JPS6178257A - Individual incoming call plural party simultaneous calling system - Google Patents

Abstract

PURPOSE:To decrease the possibility of no response due to absence of an extension by assigning extension numbers of a proper number corresponding to trunk lines for storage. CONSTITUTION:When an incoming call comes in a trunk line trunk COT4, a CPU5 detects it to read extensions 11, 12, 13 assigned corresponding to the incoming trunk line, a switch to the extensions is reserved to attain simultaneous calling. When the extension 11 responds, the CPU5 detects it through an extension circuit 21, the stop of a call signal is instructed to an LLA21 and an instruction clearing the call state is given to an MEM6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a simultaneous paging system for multiple individual incoming calls in a private branch exchange.

(Prior Art) As shown in FIG. 2, the conventional individual call receiving system allocates and stores an extension number corresponding to a central office line.

Therefore, there was a drawback that there was a large possibility that the extension would not be answered due to absence. In Figure 2, 1 is an extension telephone (A), 2 is an extension circuit (LLA), and 3 is a switch network (SW).
), 4 is a central office trunk (COT), 5 is a central control unit 1 (CPU), 6 is a memory (MgM), and 7 is a signaling device (RING).

(Object of the Invention) The object of the present invention is to provide a simultaneous ringing system for multiple individual incoming calls, which reduces the possibility of an extension not being answered due to absence by assigning and storing an appropriate number of extension numbers for each central office line. .

(Structure of the Invention) According to the present invention, a private branch exchange has a storage device that stores a plurality of extension numbers corresponding to the central office line, and when a call is received from the central office line, it simultaneously calls the extension subscriber of the corresponding central office line. , an individual incoming multiple simultaneous paging system is obtained, which is characterized in that only the subscriber who picks up the handset first can respond.

(Example) Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram of a relay system according to an embodiment of the present invention. In Figure 1, the same symbols as in Figure 2 indicate the same parts, 11 to 1.
3 is an extension line, and 21 to 23 are extension circuits.

A method will be briefly explained in which a plurality of extensions are called upon arrival of a call on the central office line, and the ringing signal to the Ikeuchi line is stopped upon response to any one of the extensions.

When there is an incoming call on COT 4, the QCPU 5 detects this in a known manner, then accesses M16M6 and calls extensions 11 and 12 which are assigned to correspond to the terminating station line.
3 and then reserve switches for the extensions and make all calls at once. If the inward ills of the three extensions 11 and 12.13 respond, the CPU 5 detects this through the entire extension circuit (LLA) 21, and instructs the LLA 21 to stop the ringing signal, and at 22.23. A similar command is issued to MEM8, and a command is issued to MEM8 to change the call status to CR'7. Next, only the connection between extension All and COT 4 is made, and the switch for the extension circuit 2423 of the song is cleared.

(Effects of Calling BJI) As explained above, the present invention has the effect of reducing the possibility that an extension will not respond due to absence by allocating a plurality of extensions to correspond to the central office line.

[Brief explanation of the drawing]

FIG. 1 shows a relay system diagram of an embodiment of the individual call termination system according to the present invention, and FIG. 2 shows a relay system diagram of a conventional individual call reception system. 1, 11.12.13...Extension telephone, 2.2
1.22゜23・・・Extension circuit, 3・・・・・・
switch network, 4... central office line trunk,
5...Central control device #, 6...Memory, 7...Signal device.

Claims (1)

[Claims] The private branch exchange has a storage device that stores multiple extension numbers corresponding to the central office line, and when a call is received from the central office line, multiple extension subscribers corresponding to the central office line are simultaneously called, and only the subscriber who picks up the handset first A simultaneous ringing system for multiple individual incoming calls, which is characterized by the ability to answer individual calls.