JPS61112466A - Method of uniting attendant board - Google Patents

Abstract

PURPOSE:To enable an extension contained in an exchange having no board to receive connection that requires board operation when plural private branch exchanges are united by connecting exchanges having board and exchanges having no board through a talking trunk. CONSTITUTION:Supposing that an extension (TEL) 2 called an attendant board (ATT) and after receiving a reply from the ATT requested trunk line outgoing, an operator catches the trunk line and tries to call a third person in the trunk line side. When the third person is busy or so, the operator tries to make the TEL 2 wait putting down a receiver. At this time, the operater depresses an extension blocking key. This information is transmitted to an exchange EX2 through trunks TRK2, TRK3 of an exchange EX1. On receiving the blocking signal, the exchange EX2 stops switching detection of the TEL2.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention provides a method for merging a plurality of private branch exchanges into one large-capacity exchange, using a single central office line relay for all false internal branch exchanges. The present invention also relates to a method of merging central office line relay boards for use in combination with switching equipment.

[Background of the invention]

There are cases where multiple premises exchanges are combined and used in one back office. In this case, the central branch relay board is connected to one private branch exchange and used from all the private branch exchanges, but with this conventional system, the
As stated in No. 8, there was no function to transmit telephone key operations from the relay board to exchanges that do not accommodate central line relay stations. The drawback was that it was not possible to provide services that required

[Purpose of the invention]

An object of the present invention is to eliminate the need to operate the central office line relay board even for extensions housed in a stand-alone exchange that does not have a central office line relay board, in a private branch exchange network in which central office line relay boards are shared. It is an object of the present invention to provide a method for merging station operating relay boards that enables exchange connections to be made.

[Summary of the invention]

When controlling extension lines accommodated in an unused exchange from a shared central office line relay board, the operator transmits operation signals from the central office line relay stand to the uninstalled switch via a call trunk. The system is characterized in that the signal is transmitted, the spoiler interceptor receives this signal, and in accordance with the received signal, the extension line to be controlled is controlled from the office line relay stand.

[Embodiments of the invention]

An embodiment of the present invention will be described below using a central office line request originating connection as an example. Figure 1 shows the configuration of a typical private branch exchange network that shares a central office line relay board, where EX1 is a switch with a central office relay board ATT, and EX2 is an unused switch that does not have a central office relay board ATT. . Place L and place 2 are each exchanger EX
I is an extension accommodated in g
2. TRK3 is accommodated in exchanges EXI and EX2, respectively, and is a call trunk connecting exchanges EX1 and h2X2.Prior to a detailed explanation of the present invention, a connection by central line request origination without pre-blocking an extension line will be explained. When a call is made from station 2 and a call is made to the central office relay stand A T T K ffi, the exchange gXz captures the trunk TRK3, activates the exchange EX1, and sends a call to the central office line relay stand A'r'rK.
Dial-up to send a message. The exchange BXI receives this dial, displays the incoming call on the central office line relay stand ATT, and waits for a response from the central office line relay stand ATT. Office line relay stand ATT
When there is a response, the exchange EX1 connects extensions TEI and 2 to the central office line relay stand ATT, and then the exchange of the relay stand ATT listens to the request from internal equipment 2 and connects the relay stand ATT to call the central office line. Manipulate.

Then, exchange EXt captures trunk TRKt,
Sends a ringtone. When the central office line responds to this, the exchange connects the trunk TRKI and the extension TE 142, thereby completing the requested origination connection.

As described above, when the extension is not pre-blocked, there is no need to operate the extension from the relay stand, but the method of the present invention is effective when a request to pre-block is sent.

That is, the process from the time when the internal device 2 first makes a call until the central office line relay stand ATT responds is exactly the same as the above explanation. Attendant stand ATT
After the response, the operator seizes the central office line according to the request from internal device 2 and attempts to call a third party on the central line, but if the third party is busy, internal device 2 He tries to make me hang up the phone and wait. At this time, the extension pre-blocking function of the present invention becomes effective. That is, the switchboard operator selects the extension pre-closing power supply 1sllKE in 'ILm of the relay stand ATT shown in FIG.
Press Y1. When KEYl is pressed, exchange BXI senses this and sends a pre-blocking signal to exchange EX2 via trunk TRK2, and also lights up the extension pre-blocking lamp among the lamps on relay board ATT. Exchange gX2
However, when receiving the pre-blockage signal in trunk T3, it stops detecting disconnection of internal device 2 connected to trunk TRK2. Next, when the operator calls the pre-blocked extension TgL2 again, the extension recall telephone key KEY2 of the relay stand ATT
When you press the key, the exchanger EXI detects this and releases the telephone key KFi.
Similarly to Y1, a recall signal is sent to exchange EX2 via trunk T2.

When the exchange EX2 receives a recall signal on the trunk TRK3, the internal equipment connected to the trunk T)l,
2, an incoming call signal is sent from an incoming call signal device (not shown), and internal@TWL2 is called. At this time, when internal equipment 2 responds, exchange EX2 connects extension TBL2 and trunk TR/K.
2, and thereby the relay stand ATT and the internal device 2 are connected. Further, when the internal device 2 is to be released from the pre-blocked state, the operator presses the pre-block release key KEY3 in the office line relay stand AT'I'. Then,
The exchange EXI senses this and, like the electric key KEY2,
A pre-blockage release signal is sent to exchange E via trunk TRK2.
Send to X2. When the exchange EX2 receives the pre-block release signal from the trunk TRK3, it starts monitoring the disconnection of the extension TBL2 connected to the trunk TRK2, and if the internal device 2 has hung up the phone at that time, the telephone is disconnected.

Trunk T) (, 2 and TRK3 in the above connection
Figure 3 shows the sequence of signal transmission and reception. Also, the third
The signal format and signal type are shown in FIG. 4. In FIG. 3, signal SG1 is transmitted from trunk TkK3 to trunk TRK.
This is a dial signal for receiving a call from the relay console to be sent to No. 2.

Signals 3G2, SG3, and SG4 are each connected to trunk T.
1(, 2 to 2 to trunk TI(, 3) are a pre-blocking signal, a recall signal, and a pre-blocking release signal. In FIG. 4, the signal SGI is a dial pulse, and the signal SG2, SG3.

8G4 indicates an on-A-] control signal with a wide pulse width.However, these signal formats and types, or the telephone keys and lamps on the relay stand, may have equivalent functions even if they are not shown above. Anything you have is fine.

〔Effect of the invention〕

As is clear from the above embodiments, according to the present invention, in a local exchange network in which a central office line relay board is shared, exchange connections that require operation of the central office line relay stand even for extensions of a damaged exchange are possible. Therefore, the switchboard operator can operate without distinguishing between the extensions in the switchboard equipped with the switchboard and the extensions in the switchboard without the switchboard.Furthermore, the operator can hang up the telephone receiver on the extension line in the switchboard without the switchboard and wait for the caller to call the requested party. There are effects such as being able to.

[Brief explanation of drawings]

Figure 1 is a configuration diagram of a private branch exchange network in which central office line relay boards are shared, Figure 2 is a board diagram of central office line relay boards, Figure 3 is a signal sequence diagram between exchanges, and Figure 4 is the same as that shown in Figure 3. FIG. 3 is a diagram showing an example of the signal format and signal type of each signal. EXI, EX2...Exchange Tl (, 1. ...ilt key LM
P... Lamp SGI, 802, SG3, SG4... Signal No.
1 Figure %2 No. 312I

Claims (1)

[Scope of Claims] 1. A method for merging central branch exchanges in a private branch exchange network consisting of one exchange equipped with a central branch and one or more unused exchanges without a central branch. When a central office line relay board operates an extension of a disabled exchange, the telephone key operation contents of the central office line relay board are converted into signal information, and the signal information is transferred to the central office switch and the above-mentioned extension. The message is transmitted to the ruined exchange via the call trunk connected to the ruined exchange, and the ruined exchange receives this signal information and performs an exchange connection operation corresponding to the telephone key operation of the office line trunk. The contents of the call status, response disconnection operation, etc., and status changes related to the own exchange and the extensions accommodated in the own exchange are converted into signal information, and transmitted to the switchboard equipped with a machine via the above-mentioned call trunk, and the switchboard with a switchboard converts it into signal information. A method for merging station line relay stations, characterized in that the signal information is received and displayed on the station line relay station. 2. The signal information sent and received in the call trunk between the installed exchange and the uninstalled exchange is selection signals such as dial pulses and multi-frequency signal tones sent and received between the exchanges, or connection control signals other than the above selection signals. A method for merging central office line relay boards according to claim 1, characterized in that: