JPH10126517A - Facsimile equipment with telephone and facsimile switching function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out a facsimile reception operation through the detection of a call from both a telephone network and a facsimile communication network by selecting a facsimile reception mode automatically and operating the facsimile equipment in the case of detecting a call signal after a line is closed. SOLUTION: In the case that a CNG detection section 5 detects a CNG signal from a telephone network within a prescribed period after a line L is closed or a detection section 4 detects a call signal from a facsimile communication network, the facsimile reception mode is automatically selected and the facsimile equipment is in operation in the mode. When no CNG signal nor call signal is detected within a prescribed period, a pseudo ring back tone generated by a pseudo ring back tone generating section 6 is sent periodically for a prescribed number of times to a caller. Furthermore, a pseudo bell tone generating section 8 generates a pseudo bell tone to urge telephone sets T1, T2 to lift up each handset and when the handset is lifted up, the telephone set is able to make a speech to a caller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a telephone, generates a pseudo ringback tone and a pseudo bell sound after an automatic call, and enables both telephone communication and facsimile reception during this period. The present invention relates to an improvement of a facsimile apparatus having a telephone / fax switching function having a configuration.

[0002]

2. Description of the Related Art Conventionally, facsimile apparatuses having a function of automatically switching between telephone and facsimile by setting a mode have been widely used. In the facsimile apparatus of this type, in the automatic telephone / fax switching mode, when a call signal (ring tone) from the circuit exchange is received a predetermined number of times, the facsimile apparatus automatically receives a call, and then sends a pseudo ring back tone to the other party at regular intervals. In the meantime, if a predetermined facsimile calling signal such as a CNG signal from the other party is detected, the facsimile communication operation is started.
If a facsimile calling signal is not detected within a predetermined time,
Prompt pick-up of the telephone (handset) and sound a pseudo-bell sound to execute the call.

[0003] Here, the "pseudo bell sound" is different from a bell sound based on a ringing signal from a circuit exchange, and is a bell sound made by a facsimile apparatus. And the handset is not taken up within the above-mentioned predetermined time,
When the number of times of pseudo ringback tone transmission reaches a predetermined maximum number, a procedure signal for executing facsimile communication is transmitted, and if an appropriate procedure signal is not returned from the other party, At this point, a communication error has occurred and the line has been disconnected.

On the other hand, recently, in facsimile communication, in addition to a telephone network, a dedicated line, an integrated services digital network (ISDN), a facsimile communication network (F-net), and the like can be used. According to, compared to the case of using the telephone network, the transmission speed can be increased, using the data storage function on the network, etc.
Various services are now available at low cost.

[0005]

However, the above-described conventional facsimile apparatus must have a function of utilizing the communication network when performing facsimile communication via the facsimile communication network. Is presumed to be dedicated to facsimile communication, so that it is necessary to start reception upon receiving a predetermined call signal of the facsimile communication network in the automatic incoming call mode.

Therefore, in the automatic telephone / fax switching mode, a call from a facsimile communication network is not assumed, and facsimile reception cannot be performed.
In addition, this problem has become remarkable in a facsimile apparatus which can connect a plurality of lines which has recently become widespread, and its improvement has been studied. The present invention has been proposed in view of the above points, and in a telephone / fax automatic switching mode, a telephone capable of detecting a call from both a telephone network and a facsimile communication network and starting a facsimile receiving operation. -It aims to provide a facsimile machine with a fax switching function.

[0007]

A facsimile apparatus with a telephone / fax switching function according to the present invention proposed to achieve the above object has the following means. According to the first aspect, after detecting a call signal and closing the line, when a predetermined facsimile call signal from the telephone network or a predetermined call signal from the facsimile communication network is detected, the mode is automatically switched to the facsimile reception mode. It is characterized by operating.

[0008] After detecting a call signal of 16 Hz from the exchange, ringing a bell sound a predetermined number of times, and automatically receiving a call, a CNG signal (calling tone) from the telephone network or a call signal of 1300 Hz from the facsimile communication network is sent. Accept. Note that if the handset of the telephone is picked up after the automatic incoming call, the telephone can be used for talking.

According to a second aspect of the present invention, in the first aspect, a period for detecting a predetermined facsimile calling signal from the telephone network and a period for detecting a predetermined calling signal from the facsimile communication network after the line is closed. And is provided separately. The CNG signal from the telephone network is
Since a 1100 Hz signal that continues for 0.5 seconds is output at 3 second intervals, the detection period may be 3 seconds or more, and a 1300 Hz calling signal from the facsimile communication network is closed on the network side. Since the detection is continued for several seconds after the detection, the detection period may be about one second.

A third aspect of the present invention is characterized in that, after the line is closed, a pseudo ringback tone is not generated during a period for detecting a predetermined call signal from the facsimile communication network. In the case of transmission via a facsimile communication network, a pseudo ring-back tone is unnecessary, so that a pseudo ring-back tone is not generated during the detection period of a 1300 Hz calling signal. Also, during this detection period, in order to prohibit answering by the telephone, a pseudo bell sound is not generated so that the call can be detected reliably.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of a facsimile apparatus F with a telephone / fax switching function according to the present invention. This facsimile machine F
Is a facsimile device F in addition to facsimile communication.
, Or a telephone set T2 connected in parallel to the same line L as the facsimile apparatus F.

In addition to a telephone network, a facsimile communication network (F-net) is connected to a line switch (not shown) to which the line L is connected, so that facsimile communication can be performed through both. ing. Here, the main body of the facsimile machine F includes a main control unit 1 including a CPU and the like,
A line control unit 2 for switching and controlling the connection to the line L between the facsimile main unit and the telephones T1 and T2, a modem 3 for image data communication, and 1300 from the facsimile communication network.
1300 Hz detecting unit 4 for detecting a predetermined calling signal of 1 Hz
And a predetermined facsimile calling signal C from the telephone network.
CNG detection unit 5 for detecting an NG signal (calling tone), pseudo ringback tone generation unit 6 for generating a pseudo ringback tone to be transmitted to the calling side, and voice for transmitting a guidance voice message to the calling side. An operation unit 9 including a sending unit 7, a speaker, and the like, and generating a pseudo bell sound after a provisional incoming call; an operation unit 9 including various keys;
A display unit 10 includes a liquid crystal display or the like, a document reading unit 11 that reads and scans a document image, and a recording unit 12 that prints out facsimile-received images and the like on recording paper.

The main control unit 1 controls the operation of each unit in order to execute a facsimile communication operation. In the automatic telephone / fax switching mode, the external control unit (facsimile machine, telephone, or the like) transmits this facsimile. After a call is made to the device F and a predetermined ringing signal (ring tone) is transmitted from the circuit switch, the following operation control is performed.

That is, after detecting the call signal of 16 Hz for a predetermined number of times and closing the line L, the telephone network is connected to the C within a predetermined period.
The NG signal is detected by the CNG detection unit 5 or a call signal of 1300 Hz is sent from the facsimile communication network to 1300 Hz.
When the detection is performed by the detection unit 4, the operation is automatically switched to the facsimile reception mode. Within a predetermined period, CNG
When no signal or ringing signal of 1300 Hz is detected, the pseudo ringback tone generated by the pseudo ringback tone generator 6 is periodically transmitted to the calling side a predetermined number of times, and the pseudo bell sound generator 8 is output. Generates a pseudo-bell sound to prompt the telephone sets T1 and T2 to pick up the handset. If the handset is picked up, a call can be made with the calling party.

In the automatic telephone / fax switching mode, when the line L is closed and a temporary call is received, the voice transmitting unit 7
, A voice message such as "Please wait" can be sent. Next, the facsimile machine F
2 is shown in a time chart of FIG. Main control unit 1
When the call signal sent from the line switch is detected continuously for a predetermined number of times (here, twice), at that time, the line control unit 2 connects to the line L (closes the line) and automatically receives an incoming call. (Temporary call).

After such an automatic incoming call, a period t1 (here 3 seconds) for detecting a CNG signal from the telephone network and a period t2 (here 1 for 1300 Hz) for detecting a call signal of 1300 Hz from the facsimile communication network. ) Is provided separately so that a call of facsimile communication can be reliably detected. The CNG signal from the telephone network is 0.5
Since a signal of 1100 Hz that continues for 2 seconds is output at intervals of 3 seconds, the detection period t1 is set to 3 seconds or more, and a 1300 Hz calling signal from the facsimile communication network is automatically detected by the network side. Output for 2 seconds (until 10 seconds after confirmation of line connection), the detection period t2
May be set to about 1 second after the CNG signal detection period t1.

During the detection periods t1 and t2, if the calling side performs facsimile transmission, the ringback tone is unnecessary, and the pseudo ringback tone generator 6 does not generate the pseudo ringback tone. In addition, the pseudo bell sound is not generated from the pseudo bell sound generation unit 8 so that the calling of the facsimile communication can be reliably detected, and after the detection periods t1 and t2 are ended, the telephones T1 and T2 are prompted to respond. Sound a pseudo bell sound.

Here, the pseudo ring-back tone generating section 6 generates pseudo ring-back tones at two-second intervals, one second at a time, and the number of transmissions of the pseudo ring-back tones is sequentially counted by the main control section 1; When the count reaches a predetermined maximum number (here, four times), a protocol signal (for example, a CED signal or DIS signal) for starting a facsimile communication operation is transmitted to the calling side via the line L. .

The main controller 1 causes the pseudo-ring sound generator 8 to generate predetermined pseudo-ring sounds at regular intervals while transmitting the pseudo ring-back tone to the calling side. Here, as an example of a method of controlling the number of times the pseudo bell rings, a time t3 (in this case, 7 seconds) from the start of the generation of the pseudo ringback tone to the start of the pseudo bell ringing.
Shows an example that can be set in advance. That is, this time t
3 can be set to be shorter as the number of ringing of the pseudo bell is larger, and to be longer as the number of ringing of the pseudo bell is smaller.

The ringing of the pseudo bell and the transmission of the pseudo ringback tone as described above, even before the preset maximum number of times has been reached, when a response is detected on the telephone set T1, T2. The ringing of the bell and the transmission of the pseudo ringback tone are stopped, and the telephone T
1, T2 and the line L are connected. Here, C
In the detection period t1 of the NG signal and the detection period t2 of the call signal of 1300 Hz, if the handsets of the telephones T1 and T2 are picked up, the connection of the line L is switched to the telephones T1 and T2. In order to prevent frequent switching control, the switching to the telephones T1 and T2 may be made only after the detection periods t1 and t2 have ended.

FIG. 3 is a flowchart (steps 100 to 119) showing the basic operation of the facsimile machine F. By detecting a call signal from the circuit switch, 2
Although the bell rings (the telephones T1 and T2 do not ring), the bell ringing ends when the line L is closed (100, 101).

Next, after the line is closed, the process proceeds to a CNG signal detection period t1 (3 seconds). If a CNG signal is transmitted via the telephone network during this period, the handset of facsimile communication will be performed at this time. Start shake (102, 10)
3, 114-119). During the detection period t1, CNG
If the detection unit 5 does not detect a CNG signal,
The facsimile communication handshake is started at this time if a 1300 Hz paging signal is transmitted via a facsimile communication network during this period (t2, 1 second). 105,114
To 119).

However, during the detection period t2, 130
If the 0 Hz detection unit 4 does not detect the calling signal via the facsimile communication network, the transmission of the pseudo ringback tone is started, and at the time when the non-ringing period at the time t3 shown in FIG. Start ringing (106,
107). As long as the pseudo bell does not respond to the telephones T1 and T2, the pseudo bell rings by the operation of the operation unit 9 or the number of times set at the time of manufacture. That is, if the resident of a large house sets the number of times of ringing to the same maximum number as the pseudo ringback tone (time t3 = 0 in FIG. 2), the pseudo bell can continue to ring for a long time. ,
It is possible to avoid delay of picking up the handsets of the telephones T1 and T2, and conversely, if the handset can be picked up immediately even if the number of ringing of the pseudo bell is small, the ringing of the pseudo bell only a few times. You can set the number of times. This helps avoid unnecessary ringing of the false bell in the absence.

When the handset is placed on the calling side while the pseudo bell is ringing and a busy tone sent from the circuit switch is detected, the line L is cut off (108, 11).
8) When the handsets of the telephones T1 and T2 are picked up and an off-hook is detected, the pseudo bell is stopped to make a call with the calling side possible (109, 11).
2, 113).

On the other hand, the telephones T1, T
When the handset No. 2 is not picked up and the number of times of sending the pseudo ringback tone reaches the preset maximum number (110), the ringing of the pseudo bell is stopped (111),
CED signal for executing facsimile communication, DIS
A signal is transmitted, and if an appropriate protocol signal (DCS signal) is returned from the calling side within a predetermined time, a facsimile reception operation is performed. If no response is received, communication is performed at that time. The line L is cut off as an error (114 to 119).

[0026]

As will be understood from the above description, the facsimile apparatus with a telephone / fax switching function according to the present invention has the following effects. According to the first aspect, in the automatic telephone / fax switching mode, after a call signal is detected a predetermined number of times and the line is closed, in addition to a predetermined facsimile call signal from the telephone network, a predetermined call from the facsimile communication network is performed. Even when a signal is detected, the operation can be automatically switched to the facsimile reception mode.

Therefore, after receiving an automatic call, the CNG signal from the telephone network and the 1300H signal from the facsimile communication network
When both of the call signals of z are received and the handset of the telephone is picked up, the connection of the line is automatically switched to enable the telephone call. According to the second aspect, the detection period of the predetermined facsimile paging signal from the telephone network and the detection period of the predetermined paging signal from the facsimile communication network are separately provided, so that the facsimile via each network is provided. Communication calls can be reliably detected.

According to the third aspect, during the detection period of the predetermined call signal from the facsimile communication network, the pseudo ringback tone is not generated, so that 1300 Hz can be more reliably achieved.
Can be detected and no malfunction occurs.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of the configuration of a facsimile apparatus with a telephone / fax switching function according to the present invention.

FIG. 2 is a time chart showing an example of the operation of the facsimile apparatus with a telephone / fax switching function according to the present invention.

FIG. 3 is a flowchart illustrating an example of an operation procedure of the facsimile apparatus with a telephone / fax switching function according to the present invention.

[Explanation of symbols]

F: Facsimile apparatus with telephone / fax switching function according to the present invention T1: Attached telephone T2: Child telephone 1 ... Main control unit 2 ... Line control unit 3 ... Modem 4 ... 1300 Hz detection section 5 CNG detection section 6 Pseudo ringback tone generation section 8 Pseudo bell sound generation section t1 CNG signal detection period t2 1300 Hz ringing signal detection period

Claims (3)

[Claims] 1. A facsimile apparatus for generating a pseudo ringback tone and a pseudo bell sound after detecting a call signal and closing a line, wherein after the line is closed, a predetermined facsimile call signal from a telephone network; Alternatively, a facsimile apparatus with a telephone / fax switching function, which automatically switches to a facsimile reception mode when detecting a predetermined call signal from a facsimile communication network. 2. A system according to claim 1, wherein, after the line is closed, a period for detecting a predetermined facsimile calling signal from the telephone network and a period for detecting a predetermined calling signal from the facsimile communication network are: A facsimile machine with a telephone / fax switching function, which is provided separately. 3. A telephone / fax according to claim 2, wherein said pseudo ring-back tone is not generated during a period for detecting a predetermined call signal from a facsimile communication network after the line is closed. Facsimile machine with switching function.