JPS59178055A - Accessory device connection method - Google Patents

Abstract

PURPOSE:To minimize the load of the hardware at a terminal device of the main body side by deciding a bit location to which information of an additional equipment is accommodated on a transmission format and adding addition information to this location. CONSTITUTION:While a signal outputted from a microprocessor 5 of a key telephone main body 15 is connected conventionally to a subscriber signal line, the signal is outputted as it is to an automatic dial device (additional terminal device) 4 in this system. The additional equipment information is added next to the dial information in this format. Further, the automatic dial device 4 converts the part of the additional equipment information in this signal into the combination between the dial information and the automatic dial information and outputs the result to a subscriber signal line as the automatic dial information.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the realization of a key telephone connected to an on-switch device, a telephone terminal, and a key telephone, and an additional function added to the key telephone as a 2-pin telephone.

Various options are possible for connecting to a key telephone. The most typical ones are auto-tie,
There are digital communication devices, data communication terminals, etc.

The two are completely different from the point of view of 9j1 control, and since the audio system is responsible for making calls, it handles control signals between the key telephone and the telephone system. On the other hand, gIM terminal devices for data communication mainly relate to call information, and there is a possibility of realization in teletalk telephones.

A simple connection diagram of a conventional auto-dial device is shown in FIG. Here, the conventional telephone 3 uses analog signals for calls, and uses intermittent DC loops for control purposes. When dialing is sent out, the switch 2 is basically placed on the auto-dial device (attached terminal) 4 side, and a dial signal is sent to the main device 1.

However, in the case of a key telephone, the telephone signal interface is different from the conventional one, so the method shown in FIG. 1 cannot be used. This type of key telephony uses a micro processor for control. As an example, a configuration as shown in FIG. 2 can be considered in which the microprocessor 5 reads switch information of the auto-dial device (attached terminal) 4. The signal line between the key telephone 15 and the auto-dial device (attached terminal) 4 is connected by the 7-tahas of the microprocessor 5 or the I10 port of the microprocessor, and the signal line is normally transmitted in the preckle format h'-C/X, Fig. 3 The format is as follows, and there is a part in which the tire information is inserted into the uplink flfl control information from the key telephone I5 to the main device 1. Even when the key telephone 150 dial (not shown) is used, the microprocessor 5 processes the signal by itself and converts it into the format shown in FIG. 7. Signals are transmitted to the main device J via the 7-linod circuit 7.

This method is the simplest and easiest to understand method due to the nature of the microprocessor, but it has the following drawbacks:

1) Since there are many signal lines between the key phone and the auto-dial device, the amount of signal wire increases. .

2) Even though auto and dial devices are optional, the software Uni I must be prepared in advance on the key telephone.

Therefore, these drawbacks will be considered as follows.

]) can be accommodated if the increased hardware is only needed on the auto-dial device side, but there are some that require a 7-address decoder or the like to be prepared in advance on the main body key telephone.

The drawback of 2) is essentially unavoidable.

In addition, the characteristics of equipment in the A category are fixed. As exchange equipment becomes more sophisticated, the processing inside key telephone terminals becomes more complex.
Currently, processing speed, memory capacity, etc. are close to their limits.

The present invention minimizes the burden on the hardware of the main body terminal by determining the bit position in which the attached device information is stored in advance on the transmission format and adding additional information to this part.

Moreover, it provides a system for connecting connected devices that eliminates the burden of software.

The present invention will be explained in detail below.

FIG. 4 shows an embodiment of the present invention using an auto-dial device as the accessory device 4, which will be explained in detail below. The signal output from the key telephone main body 150 microbe p setter 5 is connected to the subscriber's Igo line in the case of a child, but in this system it is output to the 1 inch auto dial device (attached terminal) 4. The format is as shown in FIG. 5, and the auto-dial device (attached terminal) 4 converts the information part of the attached device 35 in this signal into the format shown in FIG. It outputs to the line.

FIG. 7 shows a system similar to the above applied to a digital communication signal line, where 9 is a transmitter, 10 is a receiver, 11 is an analog-to-pretal converter, and 12 is a pre-to-analog converter. In this case, the transmission/reception format is such that Tm and Td arrive alternately as shown in FIG. 8, and the data terminal sends and receives the data terminal signal portion.

It is sufficient to operate so as not to be involved in the voice part of the call.

FIG. 9 is an example of an actual circuit according to the present invention. The microprocessor 5 of the key telephone main body 15 outputs a synchronization signal to the microprocessor 8 of the accessory device when the bit time Td in which the accessory information on the transmission format is accommodated is reached. The microprocessor 8 of the accessory device outputs the accessory device information to the time slot + Td prepared for the accessory device information in response to the synchronization signal.

As explained above, according to the present invention, (1) the amount of information added by the equipment of the 1st class is limited within a certain range, and this information is inconsistent with the information of other key telephones. If you don't want to use it, the one-bokuto type has the advantage of requiring minimal hardware and no software at all on the key telephone side.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a diagram showing an example of a conventional auto-dial device.
FIG. 2 shows an example of an automatic tire system using a microprocessor. FIGS. 6 and 8 are time charts showing the transmission 7-hour system 11, and FIG. 41 and FIG. 1... Main device, 2.14... Switch, 3-
Conventional telephone, 4. Attached terminal, 5, 8. Microprocessor, 6. Handset, 7. High frit circuit, 9. Transmitter, 10. Receiver, ] 1. Analog-to-digital conversion circuit, 12... 191 denotal/analog conversion channels, 1.3... Data terminal, 15... Key telephone. Patent Applicant Iwasaki Tsushinki Co., Ltd. Representative Person Hito Tsuka 1 person outside the university i1 Procedural amendment (method) 116 July 7, 1958 Kazuo Wakasugi, Commissioner of the Patent Office] Indication of the case Patent Application No. 5E3-51420 2 Name of the invention Attached device connection method; 3 Person making the amendment Case and Relationship: Applicant (018) Iwasaki Tsushinki Co., Ltd. 4 Agent 1-23-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Correct “Figure 7 is” to “Figure 77, Figure 9 is” in line 4 of page 7 of the specification .

Claims (1)

[Claims] In a device equipped with a terminal having a function of transmitting and receiving control signals to and from the main device, and an accessory device having a function of transmitting and receiving control signals to and from the terminal, the control signals of the terminal and the An accessory device connection method characterized in that a time slot for the accessory device i4W is prepared in advance during formatting, and a control signal necessary for the MJ accessory device is branched from or pushed into the time slot.