JP3135322U - Conference speakerphone connection adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection adapter capable of using a conference conference speakerphone designed for an analog line at a business office where a business phone is installed.
A connection connector for connecting to a microphone input terminal and a speaker output terminal of a conference speakerphone, and a line for connecting to a receiver jack of a business phone handset or a voice input / output jack of a personal computer. And a switching device for switching the connection relationship between the connection connector and the line connector.
[Selection] Figure 2

Description

  The present invention relates to an adapter for line connection used for a telephone conference phone for performing a conference via a communication line such as a telephone line or the Internet.

  Nowadays, it is not technically unusual to conduct a so-called conference call through a communication line. However, in order to conduct a conference call, it is usually necessary to draw a dedicated line, and it is necessary to install an expensive digital private branch exchange that can perform complicated signal processing. (For example, refer to Patent Document 1).

  As means for overcoming such a situation, a conference conference speakerphone for performing a conference call using a general-purpose communication line has been proposed (see Non-Patent Document 1, for example). This conference conference speakerphone is used for a so-called analog communication line that is used by connecting to an analog communication line (including a case where it is connected to a digital communication line via a modem or a terminal adapter as in an ISDN line). It is prepared.

  On the other hand, small-scale private branch exchanges that can use multifunction telephones (hereinafter referred to as “business phones”) have become widespread as private branch exchanges for small offices. This business phone is composed of a main device and a child device, and control signals other than audio signals are also transmitted and received between the main device and the child device in order to realize multiple functions. In addition, the handset and the handset of the handset are connected by a total of four conductors for transmitting, receiving, grounding for transmitting, and grounding for receiving. The connector connection position of the lead wire differs depending on each company or each model.

For this reason, in order to use a conference call speakerphone in an office where a business phone is installed, it is necessary to prepare a separate analog communication line, which is a major factor that hinders the introduction of the conference call system. .
JP 2001-203815 A Matsushita Electric homepage “meeting phone” URL: http://panasonic.biz/netsys/speakerphone/index.html

  The present invention seeks to provide a connection adapter that can use a conference conference speakerphone designed for an analog line at a business office where a business phone is installed.

  The present invention can also cope with the difference in the connection terminal position of the line in each conference call speakerphone, and can control the volume of transmission and reception that may be caused by the difference in input / output impedance etc. in each conference call speakerphone. It is intended to provide a connection adapter that can be adjusted.

  The connection adapter according to the present invention includes a conference phone for an analog telephone line having an external microphone input terminal for inputting an audio analog signal and an external speaker output terminal for outputting an audio analog signal. It is an adapter for connecting to the local line. And a connector for connecting to the microphone input terminal and speaker output terminal of the speakerphone for conference call, and a line for connecting to the receiver jack of the handset of the business phone or the voice input / output jack of the personal computer And a switching device for switching a connection relationship between the connection connector and the line connector.

  In the connection adapter according to the present invention, a pair of amplifiers / attenuators for independently amplifying or attenuating an input signal and an output signal may be interposed between the connector for connection and the switching device. Further, when the pair of amplifying / attenuating devices is not used, the switching device can be provided with a bypass switch for bypassing and connecting the amplifying / attenuating devices. Furthermore, a dip switch can be used as the switching device.

  According to the present invention, since the handset jack provided in the handset of the business phone handset that receives and outputs analog signals is used as the input / output terminal of the line, the conference call speakerphone for the analog telephone line is used as the business phone. It can be used at the office where it is installed, and it uses an IP telephone line that applies P2P technology, such as Skype (trademark), by using the voice input / output jack of a personal computer as the input / output terminal for the line. Enable teleconferences.

  As shown in FIG. 1, a connection adapter 1 for a conference conference speakerphone according to an embodiment of the present invention replaces a commercially available conference conference speakerphone 2 designed and manufactured for an analog line with a multi-function telephone. Is connected to an external telephone line or a private line constituted by a business phone via a handset 3 connected to a main device (not shown) of the business phone that can use the telephone.

  As shown in FIG. 2, the configuration of the connection adapter 1 according to the embodiment of the present invention uses an additional microphone input terminal and speaker output terminal (in the case shown, a 3P connector) provided in the conference conference speakerphone 2. Therefore, it is prepared as one additional terminal 21.) Inserted into the connector 11 for connection by inserting into the terminal 21 and the receiver jack 32 for connecting the receiver 31 provided in the handset 3. And a switching device 13 interposed between the connection connector 11 and the line connector 12.

  In the illustrated case, a 3P plug is used as the connector 11 for connection, and a terminal P11 connected to the tip portion 111 at the tip of the plug and a terminal connected to the ring portion 112 disposed adjacent to the tip portion 111. P12 and a terminal P13 connected to a sleeve portion 113 disposed adjacent to the ring portion 112. In the description of the present invention, in order to avoid misunderstandings due to complications, a description will be given of a case where the terminal P11 is used as a microphone input terminal, the terminal P12 is a speaker output terminal, and the terminal P13 is used as a common ground. To do. Here, as is appropriate, the connection connector 11 is prepared separately for the microphone input terminal and the speaker output terminal according to the conference conference speakerphone 2 to be connected, or a conversion adapter ( It is also possible to branch using (not shown).

  Since the line connector 12 generally uses a 4P modular jack as the handset jack 32 of the handset 3, a case where a 4P modular plug is used will be described in the description of the present invention. The terminals P31 to P34 of the receiver jack 32 respectively corresponding to the terminals P21 to P24 of the line connector 12 depend on the type of business phone to be connected, as illustrated in FIGS. 3 (A) to (C). The connection destination is different. For example, in the case of a business phone made by Matsushita Electric, as shown in FIG. 3A, a terminal P31 is for a transmission signal (for audio signal input) (T), and a terminal P32 is for a reception signal (for audio signal output). ) Terminal (R), terminal P33 is a reception signal ground terminal (RG), and terminal P34 is a transmission signal ground terminal (TG), whereas in a conference call speakerphone manufactured by NEC, FIG. As shown in FIG. 3B, terminals P31: TG, terminals P32: RG, terminals P33: R, terminals P34: T, and a conference call speakerphone made by Cisco is shown in FIG. As shown, the connection relationship varies depending on the business phone used, such as terminal P31: RG, terminal P32: TG, terminal P33: T, and terminal P34: R. For this reason, in the connection adapter 1 of the present invention, the switching device 13 causes the terminal P11 (microphone input terminal) of the connection connector 11 to be the received signal (audio signal output) terminal (R) of the line connector 12. , Terminal P12 (speaker output terminal) is a transmission signal (voice signal input) terminal (T), and terminal P13 (common ground) is a reception signal ground terminal (RG) and transmission signal ground terminal ( By switching so as to be respectively connected to TG), different connection relationships are matched.

  The switching device 13 includes a dip switch 131 in order to perform a switching operation for matching easily and reliably. The dip switch 131 is provided for adjusting the connection volume between the terminals P11 to P13 of the connection connector 11 and the terminals P21 to P24 of the line connector 12, and for adjusting the reception volume. In addition, a switch for turning on / off the attenuator 132 is provided.

  The connection between the contact points of the switch used for matching the connection relationship is wired in any way as long as the connection relationship between the connection connector 11 and the line connector 12 can be switched to a required relationship. However, explanation of the details is omitted, but as an example, it can be handled by wiring as shown.

  The connection adapter 1 for a conference call speakerphone of the present invention configured as described above connects the connection connector 11 to the extension terminal 21 of the call conference speakerphone 2 and connects the line connector 12 to the business phone. To the handset jack 32 of the handset 3. On the other hand, the connection relationship between the connection connector 11 and the line connector 12 determined by the type of the conference conference speakerphone and business phone to be used is turned on / off. Match by switching to and setting. If necessary, the attenuator switch is turned on / off to adjust the reception volume.

  Thus, the speaker output signal and the microphone input signal, which are analog signals input / output from the extension terminal 21 of the conference call speakerphone 2, are connected to the desired destination using the handset 3 of the business phone, and used for transmission. By inputting / outputting signals and receiving signals from the handset jack 32 of the handset 3 of the business phone, even in a business office where a business phone is installed, an analog line can be used without newly drawing an analog line. A conference call can be performed using a conference phone.

  FIG. 4 shows a connection adapter 1 according to another embodiment of the present invention, except that amplifiers 133 and 134 are provided in place of the reception volume adjustment attenuator 132 of the switching device 13 described in the embodiment. The configuration is the same as in the previous embodiment. In order to avoid redundancy, the description of the same configuration as in the above embodiment is omitted.

  Two sets of amplifiers, which are features in the present embodiment, are prepared. One amplifier 133 is for the terminal P11 (microphone input terminal) of the connector for connection 11 and for the reception signal (for audio signal output) of the line connector 12. ) Terminal (R), the other amplifier 134 is interposed between terminal P12 (speaker output terminal) and transmission signal (voice signal input) terminal (T). They are arranged so that the volume and the transmission volume can be adjusted independently. The operation of each of the amplifiers 133 and 134 is controlled by turning on / off an amplifier control switch prepared in the dip switch 131, as in the case of the attenuator 132 in the above embodiment. The amplifiers 133 and 134 have volumes R1 and R2 for adjusting the amount of amplification, and adjust the volume as necessary.

  By preparing amplifiers 133 and 134 for receiving and transmitting, respectively, it becomes possible to correspond to different input / output signal standards depending on the type of speakerphone for conference call and business phone. It is possible to avoid the occurrence of a phenomenon such as the inability to hear the story or the fact that this story does not reach the other party due to the lack of the transmission volume. Here, if necessary, an attenuator for attenuating the volume may be provided, and a switch for switching the polarity may be added to the dip switch 131.

  By connecting to the voice input / output terminal of the personal computer instead of the business phone handset 3, it is possible to apply the P2P technology and use the IP telephone line to conduct a conference call. In this case, the line connector 12 is configured to be connected to a microphone input jack and a speaker output jack of a personal computer to be used.

FIG. 5 is a schematic diagram for explaining a usage state of a connection adapter for a conference conference speakerphone according to an embodiment of the present invention; 1 is a schematic diagram illustrating a configuration of a connection adapter for a conference conference speakerphone according to an embodiment of the present invention; FIG. It is a figure for demonstrating the connection relation of the terminal of the jack for receivers. FIG. 3 is a view similar to FIG. 2 showing a configuration of a connection adapter for a conference conference speakerphone according to another embodiment of the present invention;

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connection adapter 2 Telephone conference speakerphone 3 Slave device (Business phone) 11 Connection connector 12 Line connector 13 Switching device 21 Extension terminal 31 Handset 32 Handset jack 111 Chip portion 112 Ring portion 113 Sleeve portion 132 Attenuator 133 , 134 Amplifiers P11 to P13 (connector connector) terminals P21 to P24 (line connector) terminals P31 to P34 (receiver jack) terminals R1, R2 (volume control) volume R for received signal (audio signal output) ) Terminal RG Receive signal ground terminal T Transmit signal (voice signal input) terminal TG Transmit signal ground terminal

Claims (4)

For connecting a conference phone speakerphone for an analog telephone line having an external microphone input terminal for inputting an audio analog signal and an external speaker output terminal for outputting an audio analog signal to a private line of a business phone An adapter,
A connector for connecting to the microphone input terminal and the speaker output terminal of the conference speakerphone, a line connector for connecting to the receiver jack of the handset of the handset of the business phone or the voice input / output jack of the personal computer, A connection adapter comprising a switching device for switching a connection relationship between the connection connector and the line connector.   2. The connection adapter according to claim 1, wherein a pair of amplifiers / attenuators for amplifying or attenuating an input signal and an output signal independently are interposed between the connection connector and the switching device.   The connection adapter according to claim 2, wherein the switching device includes a bypass switch for bypassing and connecting the amplifier / attenuator when a pair of amplifier / attenuators is not used.   The connection adapter according to claim 1, wherein the switching device is a dip switch.

Images