JPS6012851A - Method for recalling non-response extension - Google Patents

Abstract

PURPOSE:To omit labor requesting an answering subscriber to a transfer call to transmit a message or calling a terminating subscriber repeatedly by repeating recall to a non-response extension automatically with a fixed interval by dialing a specific number. CONSTITUTION:If a called subscriber 1B is absent when a calling subscriber 1A dials the extension subscriber's number of the called subscriber 1B, the terminating signal is automatically connected to a station 1C to be transferred. After hearing an originating tone from an originating register 4, a transferred subscriber 1C dials a specific number. A specific number specifying device 5 specifies the specific number and sends the specific number to a central control device 10. The device 10 monitors the time-out of a call signal timer circuit 61 on the basis of the receiving information and connection progress information stored in a connection progress memory 8, and when detecting the time-out, starts a call signal device 9 and to send a call signal to the called subscriber 1B. The sending of the call signal to the called subscriber 1B is repeated with the fixed time interval until a response from the called subscriber 1B is received.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an unanswered extension recall system and relates to an unanswered extension recall system in an automatic private branch exchange having a 5% automatic unanswered transfer function.

Conventionally, in automatic private branch exchanges (hereinafter referred to as PABXs) that have a self-excited no-answer forwarding function, when a ruru extension subscriber (called party) registers no-answer forwarding in the PABX in order to make the callee absent, etc., this extension subscriber If an incoming call is not answered for a certain period of time, the incoming call is automatically transferred to another extension. Therefore, if the caller wants to talk directly to the called party, he or she must either send a message to the transferred extension subscriber asking the called party to call him back, or repeat the call several times until the intended called party answers. The disadvantage of this method is that it requires a lot of effort, as it requires calling back.

It is an object of the present invention to eliminate the above-mentioned drawbacks by dialing a special number when an extension subscriber answers a call transferred according to the automatic no-answer forwarding function, and to automatically re-ring an unanswered called party. It is an object of the present invention to provide an unresponsive extension re-calling system which automatically calls back the caller based on the called party's response repeatedly.

According to the present invention, in an automatic private branch exchange having an automatic no-response transfer function, special III! Il! connection progress storage means for storing connection progress information of an incoming call to an extension subscriber; and a connection progress storage means for storing connection progress information of an incoming call to an extension subscriber; A non-response extension recall system is obtained, which is characterized by comprising an extension re-discharge control means for sending an extension.

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

The figure is a block diagram showing an embodiment of the unresponsive extension recall method of the present invention. In the same figure, the PABX is the calling extension subscriber (hereinafter @caller) IA, and the called extension subscriber (hereinafter called @caller)
Subscriber circuits (hereinafter referred to as LC) 2A, 2B, and 2C connected to the IB and transfer destination extension subscriber (hereinafter referred to as transfer destination) IC, a switch (hereinafter referred to as 8W) 3 that accommodates the LCs 12A, 2B, and 2C, and A special number identification device (hereinafter referred to as 5NA) 5 that analyzes the caller ID (call register, etc.) connected to the SW 3 and identifies the special number; An extension re-discharge control device (hereinafter referred to as RCM) that controls the timing of sending out signals.
6 and CCl0 (hereinafter referred to as M
M) 7, and a connection progress memory (hereinafter referred to as fcM
) 8 and a calling signal device (TRG) 9 that sends a call (number 7) to LC 2A, 2B, etc. according to the instructions of the CCIQ.
2. On 103, 104! 41A-t”resW3,0RT
4SNAs, MM7. Connected to Ru9 and signal #1
It is connected to RCM 5 by 05, 106, and 107 to perform a predetermined sequential cape. In addition, the RCM 6 includes an accommodation position information storage circuit (ENM) 60 that temporarily stores the accommodation position information of the calling/called party, and a calling signal sending timer circuit that sets the timing for sending out 1g and stopping at 12F, respectively. (hereinafter referred to as 1iGTM) 61 and a ringing signal stop timer circuit (hereinafter referred to as RSTM) 62.

Next, the operation of this embodiment will be explained.

Here, it is assumed that the called party IB has registered automatic no-answer forwarding so that when an incoming call is received, the call is forwarded to the forwarding destination IC. First, the calling party IA dials the extension subscriber number of the called party IB to call the called party IB, and as is generally known, the calling party IA-LC2A-8W3-I, C2B-called party 2B bus is set up and a discharge signal is sent to the called party IB.

However, the called party's IB will be unresponsive within a certain period of time due to a non-response (E, etc.), so these six incoming calls will be automatically reconnected to the forwarding destination ICE according to the automatic no-answer forwarding function of the PABX. The transfer destination IC responds to this incoming call and talks to the calling party IA. At this time, the CC 10 connects the signal lines 103 and 14.
The message to 10M8 via M7 is that the forwarding destination IC is responding to the unanswered forwarding call, and that the calling party IA and the recipient
Temporarily stores the connection progress information with the subscriber IH (+7) extension number. Then, when the transfer destination IC makes a decision to set up an unanswered extension recall for the called party IB, the CCl
0 instructs t3W3 to signal line 100 - CLC2C
-8W3 (Link@) - Since the bus of ○RT4 is set, the transfer destination IC dials a special number (randomly set) after hearing the dial tone from 0RT4. 0RT4 accumulates this dial information from the transfer destination IC and sends it to 8NA5. 8NA5 analyzes whether the received dial information is a special number or not, and when the special number is identified, this special number information is transmitted to the signal line 102.
to CCl0 via. On the other hand, 0RT4 is the signal line 101
The response extension accommodation location information and number information are sent via CCl0.
send to CCI O receives 10M8 from these received information.
The connection progress information stored in the signal /111103.
By reaching out via MM7, it learns that the transfer destination IC is responding and the extension subscriber numbers of the calling party IA and called party IB, and makes a call using these number information: +tIA
, identifies the accommodation location information of the called party IB, and further transmits signal #1.
The identification information is temporarily stored in the HNM60 via the signal line 106, and the information is transferred to the HNM60 via the signal line 106.
Recover LC2C, URT4 and 5NA5.

Next, the timeout of the RGTM61 is monitored using the C, Cl0U signal #106, and when a timeout is detected, the signal line 105 is turned on and the accommodation position information of the called party IB (therefore, LczB) is read from the ENM60, and then the RGTM61 is is activated to send a paging signal to the called party IB via the LC2B. At the same time, CCl0 turns on signal line 107 and R8T
The calling signal stop timing (therefore, the calling signal sending time) is set in M62. Furthermore, the ccio monitors the timeout of the R8TM62 using the call controller 107, and when a timeout is detected, activates the RG9 to stop sending a paging signal to the called party IB, and at the same time sets the timing of the RGT and M61. (i.e., set the calling signal transmission time interval). This sending of the calling signal to the called party IB for a certain period of time is repeated at the above-mentioned fixed time intervals as many times as necessary until the called party IB responds. When the called party IB answers, CCl0 reads the accommodation location information of the calling party IA (therefore, LCZA) from the KNM 60 via line 48 105 and transfers it to signal area 100.
Instruct SW3 to change L02B, SW3. A bus between LCZA is set up, and RG9 is activated by No. 4M l1A104 to send a calling signal to the calling party IA via LCZA.

In this embodiment, 8NA5 and RG9 are each a register and a signal device that can be easily realized by the prior art, and EINM60 and 10M8 are both general 1<
I can get it on AM. Also RG'l'M 61, RSTM
62 are general timer circuits, cci.

Sequence control by MM7 is generally executed by a program in the MM7 format.

As is clear from the above explanation, according to the unanswered extension recall method of the present invention, an extension subscriber who has responded to an automatic unanswered forwarding call can be called to a cine answering extension by dialing the #sister code. Since MB calls are automatically returned at 1 minute intervals, it is possible to avoid the trouble of requesting a forwarded call answerer to leave a message or having to call the person you wish to talk to again and again. This effect occurs.

[Brief explanation of drawings]

The figure is a block diagram showing an embodiment of the unresponsive extension recall method of the present invention. In the figure, IA... Calling intra-IM subscriber, I
B...Called extension subscriber, IC...Dan, transfer complete Bi'3#i! Participating ministries, 2A, 2B, 2C...
・Touguchi name rotation cord (LC), 3... Switch (SW), 4... Used 1G register (01<'l'1
5... Special '4f organ separation device (SNA) 6...
... Uchimori Tan call control device [(RCt~1), 7...
・・Main storage device (1, 8...Connection progress memory (LCLT), 9...U'' - Output signal device (R
U), 1o...Central control unit (C'C), 6
0...accommodation position 1〆I information storage circuit (1>' N
M), 61... Calling signal sending circuit (R('J 'f' AV)), 62... Discharge signal stopping circuit (17 circuits (1<M'1') IVl),
100-107 ...I No. 11 sparse.

Claims (1)

[Claims] In an automatic private branch exchange that has an automatic no-answer forwarding function,
special number identification means for identifying a special "number" from a calling register; connection progress storage means for storing connection progress information of an incoming call to an extension subscriber; 1. An unresponsive extension recalling system, comprising extension re-discharge control means for transmitting a fixed-time paging signal at fixed time intervals.