JPS6068757A - Priority camp-on system - Google Patents

Abstract

PURPOSE:To decrease the waiting time of a priority extension by providing a function resetting camp-on with priority depending on the classified call of a calling extension when the camp-on is set already while a called party is busy. CONSTITUTION:When extension subscribers C, D are in talking and an extension B sets camp-on to the extension C and the camp-on is set by a specific number after the extension A makes a call to the extension C and a busy tone is transmitted, an interruption tone TST is transmitted to the extensin C and a set tone SST is transmitted to the extension A, then the sate of the extension C is supervised by the central controller CCU, the priority of the extensions A and B is read from a memory MEM and the camp-on is set to the extension having high priority.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a camp-on system for storage program controlled exchanges.

The camp-on method is when you encounter someone during a call,
By dialing the calling party or a special number, the exchange remembers the called party information and the calling party information and automatically connects the called party and the said calling party when the called party becomes available. This method calls and connects the caller.

Prior Art In this type of conventional system, when multiple callers set camp-on for the same called party, the called parties are connected in the order of camp-on registration. For this reason,
The drawback is that the caller may have to wait for a long time, wasting time, and often not being able to quickly address important matters.

Furthermore, due to limitations such as storage capacity, there may be cases where the caller cannot set up camp-on even if he or she dials a special number.

OBJECTS OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional drawbacks, and to solve the above-mentioned conventional drawbacks, even when the called party is busy and camp-on has already been set, priority 11 "highest subscriber" The purpose of the present invention is to provide a priority camp-on method that allows camp-on to be set preferentially.

Invention configuration #,,3? In the camp-on method of the exchange, the camp-on method of Iming is a storage program: I, II. When tKing-on is set for a subscriber by multiple extension subscribers, when the busy line becomes empty, the extension subscriber with the highest priority among the multiple extension subscribers It is characterized by preferentially dissecting connections.

Embodiments of the invention Next, the invention will be described in detail with reference to the drawings.

Figures 1 and 4 are relay system diagrams for explaining the -
I am aware of the situation. Now, as shown in Fig. 1, extension subscribers C and D are connected to each other via the switching network l) W and the local trunk IOT and are busy, and extension subscriber B joins the extension. ? If camp-on is set for C, then extension 1'? is set in the storage device MEM? Information such as the numbers () and accommodation positions of C and B are stored, and the central control unit CCU monitors the status of extension subscriber C at regular intervals.

In this state, when extension subscriber t5A makes a call to extension subscriber C, extension subscriber A is connected to the busy j'1 sending trunk rank T, and the busy j' is sent to the sending trunk B T.
Listen to the busy tone from T. When extension subscriber A hooks up while listening to the call and then dials a special scent, the central control unit CCU indicates that extension subscriber AA requests extension subscriber C to camp on. Knowing this, he stores the information of extension subscriber A and extension subscriber C in the storage device MEM, interrupts the called party C, and sends a message from the interrupt tone transmission trunk TST as shown in FIG. Extension subscriber C via intra-office trunk IOT
Notification is sent by sending an interrupt message for a certain period of time.

In addition, for calling party A, a service setting tone is sent for a certain period of time from the service setting tone transmission trunk SST (second
(see figure).

FIG. 3 shows the connection state after the transmission of the above-mentioned interrupt sound and service setting sound is completed. In this state, the medium heat control device CC
U monitors the status of the extension subscription ``I'ic, and when it detects that the extension subscription Rc is empty, the unit 10'/;
d) 1: Information on extension subscribers A and B who have set up a telephone service from extension subscriber C is sent from MEM. Next, identify the priority + nn of extension subscribers A and B, call the extension subscriber A with the highest priority 11, and send out the calling ff from the used sending trunk 10JT, and
A paging sending trunk RG 'FJS111' sends out a signal. (See Figure 4). The priority order in I is as follows:
The password is set for each extension subscriber, for example, by class, and is stored in the t1 device MEM, for example. The storage device MEM and the central control unit CCU constitute one stage for identifying priorities. When extension subscribers with the same priority set camp-on, priority should be given to the subscriber who set camp-on first.

Further, by similarly setting priorities for incoming trunks, it is possible to apply the present invention to relay-mediated connections as well.

Effects of the Invention As described above, in the present invention, priority is given to extension subscribers.
+lF1 is set up so that high-priority subscribers can set camp-on preferentially, so high-priority subscribers can avoid wasting money and quickly connect to busy subscribers. This has the effect of making it uf-enabled.

[Brief explanation of the drawing]

FIGS. 1 to 4 are relay system diagrams for explaining embodiments of the present invention, and the connections at each stage are shown in FIGS. It is a diagram showing an island. In IA, A-D: Extension subscriber, SW work, CCU: Central control unit, ME
M: Storage device, IOT: Local trunk, B'r
'r: Busy tone transmission trunk, SST: Service setting tone transmission trunk, RBT: Ringing tone transmission trunk,
RGT: Ringing signal transmission trunk, 'r ST:
Interruption sound transmission I rank. Applicant: NEC Co., Ltd. Agent: Patent Attorney: J. Toshimune Figure 3 Figure 4

Claims (1)

[Claims] In the camp-on method of a storage program control exchange, when a camp-on is set for a busy subscriber by multiple extension subscribers, the extension subscribers are given priority and a means for identifying the priority is provided. The priority camp-on system is characterized in that when the busy subscriber becomes vacant, an extension subscriber with a higher priority among the plurality of extension subscribers is connected preferentially.