JPH02142267A - Occupation transferring system - Google Patents

Abstract

PURPOSE:To attain speedily correspondence even when a transferring source extension is urgent to a subscriber by accumulating the housing position information of a transferring destination extension and information to identify an occupation transferring call and interrupting the transferring source extension, which is occupied, when the transferring destination extension executes operation to be determined in advance. CONSTITUTION:A call originating extension telephone set (TA) 1, an occupation transferring source extension telephone set (TB) 3, an occupation transferring destination extension telephone set (TC) 5 are respectively housed through subscriber circuits (LC) 2, 4 and 6 to a main switch 7 and a central control unit (CC) 8 executes all sequence control in an exchange. When it is judged that the business of an incoming call is an urgent business to the subscriber of the TB 3, hooking operation is executed. When these hooking information are received, the CC 8 disconnects a channel between the TA 1 and TC 5 and interrupts the TC 5 to the call of the TB 3. The TB 3 hears an interrupting tone and when an opponent during the call is recovered, the call is executed between the TB 3 and TC 5. After that, when the TC 5 executes on-hook, the channel is set between the LC 2 and LC 4 by the CC 8. Thus, the TB 3 can execute the call with the TA 1.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a busy transfer system in an automatic private branch exchange [Prior Art] Conventionally, in this type of busy transfer system, when the first called party is When a call arrives at the extension, the call is transferred to the busy forwarding destination extension registered in advance by the first called party.
When the called party is not at the transfer destination and is at the transfer source, the calling party speaks to the second called party who answers the transfer destination extension to message the first called party. I had requested it.

[Problem to be solved by the invention]

In the conventional busy forwarding method described above, when the party the caller wants to talk to, that is, the first called party, is busy, the caller calls the second called party who answered the busy forwarding destination extension to leave a message. Since I had started to ask for
The disadvantage is that when the second called party wants to talk to the first called party, the second called party must immediately go to the first called party and inform them that the call is urgent. be.

[Means to solve the problem]

The busy forwarding system of the present invention is provided in an automatic private branch exchange having a busy forwarding service function. The present invention is characterized by comprising an interrupt means for interrupting a busy transfer source extension when the destination extension performs a predetermined operation.

〔Example〕

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

FIG. 1 is a block diagram of an automatic private branch exchange showing one embodiment of the present invention.

In FIG. 1, a calling extension telephone (hereinafter referred to as TA) 1, a busy transfer source extension telephone (hereinafter referred to as TB) 3. Busy transfer destination extension telephone (hereinafter referred to as TC) 5 is connected to subscriber circuit (hereinafter referred to as LC) 2.
．． The central controller (CC) S performs all sequence control within the switch, and the main memory (MM) 9 stores various programs and data. is stored. MM9 is LC
Accommodation position information on SWTs 2, 4, and 6 (hereinafter referred to as LENA)
LENB, LENC) and busy transfer call identification information (CTRF).
)91 is included. In addition, SW7 has an interrupt sound trunk (
10, Hold Music Trunk (hereinafter TNTB)
11 are also accommodated.

Next, the operation of this embodiment will be explained.

First, busy transfer with TC5 as the transfer destination is registered from TB3 using a known method. Here, TAL makes a call and T
If it is assumed that TB3 is busy when the extension number of B3 is dialed, CC8 controls SW7 to transfer and call the call to TC5 (shown by the chain line), and also calls ME.
LE of TB3 in the LENC compatible area of TC5 on M91
Accumulate NB. TC5 answers and the caller makes a call, but if the answerer, who is not the caller's desired party, determines that the matter of the incoming call is urgent for the subscriber of TB3, he or she performs a predetermined operation, e.g. Perform hooking operation, CCS is LC6
When this hooking information is received via LENC, it searches MEM91 using LENC, reads LENB, controls SW7, sends an interrupt sound from TNTAlo to TB3, and then disconnects the communication path between TAI and TC5 and makes a call. TNT for those
Bl 1 sends a hold message and sets up a call path between LC6 and LC4, causing TC5 to interrupt the call of TB3 (indicated by a broken line arrow). TB3 hears the interruption sound and learns that he has an urgent call, and when he asks the other party to recover the call, the call becomes between TB3 and TC5. After that, T
When C5 goes on-hook, CC8 controls SW7 to stop the on-hold tone that was being sent, and opens the communication path between LC2 and LC4 (
(shown with solid line), TB3 becomes LC4,S
W7. Telephone calls can be made to and from TAI via LC2.

〔Effect of the invention〕

As explained above, the present invention allows the transfer destination extension to interrupt the transfer source extension when the transfer source extension is busy and the transfer destination extension is busy. This has the effect of being able to respond quickly even in the case of an emergency.

Loud sound circuit (LC), 3...Busy transfer source extension telephone (T
B), 5... Busy transfer destination extension telephone (TC), 7...
・Main switch (SW), 8...Central control unit (CC)
), 9... Main memory (MM), 10... Interruption tone trunk (TNTA), 11... Hold music trunk (T
NTB), 91...Interrupt destination information memory (MEM).

Claims (1)

[Claims] An automatic private branch exchange having a busy forwarding service function includes a storage means for storing accommodation location information of a forwarding destination extension and information identifying a busy forwarding call, and a storage means for storing information on the accommodation location of a forwarding destination extension and information for identifying a busy forwarding call, and a storage means for storing information on the accommodation location of a forwarding destination extension and information for identifying a busy forwarding call, 1. A busy transfer method characterized by comprising: interrupt means for interrupting a busy transfer source extension when a call occurs.