JPS63257359A - Hooking system in cordless telephone system - Google Patents

Abstract

PURPOSE:To prevent end of call of a line in the operation intended of hooking by the user by allowing the RTEL to section the hooking between the RTEL and CE and the end of call and distinguishing the hooking and end of call by a different signal. CONSTITUTION:In already being in the talking state, when an off-hook switch SW1 is depressed from a radio telephone set RTEL 3, the RTEL 3 discriminates it to be hooking and an off-hook signal 41 is sent to a radio connection equipment CE 2. The CE 2 receiving the off-hook signal 41 sends a loop open signal 42 to a radio line controller RCU 1 for a time T1 only. If the RTEL 3 sends an end of all signal, the CE 2 opens the loop. Thus, no end of call comes by the hooking operation of an off-hook switch and even when the call reaches end in excess of a time T2 in error by the hooking operation by the on-hook switch and off-hook switch, since both the CE and RTEL go to the end of call, the event of only a radio line left is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a mid-call hooking relay system in a cordless telephone system.

(Prior art and its problems) In a conventional cordless telephone system, when an off-footer switch is held down on a radio telephone (hereinafter referred to as R position) for a locking operation, a signal indicating this state (for example, an off-footer switch) is sent for that period of time. The off-footer operation was realized by transmitting a signal (signal) to a wireless connection device (hereinafter referred to as CE) and opening the loop of the public line for a short period of time while the CE was receiving the signal.

Therefore, if the off-hook switch is held down for a long time on the R side, the public line exchange will regard it as a call termination signal, disconnect the line, and end the call. However, the wireless line between the R station and C2 remains connected. At this time, there is a high possibility that Needy will conclude that the wireless line has also been disconnected. Furthermore, when configuring a cordless telephone system in which a CE can be accessed by multiple R units, the above-mentioned incorrect operation of the R unit may result in invalid monopolization of the CE, making it impossible to operate other devices. There was a drawback that would go away.

(Purpose of the Invention) The present invention provides that the R station separates the processing of hooking and call termination between the R station and the CE, and distinguishes the hooking and call termination by different signals, so that the user does not intend to hook up. It provides a hooking method for cordless telephone systems that prevents the line from being terminated by operation.

(Structure of the Invention) In order to achieve this object, the present invention enables the wireless telephone to be connected by pressing the off-hook switch during a call or by pressing the off-hook switch within a predetermined 12 hours after pressing the on-footer switch. identifies whether the call is in progress or terminated, and sends a corresponding signal to the wireless connection device,
The wireless connection device is configured to realize a hooking operation or a call-terminating operation by opening the line loop for each time period depending on whether the signal is to be terminated or hooked when the wireless connection device receives the signal. There is.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows the system configuration of the present invention. In the same figure,
1 is the radio line controller (RCU), 2 is the wireless connection device (
CE), 3 is a wireless telephone (RTEL). Although this figure shows the case where the RCU is the upper station of the CE, a normal subscriber exchange or PBX may be arranged instead of the RCUO.

FIG. 2 is a block diagram showing the main configuration of each device in the system of FIG. 1. The RCUI is connected to the P13X telephone line control circuit 31. RCU control circuit 32. and a CE telephone line control circuit 33. CE2 is a telephone line control circuit 34. CE control circuit 35. and RT radio circuit 36
It is equipped with Furthermore, the RTE L3 is connected to the CE wireless circuit 37. RT E L 11 control circuit 38° key human control circuit 39. and a switch board 40.

In such a system, if it is assumed that the call state is already in progress, the off footer switch S from the R position 3
When W is pressed, RTE L 3 determines that hooking has occurred, and sends an off-footer signal 41 to CE 2. The CE2 that has received the off-footer signal 41 is configured to transmit a loop open signal 42 to a radio line control unit (hereinafter referred to as RCU) for a time T1. If R station 3 sends a call termination signal, CE2 opens the loop.

FIG. 3 shows the operational flow of the off-hook device and call termination processing. At RT L3, there are two typical methods for sending an off-hook signal: pressing the off-footer switch SW, and pressing the off-footer switch SWI within time T2 after pressing the on-footer switch SW2. be.

However, the present invention is not limited to this, and a switch equivalent to a hook switch of a general telephone may be operated. That is, R position 3
determines whether the call is hooked or terminated from the switch operation described above, and transmits a hooking signal or a terminated signal.

Here, for example, the following values are valid for the switch press time T, , T, which corresponds to hooking.

Period T1: Loop opening time in current hooking (for example, 500m5ec) Tz: Time during which the user can press the on-hook switch SWt and the off-footer switch SWI without worrying about the delay in closing the call. (For example, 1.5 sec) (Effects of the Invention) As explained in detail above, according to the present invention, the hooking operation using the off-footer switch does not end the call, and the hooking operation using the on-footer switch and the off-footer switch does not end the call. Even if the call is terminated after 12 hours by mistake, the call will be terminated at both the CE and R locations, which provides the advantage that only the wireless line will not be left behind. Furthermore, since the CE detects the signal from the R location and performs hooking and call termination processing, a hooking method that does not depend on the operating method or structure of the R location can be realized.

[Brief explanation of the drawing]

FIG. 1 is a side view of the configuration of a cordless telephone system according to the present invention, and FIG. 2 is a block diagram showing the main configuration of each device.
FIG. 3 is an operation flow diagram showing a hooking operation and a call termination operation. ■...Radio line control bag N (RCU), 2...Wireless connection device (CE), 3...Wireless telephone (R position), SWl...Off footer switch, SW2...On footer switch .

Claims (1)

[Claims] In a cordless telephone system consisting of a wireless telephone and a fixed wireless connection device facing the wireless telephone, the wireless connection device is connected to an exchange line at a minimum. to the wireless connection device, and the wireless connection device is configured to realize a hooking operation by opening the line loop of the telephone line for a predetermined short time T_1 when receiving the hooking signal. Hooking method in cordless telephone systems.