JPS6315592A - Transmission system for extension telephone - Google Patents

Abstract

PURPOSE:To elevate the efficiency of a work such as a business management by counting a prescribed dialing from a caller extension telephone set during a call from the caller extension telephone set to a callee extension telephone set, and storing the state of the result of a dialing in a memory, in the system for an extension telephone at a PBX. CONSTITUTION:When an extension telephone TELA1 transmits and calls a TELB2, on the off-hook of the TELA1, a CPU11 decides to be the call of the TELA1 and connects a transmitting register trunk ORT7 and a transmitting trunk DT8 to a channel switch SW5. When a dial tone from the DT8 is recognized at the TELA1, the extension number of the TELB2 is dialed. Here, if a previously decided special number is dialed from the TELA1, the CPU11 receives the number information of this special number, and sets a flag which shows that the TELA1 is calling the TELB2, to the memory MEM12. Thereupon, the operator of the TELA1 is temporarily released from the TELA1. Consequently, the operator can use effectively a time he is released from.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of use in sedentary work] The present invention relates to an internal door transmission system in a private branch exchange (hereinafter referred to as rPBXJ).

r Conventionally, in a PBX, when a general extension phone is used to make a call from another phone, the operator of the caller's extension phone must call the entire extension number of the caller's extension phone. After dialing, you had to keep the handset in your hand and wait for a response from the person operating the extension.

If the caller does not answer, the caller's extension phone operator wastes time waiting for the caller's extension phone operator to answer, reducing the efficiency of the original work such as administrative processing. It has the disadvantage of being stored away.

[Means to solve all problems]

The present invention provides, in an extension calling system in a PBX, a means for counting this calling internal H' by seven predetermined dials from a filling machine while the calling extension telephone is ringing the called extension telephone, and the state of the result of this dialing. It has a memory to store gold.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a relay system diagram of one embodiment of the present invention, and FIGS. 2 to 6 show the state of operation of the actual example shown in FIG. 1. FIG.

In FIG. 1, there is an extension telephone A (hereinafter referred to as AJ).

) 1 and extension telephone B (hereinafter referred to as BJ) 2 are subscriber line #! It is connected to the input side of a communication path switch (hereinafter referred to as ``SWJ'') 50 via r (hereinafter referred to as ``LC'') 3.4. Internal intercommunication trunk (hereinafter referred to as rIOTJ) 6, Outgoing register trunk (hereinafter referred to as rORTJ) 7, Dial tone trunk (hereinafter referred to as rDTJ)
8. A ring trunk (hereinafter referred to as rRBTJ) 9 and a ring signal trunk (hereinafter referred to as rRGTJ) 10 are SWs.
Connected to the output side of S. In addition, the central processing unit (hereinafter referred to as rc)
It's called PUJ. ) 11 has a memory (hereinafter referred to as "MEMJ") 12, which controls the SWS LCs 3 and 4 and monitors their status.

Next, with reference to all of FIGS. 2 to 6, a case in which a call is made from station AI to station 82 will be explained. First, in FIG. 2, when the station AI goes off-hook, the CPU 11, which monitors the status of the LC3, determines that the station AI is calling, and
Connect all 0RT7 and DT8 to WS. Set AI to L
) When the tone from T8 is confirmed, the extension number at B2 is dialed. When the CPU 11 receives the extension number information from the HORT 7, the SWS connection is performed as shown in FIG. That is, 0RT7 and RBT9 are placed in location A1.
and connect all riRGTs 10 to B2. When a predetermined special number is dialed from the machine AI, the number information of this special number is received from the CPU 11UORT7, and the machine AI sets all flags to the MEM 12 indicating that the machine 82 is being called.

In this case, station A1 goes off-hook after dialing, but station B2 is still receiving a ring tone. This state is as shown in FIG. At this time, the person handling the location AI is temporarily released from the location AI. Next, in Figure 5, B2 is off-hook and conversely calls back to Total 1 at? show.

If an outgoing signal is not received or an off-footer is detected via l0T6: rLn, the state immediately changes to the state shown in Figure 6, etc. There is nothing that restricts all functions of conventional PBX internal intercom calls. Needless to say, O [Effects of the Invention] As explained above, one aspect of the present invention is that, in a PBX, when the calling extension telephone is receiving a call from the calling extension telephone, the calling extension telephone By simply dialing a special number, the caller can release the calling extension from the extension until the number goes off footer. By making the most of all the time available, and improving the original work efficiency of the person handling the work, seven things can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a relay system diagram of an embodiment of the present invention, and FIGS. 2 to 6 are diagrams for explaining state transitions of the operation of the present embodiment of FIG. 1. 1.2...Extension telephone, 3,4...Subscriber circuit, 5...Call path switch, 6...
・・Extension mutual call trunk % 7・・・・Call register trunk, 8・・・・Dial tone trunk, 9・・・・
...Ring trunk, 10...Ring signal trunk, 11...Central processing unit% 12...
···memory. 1\Representative Patent Attorney Shinj. Figure 3 Immersion Figure 4

Claims (1)

[Claims] In an internal door origination system in a private branch exchange, when the called extension telephone is receiving a call from the calling extension telephone, a means for counting a predetermined number of dials from the calling extension telephone; An extension dialing system characterized by comprising a memory for storing information that a predetermined dial has been made from a telephone.