JPS5840968A - Power supply applying system - Google Patents

Abstract

PURPOSE:To use the common part of a terminal controller even for an extension call which receives no power froem a station, by providing a commonly used part for both a power supply which is separated and extracted out of the information fed from a trunk line, and a power supply which is fed independently at the side of the terminal controller. CONSTITUTION:The information fed from a station is separated into the power supply control information and the call information through power supply separating parts DSE1 and DSE2. The clock component is extracted through transmission control parts DCNT1 and DCNT2, and both the call information and the control information are extracted through a frame synchronizing circuit FSY to be fed to a signal processing part PCNT of the common part COM and to a switch part SW respectively. The power supply information is fed to the parts DCNT1 and DCNT2 from power supply starting parts P1 and P2, and at the same time an OR is secured between the power supply from a power supply DEN and the output of a diode via diodes D1 and D2. Then the power supply information is fed to the part COM, extension control parts SCNT1 and SCNT2, and power supply superposing parts DD1 and DD2 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply system in a terminal control device that operates by receiving power from a telephone exchange or the like.

In line with recent advances in semiconductor technology, digital control ICLS for communication and control information is now available in telephone switching systems.
I (large integrated circuit) etc. are being widely introduced. Then, when the subscriber line to which the subscriber's telephone is connected was digitally controlled, in addition to the telephone M& function that sends and receives normal call information, the subscriber *1 was used to connect data terminals, etc. Various non-telephone functions for sending and receiving data information [
It becomes possible to provide stones. These phones M&N. To improve communication services by connecting a terminal control device with a high-resolution telephone function capable of providing multiple telephone functions and various services (for example, a button telephone function) to a subscriber line from an exchange. is being carried out. But a terminal controller? When going all electronic (digital), it is difficult in terms of power consumption to operate the terminal control device and the extension subscriber telephones connected to the terminal control device using only the supply from the station power supply. Considering that mutual communication is performed when the iE is not being received from the nine stations, it is necessary to connect the station power supply and the terminal's own power source (for example, commercial power supply or
etc.) and t must be used together.

The object of the present invention is to provide power to terminal control devices, etc., in which communication information is transmitted and received as digital information.In particular, the basic functions of telephone exchanges (calls made and received from the central office line to the terminal) are realized by central office power supply. By using a completely new power supply method that combines the power supply from one station and the independent power supply on the terminal device side in communication systems such as , and reduce the power consumption of the local power supply.

In order to achieve the above objectives, Honjitsu F! A is central line and inner 1
1! ! In the terminal control device that accommodates the terminal control device, the power source is separated and extracted from the information sent from the central office line, and the power source is independently supplied on the terminal control device side. It is characterized by supplying power.

The point of view of the present invention is to take into account the service conditions of current key telephones, etc., and even if power is not supplied to the terminal device side due to a power outage, etc., the basic telephone functions (outgoing and incoming call functions) for the central office line can be maintained. It is to guarantee.

Therefore, additional functions (caller number display, inter-extension communication, etc.) and non-telephone communication functions do not operate during a power outage. This station #
Guarantees basic telephone functions using (1) all extension telephones will hold calls in the event of a power outage and power re-energization during communication, and (2) calls will be made and received using a specific telephone during a power outage. It will be realized.

The present invention will be explained in detail below using examples.

Fig. 1 is a block diagram of the terminal control device according to the present invention, Fig. 2 is a block diagram of an extension subscriber telephone connected to the terminal control device, and Fig. FIG. Reference numerals commonly used in the figures indicate the same thing.

In the H1 diagram, L Uta + L @ + L @ ' +
DSE, DSK, power supply separation section, DCNTl, DCNTl, Fi transmission control section, etc., which are connected to the Lm' central office line and indicate that the STA extension telephones and their terminals are connected. It consists of a frame synchronization circuit FSY, a synchronization circuit C that extracts four blocks, etc., and COM is a common part.
Ninth switch SSW for switching between central office line and extension line, exchange I
The signal processing unit PCNT controls and manages signals such as outgoing calls, incoming calls, and dialed digit reception with I (office) and extension telephones, and the stone meing generation unit 1iTG, 8CNT, which supplies tying signals to each part.

5CNTI is an extension control unit and a frame synchronization circuit FS.

Frame assembly circuit FC, driver/receiver circuit DR@
It consists of DD,, DD snow is the power supply 1 tatami section, Pl.

Power source (in this implementation, 9 commercial power supply units (V supply) [shown])
, D0-D are diodes, cswI'i terminal device it
#Independent detection circuit for detecting power failure, d.

~d・, dll* (iH is the power supply system, C1 to C4F1 is the drama system. (In this example, we will explain using an example of 2 stations and 2 extensions, but it is not limited to this. (Needless to say.) First, to explain the operation of the entire terminal control device, the information sent from the station is separated into WM, control information, and call information at the Fi power separation section at the ASG+DSE.Furthermore, the control information is , the call information is transmitted to the transmission control unit DCNT through the aBQL, the bit synchronization circuit C extracts the shifting component, and the frame synchronization circuit FSY extracts the call information and control information. The control information is sent to the signal processing section PCNT of the common section COM, and the call information is sent to the switch section SW, which is driven by the signal processing section PCNT so as to be connected to the specified inner edge.

In extension control 1111 section 5CNT+, s, call information is 7
The driver/receiver circuit DRi is assembled into a frame and the driver/receiver circuit DRi is controlled, and the power superimposing section DD, ... superimposes power information and sends it to the extension, while the information from the extension is received by the driver/receiver circuit DR, and frame synchronization is performed. For power call information, switch section S
W, the signal information is sent to the signal processing unit PCNT. That is, the exchange of information between the exchange and the extension according to the present invention is carried out in a 7-rem synchronization system, commonly called ping-pong transmission, in which transmission and reception are alternately performed while maintaining bit synchronization.

-1 The power supply of the present invention is provided by the power supply separation unit DSE+,*
The extracted power supply information is sent from the power supply starting unit P1+1 to each transmission control II DCNTl 1, and is also sent to the common unit COM and the extension control unit BC by ORing the diode output with the power source from the power source DEN via one diode D+ -D*.
NT,, the power supply is superimposed [DD,, it is sent to the DD fox.

Next, check the configuration of the extension telephone connected to the terminal control device in form 2.
In order to explain with the diagram, a constant voltage power supply section DD is converted into a necessary voltage internally by a power supply separation section DD■.

K and the driver/receiver circuit DRC1 frame synchronization/assembly unit F1 timing generation unit TGC.

The voice section T1 is separated from the information supplied to the telephone output control section DIOC. The received information from the station is extracted by frame synchronization, and the audio information is converted into analog information by the audio section T consisting of a copic amplifier, etc. and sent to Ndo Sesoto H, and other telephone number information etc. is sent to the telephone output control section DIOC.
t is displayed on the display DSP. Among the information sent to the station, calls are made by turning on the hook switch H8.
Dial information is entered by key K, power input/output control unit DIO
The audio from the handset H is digitized by the audio section via C, assembled into frames by the frame synchronization and assembly section, and sent to the terminal controller.

The non-telephone terminal TN is connected to the non-telephone terminal control section T10C and performs information searching with the frame synchronization/assembly section. Note that the non-telephone terminal control section is supplied with power from an independent power supply section TDEN.

Next, the power supply system of the present invention will be further explained in detail with reference to FIG. The power source starting section in FIG. 3 is a detailed illustration of the power source starting section P+(Pz)' in FIG. 1. straight*
(da) -Cs(Cm) correspond to each other.

In Figure 3, DD is the constant voltage power supply unit bDI・~D11
is diode T is transistor I, J, 88Tmu d4I
In order to be able to make and receive calls in the event of a power outage, as will be described later on a fixed common telephone, the telephone will be able to make and receive calls during a power outage.When a power outage is detected by the power outage detection circuit DET,
) to be done. First, we will explain the O operation when the (commercial) power source DEC) JT is energized. Even when there is no call originating or receiving from the central office line (that is, when power is not supplied from the central office), a diode bridge is used to convert the terminal control value to the common section, each internal control section, and the non-telephone terminal control section of the extension telephone. (Power is supplied to each part.)

Therefore, when the extension telephone makes a call, off-hook information is transmitted to the terminal control device, and the start switch of the power start section (
Transistor/T) t-on.

DC start for the station (mu→D,・→T -46~b -D
Multiply □→B). Thereafter, synchronization is established with the terminal control atti station, and signal O transmission and reception are performed.

In the case of an incoming call, B-eD, 1-+a~1) via the diode bridge of the stain source activation part due to the polarity change from the station.
-1) A loop of D, , →M is formed and power is supplied to the terminal control value P.

In addition, calls between the central office line and extension telephone are fIaw.
By turning on the terminal power supply switch C3Wt corresponding to the 1-talk machine, even if the power supply DEN is out of power during a P1 call, power from the office line in use is supplied via the diode DI (D,), and the office line call is continued. is retained. This terminal power supply switch C8W is kept off during an extension call.

Regarding the cutting pressure of the call wave, the pressure from the extension telephone is 7. When the signal processing unit detects the information, the terminal control device issues a disconnection request signal to the station, and a disconnection completion signal from the station activates the power supply start switch (transistor T) of 11Pt (Pz).
Set to t-off and open the loop. At the same time, turn off the terminal power supply switch C8W.

On the other hand, the power supply DIN on the terminal control device side is unable to supply power during a power outage, and incoming calls from the station at this time are
The e! - In order to solve this problem, it is possible to set the switch Ha in conjunction with the hook switch of a specific extension telephone (it is possible to install it on one or more telephones depending on the number of lines, etc.).
], it is possible to start the station with direct current even if the start switch T does not work. That is, as explained earlier, the power supply section DE
Since the power supply from N is cut off, the power cutoff detection circuit DET turns on the switch SIt (for example, it is sufficient to keep the switch 5st off when the power is being supplied). Therefore, Mu = D1o -H8-481-e a
~b=DH→B loop makes it possible to call directly to the central office line.

(9) By setting the output voltage of the commercial power supply unit, etc. higher than the output voltage of the power source startup unit (from the station line), the power consumption of the station power supply can be reduced due to the diode-OR characteristics.

As explained above, according to the present invention, by having a section for sharing the station power supply with an independent power supply on the terminal device side using a diode-OR, it is possible to share the common power supply in the terminal control device even in extension calls that do not receive the station power supply. The circuit can be used without complicating the hardware configuration, making it more economical and highly reliable.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a terminal control device according to the present invention, FIG. 2 is a configuration diagram of an extension telephone connected to the terminal control device, and FIG. 3 is a configuration diagram of a power supply starting section of the terminal control device in FIG. 1. It is. DSEt-DSEt; power supply separation section, DCNT+, D
CNTa: Transmission control section, COM: Common section, 5CNT,
嘗 ; Extension control section, DD, ; Power supply weight section, pHP
Snow: power supply startup section, DEN: independent power supply section, DEN: power failure detection section. Continued on page 11 0 Inventor Satoshi Iizuka 1-2356 Takeshi, Yokosuka City Yokosuka Telecommunications Research Center, Nippon Telegraph and Telephone Public Corporation Applicant Nippon Telegraph and Telephone Public Corporation

Claims (1)

[Claims] In the terminal control device ft that accommodates the office line and extension line, f1
A unit that shares the power source separated and extracted from the information sent from the 11th station line and the power source that is independently supplied from the 1st terminal control device side? 4 power supply system characterized in that power is supplied to each part of the terminal control device.