JPH10285291A - Business telephone connecting adapter of computer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a computer to a specified connecting adapter so as to easily execute internet and personal computer communication by connecting the adapter to the modular jack of a business telephone which is provided in an office, etc. SOLUTION: A computer 2, a business telephone 3 and a receiver 4 are connected by an adapter 5. That is, the adapter 5 is provided with the modular jacks for the computer 2, the business telephone 3 and the receiver 4. The adapter 5 is provided with a circuit for automatically making the amplification or attenuation of an input/output level caused by difference in the specifications of unit elements in the receiver 4 definite in a telephone line level. Therefore, the computer 2 and the business telephone 3 are used and also connection is easily executed to personal computer communication and internet communication through the business telephone 3. The adapter 5 does not require setting work such as level adjustment, etc., at all so that it is easily used even by the beginner of the computer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a business telephone connection adapter for communication by a computer.

[0002]

2. Description of the Related Art Conventionally, there has been known an adapter which enables this type of connection. The adapter had to be manually adjusted for differences in the transmission level of each handset. First, call the outside line on the telephone to check the carrier sound, and then switch to the computer to check the connection status. If the connection state is poor, the adjustment according to the adjustment manual is performed again, and the operation is repeated until the connection becomes possible.

[0003] The above method is very troublesome to operate and requires fine adjustments many times until connection is possible. In addition, the adapter cannot be connected to the Internet, so that the present communication needs There are problems such as not being able to cope.

[0004]

[Problems to be Solved by the Invention] When performing communication by a computer through a business telephone as described above,
There is a problem as described above. The problem to be solved by the present invention is this problem, and provides a business telephone adapter which enables connection to the Internet and allows easy connection.

[0005]

SUMMARY OF THE INVENTION The present invention uses a special connection adapter to eliminate the need to adjust input / output levels and to enable connection to the Internet. That is, the adapter of the present invention is connected between the receiver cords of a business telephone installed in an office or the like, and a computer is connected with the adapter. The adapter is characterized in that it has a circuit for automatically stabilizing the amplification and attenuation of the input / output level caused by the difference in the specification of the unit element of the handset at the telephone line level.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The adapter 5 of the present invention is connected between the receiver 4 and the business telephone 3, and the computer 2 is connected. Next, communication work is performed in the following manner. (B) Start up the computer 2 and put the communication software on standby. (B) Call an outside line from the business telephone 3. (C) Start the communication software. Then, communication such as personal computer communication and the Internet can be performed.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a case where a computer 2, a business telephone 3, and a receiver 4 are arranged on an office desk 1, and the computer 2, the business telephone 3, and the receiver 4 are connected to an adapter 5. The connection adapter 5 is detached from the modular jack 6 to which the receiver 4 is connected, and a modular plug 8 attached to the end of a cord 7 extending from the adapter is inserted. The modular plug 9 of the handset connects to the adapter, and the computer 2 also connects to the adapter. That is, the adapter has a modular jack for the computer 2, for the business telephone 3, and for the receiver 4.

By using the adapter 5, the computer 2 and the business telephone 3 can be used, and it is possible to easily connect to the personal computer communication and the Internet communication through the business telephone.

FIG. 2 shows an example of an automatic level adjustment circuit on the output (transmission) side. Depending on the polarity and model of the MP (mouthpiece), TM1 (transmitter terminal 1) may be positive and TM2 (transmitter terminal 2) may be negative, or the exact opposite. If TM1 is positive, R3 (resistor 3), D1
(Diode 1) and Q2 (Transistor 2) operate to change the amplification through R1 (Resistor 1) and R4 (Resistor 4). R3, D2 when TM1 is minus
(Diode 2) and Q1 (Transistor 1) operate,
The amplification degree is varied through R1 and R4. R2 (resistor 2) and C3 (capacitor 3) are used for each basic positioning, and those of the dynamic level are automatically set to the basic level.

FIG. 3 shows an example of an automatic level adjusting circuit on the input (receiving) side. R2 (resistor 2), R4 (resistor 4), R5 (resistor 5), C2 (capacitor 2), Q
(Amplifier circuit) including the (transistor), amplifies the amount of attenuation of the input of the EP (earpiece), and outputs the same level as the line level (telephone line level) to the M (computer terminal) output circuit.

[0010]

The connection adapter of the present invention can be operated by connecting a computer to the modular jack of a business telephone provided in an office or the like by connecting the adapter. That is, it is possible to easily perform Internet and personal computer communication without having to lay one telephone line dedicated to computer communication. And since this adapter does not require any setting work such as level adjustment, even a novice computer can use it easily, enabling connection to the Internet that was not possible before. The adapter is simple and inexpensive, and can be owned by an individual. This connection adapter can be used not only in an office, but also in a facility having a 6-pole 4-core specification extension exchange such as a home telephone.

[Brief description of the drawings]

FIG. 1 shows a case where a computer and a business telephone are connected by the connection adapter of the present invention.

FIG. 2 is a block diagram on the transmission side of a connection adapter.

FIG. 3 is a block diagram on the receiving side of the connection adapter.

[Explanation of symbols]

 1 desk 2 computer 3 business telephone 4 receiver 5 connection adapter 6 modular jack 7 modular cord 8 modular plug 9 modular plug

Claims (1)

[Claims] 1. An adapter used for exchanging information or communicating with a personal computer using a computer (including a modem) by connecting to a telephone code of a business telephone installed in an office or the like. A business telephone connection adapter for a computer, comprising a circuit for automatically stabilizing input / output level amplification or attenuation caused by a difference in specifications of a handset unit element at a telephone line level.