JPH0685546B2 - Attendant monitor interrupt call system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] A relay stand and a supervisor stand of a digital telephone exchange are provided,
It is possible to receive a call to a telephone trunk via a network and monitor or interrupt a call between an operator and a caller via a four-line branch call circuit.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control of a relay stand in which a large number of operators are seated, such as police and firefighting, and to an interrupt call system for monitoring or interrupting the call depending on the call content of a caller. .

There are both fires and first-aids for the 119th call related to firefighting, and it is easy to get confused when there is an explosion accident.
When it was necessary to contact a large number of parties immediately to make a call, as in the case of a murder case, the person in charge at the call reception desk first accepted the call and listened to the call contents, and determined that it was an important call. At that time, he asked the supervisor to signal him with his hand movements and monitor it. The same applies to the 104th call, which requires a number guide.

On the other hand, a company or the like has an exchange board for a central office line from a telephone station, an operator exchanges a call between a caller and the inside, and in a large company, a supervisor controls and controls. Such a call reception board and exchange board are collectively referred to as a "relay board" in this specification.

[Prior Art] Conventionally, the connection between the relay stand and the station line / extension has been as shown in FIG. That is, 11,12 ... are those where operators are seated at a plurality of relay stands, 21,22 ... are supervisor boards that are provided as needed, 3 is a digital network, 4
1, 42 ... is a relay stand control trunk, 51 is an operator handset in a certain relay stand, 52 is also a key, 53 is a circuit network, 61 is a supervisor handset in a certain supervisor stand,
62 is the same key, 63 is a relay corresponding to the key, 64 is the same contact,
Reference numeral 65 is a circuit network, 66 is an interrupt switch, and 67 is an amplifier.

When an incoming call is received at the relay stand and the call is answered by the operator, the operator immediately calls it, and when connecting to another called party such as an extension, the ten key provided adjacent to the normal key 52 is operated to call the called party number. Dial. The called party is called by the central control unit (not shown) and the network 3. When monitoring by the supervisor's intention during a call or when there is a request from the relay stand operator, the key corresponding to the stand on the stand stand 21
Operate 62. The relay 63 operates by operating the key 62,
Since the contact 64 is closed, the transmitter / receiver 61 is connected in parallel with the operator's handset 51, and the content of the call can be monitored. At this time, since the handset of the supervisor's stand enters in parallel with the connection line from the network 3 to the relay stand 11, 12, ..., the call level changes. Therefore, the amplifier 67 and the network 65 are used, and the caller is in an abnormal state. Try not to feel. As a result of the monitor, the switch 66 is operated when an interrupt is made as necessary to make a three-way call.

[Problems to be Solved by the Invention] In the conventional supervisor, one relay station is used for several relay stations, and one supervisor station is often provided so as to be in charge of a predetermined area. . Since a large number of devices are connected to the supervisor's stand as described above, there is not only one supervisor stand,
When two or three units are prepared and it is necessary to connect a key, a relay, a circuit network, etc. so that the supervisory board in a predetermined area monitors and interrupts the relay stand in the adjacent area, the whole equipment is large. Expensive on scale. Also, when multiple supervisors monitor and interrupt a call to one repeater in a serious incident, a multi-connection will result in a multi-connection, so even if the amplifier 67 is inserted, the call level will still drop significantly. . When the criminal was talking to the relay stand, many monitors were made,
When the call level drops, the criminal who notices it abnormally hangs up.

It is an object of the present invention to provide a monitor / interrupt call system in which the above-mentioned drawbacks are improved, the relay stand / supervisor stand is made as simple and compact as possible, and the call quality is not deteriorated during an interrupt call.

[Means for Solving Problems] In the principle diagram of the present invention shown in FIG. 1, the left and right of the alternate long and short dash line indicate the exchange side, and the left side indicates the line / relay stand side. In Fig. 1, 11,12 ... are a plurality of relay stands where operators are seated respectively, 21,22 ... are a plurality of supervisor stands provided as needed, 3 is a digital network, 41, 42 ... are relay stations. A stand control trunk, 51 is a handset for an operator in a relay stand, 52 is also a key, and 53 is a circuit network.

54 is a four-line branch communication circuit (connection circuit using a hybrid circuit) provided on the intra-station communication path of the relay stand 11, 55,5
6 ... is a telephone trunk provided on the side of the exchange network, at least as many as the supervisor's desks are prepared, and the other end of the telephone trunk network is connected to the hybrid circuit 54. 61 is for supervisors on a supervisory board. Handset, 68
Is a relay stand control trunk provided on the connecting line between the supervisor stand and the network 3, and 69 is a numeric keypad used for calling the relay stand from the supervisor stand 21.

[Action] When the supervisor's stand 21 interrupts the relay stand 11 during a call Numeric keypad 69
Dial to call the relay stand 11. The calling numbers are set in the relay stands 11, 12, ... Like the extension numbers, and when dialed from the supervisor stand 21, the telephone trunk 55 is called through the network 3. In FIG. 1, only connections to the relay stand 12 are shown in the network 3, but the same applies to the relay stand 11.
Then, dial from the supervisor stand 21 to make a telephone trunk.
55, that is, via the network 3 to make an incoming call to the relay stand 11, 12. The trunk 55 calls the relay stand 11 and is connected to the connection circuit 54 in a form in which the relay stand 11 responds. Relay stand 11
Since the second call path from the supervisor stand 21 is connected in parallel to the first call path between the caller and the calling party via the connection circuit 54, the monitor / interruption of the first call path is performed via the second call path. It can be carried out.

The supervisor stand 22 also calls the relay stand 11, and when simultaneously monitoring or interrupting, the calling number for the relay stand 11 is dialed. It is convenient for the calling number of the relay stand 11 to be similar to the typical handling of subscriber telephones. At this time, the telephone trunk corresponding to the relay stand 11 corresponds to the previously interrupted supervisor's stand, for example, the call arrives at 56.
Since the 54 side is multi-connected, it does not interfere with the interrupt operation.

[Embodiment] FIG. 2 is a diagram showing a configuration of an embodiment of the present invention. The same reference numerals as those in FIG. The exchange side is shown. In the connection circuit 54 (for example, a four-wire branch communication circuit called a hybrid circuit), 71 is a hybrid transformer (HYB) and 72 is an amplifier (AM).
P) and 73 are variable attenuators (PAD). 55 is a telephone trunk that enables interrupt calls, 59 is a telephone trunk only for monitors, 81 is a connection terminal (MDF), 82 is a response reception relay circuit (R
G) and 83 are game start contacts.

As is well known by the hybrid circuit 54, the telephone line side of the relay stand 11 is connected to two lines and the telephone trunk 55 side is connected to four lines. This connection circuit of the hybrid circuit 54 relays / calls from the supervisor's stand. The call level in the direction of the person in charge and the call level in the opposite direction in the direction of the supervisor stand can be set to predetermined values by the amplifier 72 and the variable attenuator 73, and the input of each call path by the hybrid transformer 71. -The output impedance can be set freely. Therefore, even when multiple supervisor boards are connected in parallel on the switch side of the hybrid circuit 54 so that interrupt calls or monitoring can be performed from multiple supervisor boards to the calling party, the impedance change applied to the relay line is small. Therefore, the calling party does not understand the change in the normal state.

Further, the telephone trunk 55 is provided in this embodiment because it is necessary for the supervisor to make a dial call when the supervisor's console monitors the repeater telephone line, and the operation by the telephone exchange is performed.

In this way, when interrupting the operator call from the supervisor stand 21 to the relay stand, both the call path to the caller and the call path from the caller are used. If you want to make a call from the stand 22 to the relay stand, for example, the operator of the relay stand lights up a red lamp indicating an abnormal state on the relay stand, and the other supervisor's stand that notices it is interrupted earlier. The call between the calling party and the relay stand / supervisor stand is monitored. Therefore, it is not possible to make a call between the original supervisor's supervisor and the supervisor's supervisor who came to monitor later. Therefore, the interrupt / monitor call operation according to the present invention cannot make a so-called "conference call" in which all parties call each other.

[Effects of the Invention] As described above, according to the present invention, there is no change in the call level at the time of connection when a monitor / interruption is made from a large number of supervisors to the relay stand, which is effective. Moreover, since the supervisor's stand itself does not have an amplifier or changeover switch, it is extremely small, and it is only necessary to add some hardware to the intra-block communication path of the relay stand, and that hardware is normally used in telephone exchanges. Because it is
The system can be inexpensive. Since the telephone trunk is provided for extension subscribers slightly apart from the exchange, the connection can be changed.

[Brief description of drawings]

FIG. 1 is a diagram showing a principle configuration of the present invention, FIG. 2 is a diagram showing a configuration of an embodiment of the present invention, and FIG. 3 is a diagram explaining a conventional relay stand interrupt call system. 11,12 …… Relay stand 21,22 …… Supervisor stand 3 …… Digital network 54 …… 4-line branch call circuit 55 …… Telephone trunk

Claims (1)

[Claims] 1. A plurality of supervisory stands (21,22) and a plurality of relay stands (11,12) attached to a telephone exchange including a digital exchange network (3), said relay stand (11,22). 1
2) In the method of performing monitor / interruption call using the supervisor's stand (21, 22) for the call with the caller made by the operator who operates 2), the relay stand (11, 12) and the For the first call path between callers, a plurality of second call paths for monitoring / interruption from the supervisor stand (21, 22) are connected to the first call path to connect the first and the second call paths. A connection circuit (54) for matching the input and output impedances of the two speech paths and setting the speech level of each of the first and second speech paths, and a trunk (55) connected to the network (3). , 56), and the supervisor stand (21, 22) receives the trunk (55, 56) via the network (3),
A relay stand monitor interrupt call system, wherein the first call path is monitored and interrupted via the second call path.