JPH0315390B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a central office line termination connection system in a private branch exchange.

(2) Conventional technology and problems Conventionally, when connecting to a central office line, there have been two methods: the operator manually connects to a specific extension after the operator answers the incoming call, and the automatic guide system when the operator is absent, such as at night. There is a present telephone switching method that includes connection of two types of telephones, but the former has the disadvantage that there is a delay in responding to a stagnant call, and the latter has the disadvantage that it is impossible to connect to the intended called party or device.

(3) Purpose of the Invention The purpose of the present invention is to realize a means for eliminating connection delays and non-connections to target subscribers in connection with the latter type of automatic switching system.

(4) Structure of the Invention The present invention provides a private branch exchange having a function of connecting an incoming call to a central office line to a relay stand, which specifies that the incoming call to the central office line is connected to the relay stand without going through the relay stand. The private branch exchange has a talkie device having an announcement sending function and a function of receiving a code specifying an extension or a device, and a storage means for storing information specified by pressing the specific button. , further comprising a connection means for connecting the incoming call to the central office line to the relay stand or the talkie device depending on the presence or absence of information stored in the storage means, and when the central office line incoming call is received, the specified information is stored in the storage means. If not, connect the incoming call to the central office line to the relay stand, and if specific information is stored, connect the incoming central line call to the talkie device and send a predetermined announcement to the central office line. Then, based on the code received from the central office line, the call is terminated to the corresponding extension or device.

(5) Embodiment of the Invention As an embodiment of the present invention, a central office line incoming call connection system in which an incoming call to a specific central office line is automatically answered after a relay operator presses a button and connected to an extension will be explained using drawings. .

In the figure, GIT is a specific station line trunk, ATT
is the central office line relay stand, CDREC is the code receiver, SUB is the extension line, NW is the communication path, SPC is the communication path/trunk drive monitoring device, CC is the control device, and MM is the memory.

When the ATT handler presses the ATT specific button, the CC is notified via SPC, and the CC receives the button press information as MM.
to be memorized.

CC detects the incoming call to CIT via SPC and ATT
Check whether a specific button has been pressed by referring to the MM. If button press information is stored in MM, CC is
In addition to issuing commands to CIT via SPC and responding to the central office line.
Connect CIT to CDREC via the path shown in NW and start CDREC. When CDREC receives a start signal, it announces to CIT and then sends PB
Enters code reception state and receives PB code from CIT.

The received code is notified to the CC via SPC, and the CC connects to the corresponding SUB via the path after code analysis.

When a call arrives at CIT, if the specific button information of ATT is not stored in the MM, it is sent to ATT as before.

(6) Effects of the Invention According to the present invention, an incoming call from a central office line can be connected to a target extension line without being held for a long time even if the number of handlers is small or absent, thereby improving serviceability and reducing costs.

[Brief explanation of the drawing]

The figure is a diagram showing a central office line incoming call transfer system according to an embodiment of the present invention. CIT: Office line trunk, ATT: Office line relay stand,
CDREC: code receiver, SUB: extension subscriber,
NW: Communication path, SPC: Communication path connection, equipment monitoring device, CC: Control device, MM: Memory.

Claims (1)

[Scope of Claims] 1. In a private branch exchange having a function of connecting an incoming call to a central office line to a relay stand, a specific button for specifying that the incoming call to the central office line is to be connected to the relay stand without going through the relay stand. The private branch exchange is equipped with: a talkie device having an announcement sending function and a function of receiving a code specifying an extension or a device; a storage means for storing information specified by pressing the specific button; connection means for connecting an incoming line call to the relay stand or the talkie device depending on the presence or absence of information stored in the storage means; connects the incoming call to the central office line to the relay stand, and if specific information is stored, connects the incoming central line call to the talkie device and sends a predetermined announcement to the central office line; A central office line incoming call transfer system characterized by forwarding calls to the appropriate extension or device based on the code received from the central office line.