JP2011029801A - Telephone main device having two or more communication protocol versions and extension telephone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To confirm a protocol version to perform communication, when a button telephone main device mixedly houses a new communication protocol extension terminal and an old communication protocol extension terminal, to perform mutual communication. <P>SOLUTION: When it is detected that an extension telephone is connected, a first response request command for requesting predetermined response is transmitted to a corresponding extension by using an extension communication protocol having the oldest release date; when the predetermined response corresponding to the first response request command is received, a second response request command for requesting a predetermined response to the extension by using an extension communication protocol having a release date newer than that of the version; and when a predetermined response corresponding to the second response request command is not received, the extension communication protocol of the extension is determined to be a first version. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a key telephone apparatus which can accommodate a main apparatus or extension terminal of an old communication protocol and a main apparatus or extension terminal of a new communication protocol in a key telephone main apparatus and enable mutual communication.

In general, a telephone main unit or extension terminal (referred to as a main unit or the like) operating with a new communication protocol can also operate with an old communication protocol in order to enable mutual communication with a main unit or the like operating with an old communication protocol. Designed to be Therefore, if the old and new versions of the communication protocol of the connection partner can be discriminated prior to the start of communication, mutual communication is possible even if the versions are different.

However, some main devices of the old communication protocol do not have a function for discriminating between the old and new versions prior to the start of communication. When connected to the main device of the new communication protocol, etc. A response cannot be returned to an inquiry command in the protocol. For this reason, the main device or the like of the new communication protocol has the inconvenience that communication cannot be performed because the new or old protocol of the counterpart device cannot be confirmed although the operation can be performed using the old communication protocol.

In order to solve this problem, for example, in a mutual connection between a G4 facsimile apparatus and a G3 facsimile apparatus, a method is known in which an inquiry is first made in the G4 facsimile apparatus using the G4 protocol, and if there is no response, a communication is performed thereafter using the G3 protocol. This is called a fallback function. (Patent Document 1).

In this way, it is conceivable to try the first connection with the new communication protocol and use the fallback method to the old protocol when there is no response, but in extreme cases, the signal format of the inquiry command for the new communication protocol Is received, the signal format received by the extension telephone of the old communication protocol is out of regulation, so that it may malfunction and become unusable (Patent Document 2). Therefore, in such a case, the fallback function does not work effectively, and it is determined whether the extension telephone is an old communication protocol or a completely different communication protocol, for example, an extension telephone made by another company. There was a problem that could not.
JP-A-6-178011 JP2008-154087

The present invention has been made in view of such a problem, and is a telephone main device capable of accommodating a plurality of extension telephones having different extension communication protocol versions via extensions,
Connection detecting means for detecting whether or not an extension telephone is connected to the extension;
Extension communication means for performing extension communication using a predetermined version of the extension communication protocol corresponding to the version of the extension communication protocol of the extension telephone;
Extension telephone communication protocol version storage means for storing the extension communication protocol version in association with the extension ID;
And when the connection detecting means detects that the extension telephone is connected, a first response requesting a predetermined response by the extension communication protocol of the first version having the oldest release date or the lowest function is provided. If a response request command is sent to the extension and a predetermined response corresponding to the first response request command is received, the extension communication of the second version with a newer release date or higher function than the first version. If a second response request command requesting a predetermined response according to the protocol is sent to the extension and a predetermined response corresponding to the second response request command is not received, the extension communication protocol of the extension is the first The extension is stored in the extension telephone communication protocol version storage means.

In the present invention, a telephone main device (referred to as a new telephone main device) that operates with a new communication protocol starts version confirmation from the old communication protocol, and is an extension telephone (referred to as an old extension telephone) that operates with the old communication protocol. Sends an inquiry command in the old communication protocol. Therefore, the old extension telephone does not receive a command with a signal format that is not specified, and the subsequent extension telephone does not become inoperable due to a malfunction. In addition, an inquiry command in the old communication protocol is first sent to an extension telephone (new extension telephone) that operates with the new communication protocol, but the new extension telephone can also operate with the old communication protocol as described above. Since it is designed in such a manner, a response in the old communication protocol can be returned and no malfunction occurs.

Next, the new telephone device proceeds to check the version using the new communication protocol, and since the new extension telephone returns a legitimate response, it can be confirmed that it is the new version, but the old extension telephone does not return a response. It can be confirmed that it is an old version.
In this case, even if the old extension telephone receives an unspecified signal format and becomes inoperable, it is determined that the old version is correct because there is no response, and the result is the extension telephone communication protocol version storage means. Is remembered. Therefore, since the new telephone main device can correctly know the old and new versions of the extension telephone by referring to the extension telephone communication protocol version storage means prior to the start of communication in subsequent connections, there is no problem in mutual communication. There is an effect that it is done.

Hereinafter, the best embodiment for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of a new telephone main apparatus and old and new extension telephones according to the present invention.
The new telephone main device 100 of the present invention includes an interface unit 110 with the subscriber telephone network 400, a telephone call control unit 120, an interface unit 130 with the old extension telephone 200 and the new extension telephone 300, and an extension telephone protocol version storage unit 140. Each block is included as a component.

  The old extension telephone 200 controls the interface unit 210 with the new telephone main device 100, the first protocol compatible terminal control unit 220 for controlling the terminal based on the first communication protocol which is the old communication protocol, and the telephone function. Each block of the telephone control unit 230 is included as a component.

  Further, the new extension telephone 300 includes the interface unit 310 with the new telephone main device 100, the first and second protocol compatible terminal control units 320 corresponding to the old and new communication protocols, and the telephone control unit 330 as constituent elements. .

FIG. 2 shows a communication protocol version determination flowchart of new and old extension telephones connected by the new telephone main apparatus 100 of the present invention.

  When the power is turned on (S1001), the call control unit 120 of the new telephone main device 100 constantly monitors whether the extension telephone is connected due to the construction (S1002). When a connection is detected (Y in S1002), a response request command is immediately transmitted using the first communication protocol (S1003). Then, a timer for monitoring reception of the response of the first communication protocol is started (S1004), and whether there is a response from the extension telephone in response to the command of the first communication protocol is monitored (S1005, S1012). When a response of the first communication protocol is received (Y of S1005), a response request command of the second communication protocol is transmitted (S1006).

  Then, a timer for monitoring the reception of the response of the second communication protocol is started (S1007), and when the response of the second communication protocol is received in response to the command of the second communication protocol (Y of S1008), the connected extension The telephone is stored in the extension telephone communication protocol version storage unit 140 as a new extension telephone (S1009).

If the response of the response request command of the first communication protocol is not received within a certain time (Y in S1012), an alarm is issued because there is a high possibility that it is not a predetermined extension telephone, and construction is performed. The person is notified (S1013).

  In this way, when an extension telephone of a completely different protocol, for example, an extension telephone made by another company, is mistakenly connected, a normal response is not returned in the version check using the first communication protocol. There is also an effect that it is possible to identify that an unsupported extension telephone is connected on the 100 side, and to promptly issue an alarm.

  If the response of the second communication protocol response request command is not received within a predetermined time (Y in S1010), the extension telephone communication protocol is set so that the connected extension telephone is the old extension telephone. Store in the version storage unit 140 (S1011).

  FIG. 3 shows a communication protocol version determination flowchart of the telephone main apparatus connected by the new extension telephone of the present invention.

When the power is turned on (S2001), a timer for monitoring reception of a command of the first communication protocol is started (S2002), and reception of a response request command by the first communication protocol is further monitored (S2003).

When a response request command for the first communication protocol is received (Y in S2003), a response conforming to the first communication protocol is returned (S2004), and a timer for monitoring the reception of the second communication protocol command is started (S2005). ) Then, the reception of the response request command of the second communication protocol is monitored (S2006).

When a response request command for the second communication protocol is received (Y in S2006), a response defined by the second communication protocol is returned (S2007), and it is determined that it is connected to the new telephone main apparatus 100, and Terminal setting corresponding to the telephone main device is performed (S2008).

When the response request of the second communication protocol is not received even after a predetermined time (Y in S2006 and S2009), it is determined that it is connected to the old telephone main device, and the terminal setting corresponding to the old telephone main device is performed for itself ( S2010).

If the first response request command of the first communication protocol cannot be received within a certain time (Y in S2003S2012), it is not connected to the telephone main apparatus or a telephone main apparatus failure is considered. An alarm is displayed (S2013), and the maintenance staff is notified.

The present invention has been described above with respect to the relationship between the telephone main unit and the extension telephone. However, the present invention is not limited to this. For example, in a communication network in which a plurality of versions of communication protocol terminals coexist, it is widely used as a communication protocol version determination method. It is added that it can be applied.

It is a block block diagram of the new telephone main apparatus 100 and the old and new extension telephones of this invention It is the communication protocol version determination flowchart of the extension telephone by the new telephone main apparatus 100 of this invention. It is a communication protocol version determination flowchart of the main telephone corresponding to the new extension telephone of the present invention.

100 New telephone main apparatus 110 according to the present invention External line interface section 120 Call control section 130 Extension interface section 140 Extension telephone communication protocol version storage section 200 Old extension telephone 210 Telephone main apparatus interface section 220 First protocol compatible terminal control section 230 Telephone control section 300 New extension telephone 310 Telephone main unit interface section 320 First and second protocol compatible terminal control section 330 Telephone control section 400 Subscribed telephone network

Claims (2)

A telephone main device capable of accommodating a plurality of extension telephones having different extension communication protocol versions via an extension,
Connection detecting means for detecting whether or not an extension telephone is connected to the extension;
Extension communication means for performing extension communication using a predetermined version of the extension communication protocol corresponding to the version of the extension communication protocol of the extension telephone;
Extension communication protocol version storage means for storing the extension communication protocol version in association with the extension ID;
And when the connection detecting means detects that the extension telephone is connected, a first response requesting a predetermined response by the extension communication protocol of the first version having the oldest release date or the lowest function is provided. If a response request command is sent to the extension and a predetermined response corresponding to the first response request command is received, the extension communication of the second version with a newer release date or higher function than the first version. If a second response request command requesting a predetermined response according to the protocol is sent to the extension and a predetermined response corresponding to the second response request command is not received, the extension communication protocol of the extension is the first A plurality of extension communication protocol versions, wherein the extension communication protocol version storage means stores the version information in the extension communication protocol version storage means. Telephone main apparatus to be.
An extension telephone connected to the telephone main unit via an extension, and an extension communication means using an extension communication protocol of a plurality of versions;
First response request command receiving means for receiving a first response request command for requesting a predetermined response from the main apparatus by a first version of the extension communication protocol;
Second response request command receiving means for receiving a second response request command for requesting a predetermined response from the main apparatus by a second version of the extension communication protocol,
When the first response request command receiving means receives the first response request command, the first response request command receiving means sends a predetermined response to the extension by the extension communication protocol of the first version, and the second response request command receiving means If the second response request command is not received even if a predetermined time has elapsed, the extension communication means uses the first version of the extension communication protocol to determine whether the telephone master An extension telephone, wherein the extension telephone is set so as to communicate with the apparatus.