means . Ma
Further, the present invention provides a host system of the telephone system,
It is characterized by comprising a seed telephone service system.

[0007] Further, the above high-level system performs subscriber control such as recall after termination of a call of an additional charge service for a subscribed call made by a subscriber, and direct control of charge collection for an outgoing call from a public telephone. To Further, the above upper system controls the subscriber, such as recalling, after the end of the call for making an application call to a fire station, a police station, or the like performed by the subscriber. further,
The above system directly controls and monitors the subscriber's circuit, and allows the subscriber to report failures and make calls such as line test connections.
Perform functional tests such as calling and dial pulse.

[0008]

By directly controlling the SLIC from the host system, the processing amount of the local exchange is reduced, and the communication amount between nodes of the common line signaling network is also reduced. Also, various additional fee service system, fire and police commander STAND special call processing and subscriber Sen交換機in the subscriber line testing systems and the like, tolling processing amount to the public telephone is reduced in the additional fee service . In addition, the reduction in the processing amount of the subscriber line exchange reduces the coupling between each service system and the subscriber line exchange.

[0009]

1 is a conceptual diagram of a time division exchange according to the present invention. The subscriber circuit (SLIC) 2 is connected to the telephone (TEL) on a one-to-one basis, and performs monitoring and control on the telephone. The SLIC 2 converts upstream and downstream voice channel signals into digital or analog signals, and connects a telephone monitoring / control channel to the line concentrator 3. The concentrator 3 has a function of detecting a call of the telephone 1, a function of monitoring / controlling the reception of a dial pulse, and the like, a function of concentrating a large number of SLICs, and transmitting their voice and monitoring / control channels to a time division network (TDNW) 4. It has a connection function and the like.

[0010] The concentrator 3, TDNW4 a digital repeater synchronous terminal equipment 5 or the like is is controlled by the control unit 6, the originating-wearing Cinco to the host system to monitor and control channel all together with audio channels SLIC Connect via relay. The connection control of the voice and the monitoring / control channel to the upper system is performed by (1) a method performed from the signal device 7 using the line signal of the synchronous terminal device 5 (2) The control device of the higher system is operated by the common line signal network. There are two types of direct method.

In the case of the line signal system (1), the line signal channel of the synchronous terminal device 5 is connected to the signal device 7 via the fixed path of the TDNW 4. According to the present invention, in any of the above methods, the outgoing call management and processing after the completion of the relay connection to the upper system are all performed by the upper system. As a result, it is possible to cut approximately monitoring from a higher treatment with local switch. As a result, when a call is received from the upper system to the telephone, only the voice and the monitoring / control channel are connected, and control such as call / answer monitoring is not required. The signal device 7 shown in FIG. 1 has a function of transmitting a dial tone (DT) and transmitting and receiving a multi-frequency signal such as a PB signal in a voice band, in addition to a line signal monitoring / control function. The path indicated by a solid line and its arrow from the SLIC 2 to the host system indicates the direction of the voice, and the path indicated by the broken line indicates the SLIC monitoring / control channel.

In the time-division exchange according to the present invention shown in FIG. 1, a new structure is required for the concentrator 3. In other parts, the conventional switch configuration can be used as it is by realizing the pair connection of the voice and the SLIC monitoring / control channel by the control device software. FIG. 2 is a diagram showing an embodiment of the concentrator 3. Note that SL in FIG.
The IC 2 is shown included in the concentrator 3. SLIC
The multiplexing / demultiplexing circuit 31 multiplexes / demultiplexes the sound from the second and the monitoring / control channel, for example, in units of 1024 circuits. The separated audio signal is connected to the concentrator switch 32, and the SLIC monitoring channel is connected to the concentrator switch 32 and the call monitoring circuit (LSCN) 33.

The SLIC control channels from the concentrator switch 32 and the SLIC control circuit (SSD) 34 are logically ORed by an OR circuit 35 to form a multiplex / demultiplex circuit 3.
Since it is input to 1, the control of the own station and the control from the host system become possible. The transmission from the telephone 1 is detected by the LSCN 2 and notified to the control device 6. The control unit 6 determines the telephone type from the subscriber data, and if the telephone is a DP telephone, controls the concentrator switch 32 to switch the SLIC monitoring channel to the dial pulse receiving circuit (DPR) 36 and the disconnection / response monitoring circuit (TSCN) 37. Connect and receive the called party number. The audio channel is connected to the signal device 7 via the TDNW4.
And a dial tone (DT) is transmitted.

If the telephone 1 is a PB telephone, the signaling device 7 receives the other party's number through a voice channel.
If the connection destination is a higher-level system that requires voice and monitoring / control channel relay, the above connection is made first, and after the connection is completed, the monitoring channel of the telephone 1 is disconnected from the TSCN 37 by the concentrator switch 32 to monitor the telephone. Move the operation to the host system. In the control channel, the control data in the SDD 34 is invalidated to enable the control data of the upper system, and all the control is transferred to the upper system. When the connection partner performs only the voice relay connection as in the own station, the monitoring channel continues monitoring while being connected to the TSCN via the concentrator switch 32, and control data is transmitted from the SSD 34 to the control channel. .

FIG. 3 shows an example of the configuration of a host system when the connection control of the present invention is performed by a host system. The incoming call from the subscriber exchange is detected by the monitoring signal device 82 using the line signal from the synchronous terminal device 81 and notified to the control device 6. At this time, if there is data required to be transmitted / received to / from the exchange such as a telephone type or a service type, the time division switch 83 is closed, and transmission / reception is performed by the signal device 84 using a multi-frequency signal. Next, the voice channel (solid line) from the exchange is connected to various reception boards or service circuits to perform designated services. Monitor at the same time
The control channel (broken line) corresponds to S in the SLIC control circuit 85.
SD (subscriber circuit signal distribution circuit) 86 and TSCN circuit 8
7 so that all of the telephone monitoring and control required in a series of sequences corresponding to service types is performed on the host system side.

In the case of an incoming call to the subscriber line exchange, similarly, after completion of connection control with the exchange, monitoring is performed. A control channel is connected to the SLIC control device, and telephone monitoring for each service type. To do. Although not shown in FIG. 3, it is also possible to control the outgoing / incoming connection with the subscriber line exchange using a common line signal. Note that the TSCN circuit 87 is connected to the ONHOO of the telephone.
It also performs operations such as K, OFFHOOK monitoring, dial pulse reception, and coin identification signal monitoring of public telephones.

FIG. 4 is a conceptual diagram of a system to which the method of the present invention is applied. (1) When a call application is transmitted from the telephone (TEL) 1, the local exchange 90 makes a connection indicated by 91,
The voice and monitoring / control channel of the SLIC 2 corresponding to the telephone 1 is connected to the additional charge service system 95 via the relay network 94. Further, after the end of the call, the additional charge service system 95 directly notifies the call charge including the fee by recalling using the monitoring / control channel.

(2) When the telephone 1 is a public telephone and transmits a supplementary charge service such as telephone guidance, the local exchange 90 similarly performs the connection indicated by 91 and transmits the connection via the relay network 94. The voice and monitoring / control channel of the SLIC 2 corresponding to the telephone 1 are connected to an additional charge service system 95 having necessary service functions such as a guide function. The additional charge service system 95 directly performs charge collection control and collection confirmation corresponding to each service by using a monitoring / control channel.

(3) When a call is made from the telephone set 1 to a fire station or a police station, the local exchange 90 makes a connection indicated by 92 and establishes a connection of the SLIC 2 corresponding to the telephone set 1 via the relay network 94. The voice and monitoring and control channels are connected to a fire and police command system 96. In addition, the fire and police command stand system 96 directly performs control necessary for recalling the telephone 1 after ONHOOK by using a monitoring / control channel.

(4) When a failure report is transmitted from the telephone set 1 or when a test signal is received from the subscriber line test system 97, the local exchange 90 makes a connection indicated by 93, and a relay network. The voice and monitoring / control channel of the SLIC 2 corresponding to the telephone 1 is connected to the subscriber line test system 97 via 94. In addition, the subscriber line test system 97 monitors and controls the control required for the functional tests such as telephone call, call, dial pulse, and coin storage in the subscriber line test items, and the current SLIC corresponding to the subscriber.
And directly using In addition, the subscriber line test system 97 is a line side drop switch (LT) required in a SLIC medium test or the like.
Also, the control of the station side entrance switch (NT) and the like is directly performed.

[0021]

According to the present invention, the following effects can be obtained. (1) The special processing corresponding to various telephone service systems, which has conventionally been performed by the subscriber line exchange, can be directly performed by the host system side. Therefore, the subscriber line exchange having only standardized basic functions is provided. Can handle special processing for the above various telephone service systems,
This also makes it possible to improve the processing capacity of the local switch. (2) Since the higher-level service system directly controls the telephone terminal as needed, it is possible to reduce the amount of communication between nodes with the subscriber exchange and to reduce the load on the common channel signaling network. (3) Since the connection between each service system and the subscriber line exchange becomes thin, each service function is independently extended and
Can be developed.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a time division switch according to the present invention.

FIG. 2 is a configuration diagram of an embodiment of a time division exchange and a concentrator according to the method of the present invention.

FIG. 3 is a configuration diagram of an embodiment of a host system according to the method of the present invention.

FIG. 4 is a conceptual diagram of various systems to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telephone 2 Subscriber circuit 3 Concentrator 4 Time division network (TDNW) 5 Synchronization terminal device 6 Control device 7 Signal device 31 Multiplexing / dividing circuit 32 Concentrator switch 33 Call monitoring circuit (LSCN) 34 SLIC control circuit (SSD) 35 OR circuit 36 Dial pulse receiving circuit (DPR) 37 Disconnection / response monitoring circuit (TSCN) 81 Synchronous terminal device 82 Monitoring signal device 83 Time division switch 84 Signal device 85 SLIC control circuit 86 Subscriber circuit signal distribution circuit (SSD) ) 87 TSCN circuit 90 Subscriber line switch 94 Relay network 95 Additional charge service system 96 Fire and police command stand system 97 Subscriber line test system

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification symbol FI H04M 15/00 H04M 15/00 D H04Q 11/04 H04Q 11/04 B (58) Fields surveyed (Int.Cl. ⁶ , DB H04M 3/00 H04M 3/08-3/42 H04M 3/60 H04M 7/00-7/16 H04M 15/00-15/38 H04Q 1/20-1/26 H04Q 1/54-1/56 H04Q 3/42 H04Q 3/52 H04Q 3/70-3/74 H04Q 11/00-11/08

Claims (2)

(57) [Claims] 1. A subscriber line exchange which accommodates a telephone subscriber in a subscriber circuit, has means for monitoring and controlling the subscriber circuit, and performs outgoing and incoming connections of the telephone subscriber.
It has a host system connected to the exchange via a relay network.
In addition, the above-mentioned subscriber line exchange is provided with monitoring and
Control channel and voice channel
Connection means for exchange connection to the host system via
The above system is subscribed to according to the service.
Monitoring and controlling the subscriber's circuit of the local exchange via the above relay network.
Control means for directly controlling the
And a telephone system . 2. A high-level system according to claim 1, wherein said high-level system includes various telephones.
Telephone system characterized by comprising a service system
Tem .