JPH0226829B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a switchboard connection device in a telephone switching system.

[Prior art]

Conventionally, switchboards have generally been incorporated as a function of telephone exchanges (particularly automatic telephone exchanges), and are capable of switching connection operations for manual relay calls, international calls, reception/guidance calls, and other calls that require operator intervention. is going on.

Hereinafter, an outline of its operation will be explained with reference to a relay system diagram of an example of a conventional switchboard connection system shown in FIG.

Here, 1 is a central control unit (CP) that centrally controls and processes the switching connection operations of the entire automatic telephone exchange (for example, a time-sharing type), and 2 is a time-sharing switch (TSW) related to a call path switch. , 3 is a switchboard trunk (POT), and 4 is a switchboard (OPD), which is housed in the above-mentioned time division switch and is comprised of a key, a lamp, a display, a headset, and other items necessary for the operator's switching connection operations. , 5 is a switchboard controller (POC) for controlling the same, 6 is a digital trunk (DT) for the general trunk line accommodated in the time division switch, 7 is a digital trunk (OGT), 8 is a The accompanying trunk (ICT) and 9 are subscriber telephones (SUB).

This is a representative switchboard connection.
A case in which a connection (incoming call) request is received will be explained.

First, the central control device 1 connects the trunk 8 to the switchboard 4 via the time division switch 2.

At the switchboard 4, the operator performs the necessary operations according to the content of the service request, such as checking the calling party's number, and then the central controller 1
Under the control of , the switchboard 4 extends the connection path and connects to the relay trunk trunk 3 via the time division switch 2, and then further connects it to the desired subscriber telephone 9, etc. via the time division switch 2. connected. In this case, the operator at the switchboard 4 performs an operation such as calling back the subscriber in order to connect the incoming trunk 8 and the subscriber telephone 9.

In this way, the conventional switchboard connection system uses the same time division switch 2 and central control unit 1 as the general automatic call connection, so not only does the scale of the automatic telephone switch become large, The software required to perform these operations is also complex, and
It was not easy to add services and functions.

In particular, since all switchboard operations and connection control are performed by receiving and processing information in the central control unit 1, in order to avoid connection delays, regardless of the size of the switchboard, The central control unit 1 requires high-speed processing capability and large-capacity storage capability, making it uneconomical.

[Purpose of the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned drawbacks of the prior art and to provide an economical and functionally flexible switchboard connection device.

[Summary of the invention]

The configuration of the switchboard connection device according to the present invention is such that when a switchboard is provided exclusively for connecting manual relay calls, international calls, reception/guidance calls, and other calls that require operator intervention, It is housed in a split switch, and its control device connects calls between the automatic telephone exchange and the above-mentioned switchboard via a tandem connection of inch-channel digital trunks between them via the above-mentioned time division switch. It was designed to encourage

In short, by completely separating the functions of the part that only performs the general automatic exchange connection operation and the part that only performs the switchboard connection operation, and by performing the connection operation regarding the switchboard via a dedicated time-sharing switch, By eliminating the need for high-speed processing and large-capacity storage capacity in the central control unit on the automatic exchange side, reducing the scale of the equipment and simplifying the software, we aim to achieve economical efficiency. It is intended to add functional flexibility such as the addition of services and functions on the switching board side.

[Embodiments of the invention]

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 is a relay system diagram of an embodiment of the switchboard connection device according to the present invention.

Here, 10A and 10B are an automatic telephone exchange and a switchboard device in the telephone exchange system, respectively, and 11A and 11B are a central control unit that performs necessary exchange connection control and processing for the automatic telephone switchboard 10A and the switchboard device 10B, respectively. The device (CP), control device (OCP), 12A, 12B are time division switches (TSW, TSW-P), 1 for necessary exchange connection to the automatic telephone exchange 10A and the switchboard device 10B, respectively.
3 is a switchboard trunk (POT); 14 is a switchboard (OPD) having functions necessary for switching connection operations and housed in the time division switch 12B; 15;
is the switchboard controller (POC) that controls it; 16, 17, and 18 are the digital trunk (DT), outgoing trunk (OGT), and incoming trunk (ICT) for general trunk lines; 16A, 1
6B is an automatic telephone exchange 10A, a switchboard device 10
Each opposing digital trunk (DTA, DTB) for connection between B, 19 is a subscriber telephone (SUB)
It is.

First, the operation of connecting the automatic telephone exchange 10A to other stations via the digital trunk 16, outgoing trunk 17, and incoming trunk 18 is the same as in the conventional example.

All necessary connections between the automatic telephone exchange 10A and the switchboard equipment 10B are made through each time division switch 12A,
Digital trunk 16A accommodated in 12B,
16B in tandem connection.

The switching board connection operation will be explained below.

For example, a switchboard connection call that arrives at the incoming trunk 18 using a specific number or the like is transferred to the digital trunk 1 via the time division switch 12A under the control of the central controller 11A, similar to a general tandem connection call.
Connected to 6A.

When the control signal is transmitted to the digital trunk 16B in inch channel format and detected by the control device 11B, the control device 11B transfers the digital trunk 16B to the switching trunk via the time division switch 12B based on the control signal. 13 to the first terminal of relay console 13, and connect the second terminal to the vacant switching console 14, as well as connecting the relay console controller 1
5 to display a switchboard connection request.

As a result, the operator at the switchboard 14 can:
After verifying and checking the caller's phone number,
A connection operation to the called party's telephone 19 is performed.

This called side connection is first performed from the third terminal of the switching trunk 13 to the time division switch 1 under the control of the control device 11B that has received the connection operation information.
2B to a digital trunk 16B (different from the one for the calling party connection described above).

Next, the required signals are transmitted to the central controller 11A via the opposing digital trunks 16B in an inch channel format, and under the control thereof, the opposing digital trunks 16A are transmitted to the time division switch 12.
Connect to the desired subscriber telephone 19 via A.

As a result of the above, the calling side of the switchboard trunk 13,
Once the connection on the called side is completed, under control from the switchboard 14, it is possible to talk between the two parties, and if necessary, it is also possible to make a three-party conversation including the operator.

At the same time as the above operations, billing processing operations and other operations required for connection to the switchboard are performed under the control of the control device 11B, and then the series of operations ends.

As mentioned above, on the automatic telephone exchange 10A side,
There is no need to perform any switching board connection operation, and the switching board device 10B simply operates as if it were treated as another station, so that there is no need to transfer or process control information.

Therefore, as a result of separating the switchboard connection function, the automatic telephone exchange 10A can reduce the scale and simplify the hardware and software, and can also be installed with new switchboard equipment without any impact. I won't receive it. The above is possible regardless of the type or system of the automatic telephone exchange 10A.

Similarly, the switchboard device 10B is capable of interoperating with the automatic telephone switchboard 10A even if it is physically installed separately, and the installation space is reduced by using the time division switch 12B for connection to the switchboard. If the number of units is a considerable number or more (for example, 30 or more), it will be sufficiently economical.

Further, the addition and expansion of the functions of the switchboard service can be handled only on the switchboard device 10B side, providing flexibility.

Note that by separating the two as described above, even if a failure occurs, it will not affect each other and its range will be limited, so reliability can be improved.

〔Effect of the invention〕

As described in detail above, according to the present invention, the economic efficiency and functional flexibility of the switchboard connection system can be obtained, so that it has a remarkable effect on economicalization, improved operability, and improved reliability of the telephone switching system. is obtained.

[Brief explanation of drawings]

FIG. 1 is a relay system diagram of an example of a conventional switchboard connection device, and FIG. 2 is a relay system diagram of an embodiment of the switchboard connection system according to the present invention. 10A... automatic telephone exchange, 10B... switchboard device, 11A... central control device, 11B... control device,
12A, 12B...Time division switch, 13...Switchboard trunk, 14...Switchboard, 15...Switchboard controller, 16, 16A, 16B...Digital trunk, 17...Outgoing trunk, 18...Incoming trunk, 1
9...Subscriber telephone.

Claims (1)

[Claims] 1. A switchboard, a dedicated time division switch for connection to the switchboard that performs at least switch-specific call connection operations, means for connecting the dedicated time division switch and an automatic telephone exchange in an inch channel format, and connection of signals in the inch channel format. A switchboard connection device characterized by having a dedicated control processing means for operating and controlling operations.