JPS5962379A - Unpresence transfer control system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a call forwarding control system in which a forwarding destination subscriber can receive calls in place of the qualifications of a subscriber who has requested call forwarding.

(2) Prior Art and Problems Call forwarding controlled by a central control unit has been put into practice in conventional telephone extensions connected by private branch exchanges. Extension subscribers who wish to have their calls forwarded must register in the exchange's storage device in advance, and when they actually receive a call forwarding, they can request and confirm the number of their extension to be forwarded to. When the call is forwarded to the forwarding subscriber, the call is forwarded to the subscriber.However, extension subscribers have various qualifications such as Special A, A, Junior A, Otsu, and C, and there is discrimination in connection for outgoing and incoming calls. Therefore, when an incoming call from a highly qualified subscriber is transferred to a less qualified JD person, even if the operator dials the enrollment examination number and specifies the forwarding destination in the storage device, the forwarding destination subscriber If the operator's qualifications are in a class that cannot receive calls, the calling operator may be confused.

(3) Purpose of the Invention The purpose of the present invention is to overcome the above-mentioned drawbacks, and to ensure that the subscriber to whom calls are forwarded has the same qualifications as the forwarding subscriber, so that calls can be forwarded and received at the time of continuation of calls. The object of the present invention is to provide a call transfer control system that does not cause trouble.

(4) Structure of the Invention To achieve the above-mentioned object, the present invention σ) In the structure, a private branch exchange is provided with a storage device for registering information of subscribers who wish to receive call forwarding service. In a call forwarding control system that performs call forwarding when an incoming call 1- is received, the connection conditions regarding the forwarding subscriber in the storage device are stored as the connection conditions of the forwarding subscriber and the connection conditions of the forwarding subscriber when performing the call forwarding operation;
It is controlled within the device.

(5) Embodiment of the Invention The drawing shows an embodiment of the present invention in which a call is received on a private branch exchange known line and the call is transferred and connected. COT indicates central office trunk.SUB-A,
A case in which SUB-B is an extension subscriber and SUB-A registers to receive call forwarding service and requests to be forwarded to SUB-B when he is absent will be described later.

OPT is operator trunk, ATT is central office line relay board, C
C is a central controller, MM is a main memory, and RGT is a call trunk. The information storage status of the main memory device MM is (Al
(Each subscriber 5UB-A in the Bl part.

The subscriber information for 5UB-B is stored, the call connection information is stored in the part (C), and so on.

After requesting that the incoming call to 5UB-A be forwarded to 5UB-B, when there is a central office trunk coTVcN call, the operator responds on route ■ of network NW and sends the call to 5UB-A I know it's an incoming call. When the operator dials the subscriber number of 5UB-A, the information is transmitted to the central controller CC and stored in the storage device IJM.
is read and analyzed. As a result, subscriber information is extracted from the subscriber number of 5UB-A, and the presence or absence of a call transfer request is checked, and it is determined that there is a request.

Since the transfer destination is 5UB-B, the central processing bag fC
Next, C determines whether SUB-B is empty or occupied, and when it is a wall, changes the information field contents to 5 for the subscriber information field of 5UB-B.
Corresponds to that of UB-A (replaced form) 5UB-B
Check (route ■).

Kokote5UB-BL L! Since it has the qualification of 5UB-A, if the subscriber information of 5UB-A allows incoming connection to the central office line, then even if 5UB-B is not connected to the central office line, connection is possible in this case. Therefore, a ringing tone trunk RGT is connected to 5UB-B and transmitting a ringing tone. 5U
When B-H's telephone is off-hook and the office line relay board is disconnected, a call is started via route (3). In order for 5UB-B to continue the qualification of 5UB-A until the call is terminated and on-hook, the storage device MM is used as call connection information regarding the call.
The subscriber number or accommodation location information of the transfer source subscriber SUB-A is stored in the (C1 part).By doing so, the desired callback transfer (e-mail to another person), add-on (three-party call), etc. Possible. In this case, 5UB-B
is itself unqualified and cannot handle operator calls (
・In this case, even if the call is forwarded to 5UB-A and the call ends, even if the call is made by dialing the subscriber number of 5UB-B with the result of the call being forwarded to 5UB-B K and 5UB-A, No connection is made. Also 5UB-B
When making a call from a telephone, reading subscriber information requires 5U.
B-B, no change in entitlement is made. 5
UB-A (C) is transferred to 5UB-B in the same way as described above even when it is called as an internal call.In short, only incoming calls to 5UB-A are transferred to 5UB-B, and 5UB-B is transferred to 5UB-B. B's qualification is then temporarily changed to 5UB-A.

(6) Effects of the Invention In this way, according to the present invention, when there is a difference in subscriber information regarding forwarding destination and forwarding subscribers, especially in connection regulations, confusion in the operating power of the exchange during call forwarding service can be eliminated. , service improvements will be made.

[Brief explanation of the drawing]

The drawing is a block diagram showing an embodiment of the present invention. NW... Network 5UB-A... Transfer source subscriber 5UB-B... Transfer destination subscriber NTT...
・Public telephone office ATT...Central line relay stand CG...
Central control unit MM...Main memory COT...
・Station line trunk OPT...Operator trunk R
OT... Ringtone Trunk Patent Applicant Fujitsu Ltd. Representative Patent Attorney Eisuke Suzuki Proceedings Negotiations (Spontaneous) October 22, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi■, Front thread of the case 1981 1957 Patent Application No. 172293 2, Title of the invention: Missed forwarding control method 3, Name of person making the amendment (522) Fujitsu Co., Ltd. Representative: Takashi Yamamoto 4, Agent 5, Date of amendment order Voluntary action 6, Amendment Subject: Full text of the specification 7 Contents of amendment: Reprint of the specification (no change in content)
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Claims (1)

[Claims] In a call forwarding control system in which a private branch exchange is provided with a storage device for registering information of a subscriber who wishes to receive a call forwarding service, and a call is forwarded when a call arrives to the registered subscriber, the storage device is used during the call forwarding operation. 1. A missed transfer control system characterized in that connection conditions regarding a transfer destination subscriber are controlled in correspondence with connection conditions of a transfer source subscriber within the storage device.