JPH10224452A - Communication terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the increase of communication costs by effectively utilizing a private communication network. SOLUTION: An inside/outside line correspondence table 3a mutually correspondently registers outside and inside line numbers set to the other communication terminal equipment connected to the same private communication network. When the origination of call is instructed while designating any outside line number, it is discriminated by an extension number discriminating means 1a whether that outside line number is stored in the inside/outside line correspondence table 3a or not and when that outside line number is stored in the inside/ outside line correspondence table 3a, the origination of call is performed by a call origination processing means 1b and a dial sending part 10 while using the extension number stored in the inside/outside line correspondence table 3a corresponding to the outside line number.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a facsimile machine accommodated in a private communication network connected to a public communication network and capable of performing communication using both the public communication network and the private communication network. The present invention relates to a communication terminal device such as a device or a telephone.

[0002]

2. Description of the Related Art Generally, a private communication network such as an in-house communication network is also connected to a public communication network. Therefore, communication between communication terminal devices such as telephone terminals and facsimile terminals accommodated in a private communication network can be either external communication via a public communication network or internal communication via only a private communication network. Can also be done. Therefore, a communication terminal device accommodated in such a private communication network has a so-called external number for receiving a call via a public communication network,
A so-called extension number for receiving a call only via the private communication network is prepared.

A conventional communication terminal device such as a facsimile device or a telephone transmits a dial signal corresponding to a dial number designated by a user to a communication network when making a call. For this reason, when the user specifies an external line number, even if the destination is a communication terminal device capable of performing internal line communication, external line communication is performed via a public communication network and external line communication is performed. However, there is a problem that extra communication costs are required.

Further, in the case of a communication terminal device having a one-touch dial function or abbreviated dial function, if an external line number is registered in association with a one-touch button or abbreviated number, the user can perform extension communication at the destination. Even if the user knows this, if the one-touch dial function or the abbreviated dial function is used, an outside line is transmitted and an outside line communication is performed, and there is a problem that extra communication cost is required.

[0005]

As described above, the conventional communication terminal apparatus originates a call by transmitting a dial signal corresponding to a designated dial number to a communication network. In a communication terminal device capable of performing communication using both the network and the public communication network, even if the communication partner can perform communication using only the private communication network, the communication terminal device may use the public communication network. When public network transmission information for performing transmission via the public network is specified, communication via the public communication network is performed, resulting in an extra communication cost.

Further, when the conventional communication terminal device has a simple calling function such as a one-touch dial function or a speed dial function, the calling information specified at the time of registration is directly associated with the simple calling information such as a one-touch button or abbreviated number. If the public network transmission information is registered, communication via the public communication network is performed every time a transmission is designated by the simple transmission function, and extra communication costs are incurred. There was a defect that would.

The present invention has been made in view of these circumstances, and it is an object of the present invention to provide a communication terminal device capable of effectively using a private communication network and suppressing an increase in communication cost. It is in.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a transmission instruction for designating public network transmission information such as an outside line number for transmitting a call via a public communication network. If the communication terminal device corresponding to the designated public network transmission information can communicate using both the public communication network and the private communication network, the designated public network Private network transmission information for transmitting to the communication terminal device corresponding to the transmission information via the private communication network, for example, public network transmission information for transmitting to another communication terminal device via the public communication network, and For example, an extension number judging unit or the like for making a judgment by referring to originating information storage means such as an internal / external line correspondence table for storing private network transmission information for transmission via a private communication network in association with each other. When the private network transmission information is determined by the private network transmission information determining means and the private network transmission information determining means, a call is transmitted through the private communication network using the determined private network transmission information. , For example, transmission processing means and transmission means comprising a dial transmission unit.

[0009] By adopting such means, even if a transmission instruction in which public network transmission information is specified is issued,
If the communication terminal device corresponding to the designated public network transmission information can perform communication using the private communication network, a private network for transmitting the communication terminal device via the private communication network. The transmission information is determined by referring to, for example, transmission information storage means, and transmission is performed via the private communication network using the private network transmission information.

Another aspect of the present invention is a simple transmission such as a speed dial memory for storing transmission information such as an outside line number and an extension number in association with predetermined simple transmission information such as a one-touch button or an abbreviated number. The designated information storage means, and in response to a transmission instruction having been made by designating the simple transmission information, the transmission information stored in the simple transmission designation information storage means in association with the designated simple transmission information. For example, a simplified dialing means such as abbreviated dialing means for making outgoing calls, and an abbreviated dialing registration receiving means for receiving designation of outgoing information stored in the simplified outgoing designation information storage means and simplified outgoing information associated with the outgoing information. The simple transmission designation receiving means and the transmission information received by the simple transmission designation receiving means transmit via the public communication network. For example, in response to the public network transmission information such as an outside line number, the communication terminal device corresponding to the designated public network transmission information performs communication using both the public communication network and the private communication network. If it can be performed, private network transmission information such as an extension number for transmitting via the private communication network to the communication terminal device corresponding to the designated public network transmission information, for example, other For example, an internal / external line correspondence table for storing the public network transmission information for transmitting to the communication terminal device via the public communication network and the private network transmission information for transmitting via the private communication network in association with each other A private network transmission information determining means such as an extension number determining means for making a determination with reference to the transmission information storing means of the private network, and a private network transmission information determined by the private network transmission information determining means. Storing the determined private network transmission information in the simplified transmission designation information storage means in association with the simplified transmission information received by the simplified transmission designation accepting means; And with.

[0011] By adopting such means, even when the simple outgoing information registration in which the public network outgoing information is designated is performed, the communication terminal device corresponding to the designated public network outgoing information establishes the private communication network. If it is possible to perform communication using the private network, the private network transmission information for transmitting to the communication terminal device via the private communication network is determined by referring to, for example, transmission information storage means. Transmission information is registered as simple transmission information.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a functional block diagram showing a main configuration of a facsimile apparatus to which the communication terminal device according to the present embodiment is applied. The facsimile apparatus of the present embodiment is
It is assumed that the terminal is connected to a private communication network connected to a public communication network and used.

As shown in FIG. 1, a facsimile apparatus according to this embodiment includes a CPU 1, a ROM 2, a RAM 3, an image memory 4, an encoding / decoding unit 5, an operation unit 6, a sub processor 7, a scanner 8, a printer 9, a dial 9, It comprises a sending unit 10, a modem 11, a transformer 12, a bell detecting unit 13, and a timer 14, among which a CPU 1, a ROM 2,
M3, image memory 4, encoding / decoding unit 5, operation unit 6,
Sub processor 7, dial sending unit 10, modem 11,
The bell detector 13 and the timer 14 are connected to the system bus 15
Are connected to each other. The scanner 8 and the printer 9 are connected to the sub-processor 7, respectively.

The CPU 1 realizes an operation as a facsimile apparatus by performing control processing for comprehensively controlling each part of the facsimile apparatus based on a control program stored in the ROM 2. Note that this CPU 1
Is realized by operating based on the control program stored in the ROM 2, in addition to the well-known general ones in the facsimile machine, when an external line number is specified at the time of outgoing call, the specified An extension number judging means 1a for judging the extension number set in the communication terminal device together with the outside line number, and a transmission process for making a call using the extension number when the extension number is judged by the extension number judging means 1a. 1b.

The ROM 2 stores a control program for the CPU 1 and the like.

The RAM 3 is for storing various information necessary for the CPU 1 to perform various processes. A partial area of the RAM 3 is used to store an outside line number and an extension number assigned to another communication terminal device connected to the same private communication network as the facsimile apparatus, in correspondence with each other. Used as a table 3a.

The image memory 4 temporarily stores received image data and image data waiting to be transmitted.

The encoding / decoding section 5 performs encoding processing for redundancy compression on image data and decodes image data that has been encoded for redundancy compression. is there.

The operation unit 6 includes a key input unit for receiving various instruction inputs from the user to the CPU 1 and a display unit for displaying various information to be notified to the user under the control of the CPU 1. It had.

The sub-processor 7 controls the scanner 8 and the printer 9 under the control of the CPU 1.

The scanner 8 reads a transmission original and generates image data indicating the transmission original.

The printer 9 prints an image represented by image data on a recording sheet.

The dial sending unit 10 transmits a call to the CPU
A dial signal corresponding to the dial number designated from No. 1 is generated and transmitted to the communication line C.

The modem 11 modulates image data to generate facsimile transmission data, and sends out the generated facsimile transmission data to the communication line C via the transformer 12. The modem 11 is connected to the communication line C
, And reproduces image data by demodulating facsimile transmission data provided via the transformer 12.

The bell detector 13 detects a call signal arriving via the communication line C at the time of an incoming call.

The timer 14 performs various timing operations.

Next, the operation of the facsimile apparatus configured as described above will be described. The operation related to the normal facsimile transmission and reception is the same as that of the conventional facsimile apparatus, and thus the description is omitted, and the processing at the time of transmission will be described here.

First, the user sets the outside line number and the external line number set for another arbitrary communication terminal device (for example, a communication terminal device that frequently becomes a destination) connected to the same private network as the facsimile device. Perform the registration of the extension number. When this registration operation is performed, the CPU 1
An external line number and an extension number specified for one communication terminal (destination) are associated with each other as shown in FIG.
It is stored in the inside / outside line correspondence table 3a.

In response to a predetermined operation such as setting of a document on the scanner 8 or designation of execution of polling reception by a predetermined instruction operation on the operation unit 6,
The CPU 1 starts a transmission process as shown in FIG.

When the calling process is started, the CPU 1 first accepts an input of a dial number of a call destination (direct input, input by specifying abbreviated number, or input of one-touch button) (step ST1). When the input of the dial number has been accepted, the process waits for the start key provided on the operation unit 6 to be pressed (step ST2).

If the start key is pressed, the CPU 1 subsequently determines whether or not the dial number accepted in step ST1 (hereinafter referred to as a designated dial number) is an outside line number (step ST3). . The determination as to whether the designated dial number is an outside line number is based on the fact that if the private communication network uses a special number (for example, “0”) to designate an outside line, the first digit of the designated dial number is It can be performed by determining whether or not it matches the special number. Since the special number for designating an outside line transmission may differ depending on the network, an area for storing the special number for designating the outside line transmission is provided in the RAM 3 and the special number for designating the outside line transmission can be arbitrarily set by the user. It is good to be able to set to.

If the designated dial number is an outside line number, the CPU 1 subsequently determines whether or not extension outgoing call prohibition has been designated (step ST4). The extension transmission prohibition designation is, for example, a setting state of a mode that is valid only for one transmission, and the setting of the mode is performed before the start of the transmission processing. In a normal state in which an instruction operation for designating extension call prohibition is not performed, the mode is designated as extension call permission. If the extension is permitted, the CPU 1 searches the inside / outside line correspondence table 3a for the designated dial number (step ST5), and determines whether or not the designated dial number is stored in the inside / outside line correspondence table 3a. Is determined (step ST6). The processing of steps ST3 to ST6 is performed by the extension number determining means 1a.

If the designated dial number is stored in the inside / outside line correspondence table 3a, the CPU 1 reads out the extension number associated with the designated dial number in the inside / outside line correspondence table 3a by the transmission processing means 1b. Then, it controls the dial sending unit 10 to transmit the extension number (step ST7). In response to this, dial sending unit 1
0 generates a dial signal corresponding to the designated extension number and sends it out to the communication line C. Thus, the extension is transmitted even though the outside line number is specified.

On the other hand, when the designated dial number is not stored in the inside / outside line correspondence table 3a, when the designated dial number is an extension number, or when extension prohibition is designated, the CPU 1 designates the designated number. The dial sending unit 10 is controlled to transmit a dial number (step ST8). In response, the dial sending unit 10
A dial signal corresponding to the designated dial number is generated and transmitted to the communication line C. Thus, when the designated dial number is an outside line number, an outgoing call is made, and when the designated dial number is an inside number, an outgoing call is made. That is, when the designated dial number is not stored in the inside / outside line correspondence table 3a, a normal calling operation as in the related art is performed.

When the transmission in step ST7 or ST8 is completed, the CPU 1 determines whether or not a response is made within a certain period thereafter (step ST9).
If no response is received within a certain period, it is determined whether or not it is necessary to redial (step ST1).
0). Then, if it is necessary to redial, the processing after step ST3 is repeated.

On the other hand, when a response within a predetermined period is detected in step ST9, or when there is no need for redialing in step ST10, the CPU 1 terminates the transmission processing, and transmits image data and polling reception processing. Shift to other processing such as.

As described above, according to the present embodiment, when both an outside number and an extension number are set for another communication terminal device (destination), the outside number and the extension number correspond to each other. In addition, it can be registered in the inside / outside line correspondence table 3a. Then, when an outgoing call is instructed by specifying an outside line number, if an extension number corresponding to the specified outside line number is registered in the inside / outside line correspondence table 3a, the extension is transmitted using the outside line number. Will be

Therefore, even if the user inadvertently enters an external number or enters an external number without noticing that the extension communication can be performed, the extension is transmitted to perform the internal communication. Therefore, it is possible to prevent unnecessary use of the public communication network and prevent extra communication cost from being applied.

According to this embodiment, when the designated dial number is an outside line number, even if the extension number corresponding to the outside line number is stored in the inside / outside line correspondence table,
If extension prohibition has been designated, outside line transmission is performed according to the designated dial number.

Therefore, even when a call is made to a communication terminal device whose extension number is stored in the extension / external line correspondence table 3a, the extension call prohibition designation is performed so that the call cannot be transmitted via the public communication network. Outgoing calls can be made. As a result, an outside line can be intentionally transmitted, for example, because the private communication network is congested.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
An embodiment will be described.

FIG. 4 is a functional block diagram showing the main configuration of a facsimile apparatus to which the communication terminal device according to the present embodiment is applied. 1 are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in this figure, the facsimile apparatus of the present embodiment comprises an image memory 4,
Decoding section 5, operation section 6, sub-processor 7, scanner 8, printer 9, dial transmission section 10, modem 11, transformer 12, bell detection section 13, timer 14, CPU 21
And a RAM 22. Of these, the ROM 2, the image memory 4, the encoding / decoding unit 5, the operation unit 6, the sub-processor 7, the dial transmission unit 10, the modem 11, the bell detection unit 13, the timer 14, the CPU 21, ROM 22 and R
The AMs 23 are connected to each other via a system bus 15. The scanner 8 and the printer 9 are connected to the sub-processor 7, respectively.

That is, the facsimile apparatus of the present embodiment is the same as the facsimile apparatus of the first embodiment.
CPU 21 in place of U1, ROM2 in place of ROM2
2 and a RAM 23 in place of the RAM 3.

The CPU 21 implements an operation as a facsimile apparatus by performing control processing for comprehensively controlling each unit of the facsimile apparatus based on a control program stored in the ROM 22. Note that this CP
U21 operates based on a control program stored in the ROM 2. Control means realized by abbreviated dial registration receiving means 21a, extension number determining means 21b, Dial registration means 21c and abbreviated dial transmission means 2
1d.

Here, the abbreviated dial registration receiving means 21a
Is for accepting a speed dial registration instruction made by an instruction operation on the operation unit 6. Extension number determining means 21
b, when the dial number accepted as the one to be registered for the abbreviated dialing by the abbreviated dial registration accepting means 21a is an external number, the determination of the extension number set in the communication terminal device together with the specified external number is performed. Is what you do. When the extension number is determined by the extension number determining means 21b, the abbreviated dial registration means 21c performs processing for registering the extension number in the abbreviated dial. The abbreviated dial transmission means 21d performs a transmission with a dial number registered in the abbreviated dialing in association with the designated abbreviated number when the abbreviated dial transmission is instructed.

The ROM 22 stores a control program for the CPU 21 and the like.

The RAM 23 is for storing various information necessary for the CPU 21 to perform various processes. Also, a partial area of the RAM 23 is the first area.
In addition to the inside / outside line correspondence table 3a similar to the embodiment, it is used as a speed dial memory 23a for storing dial numbers registered in speed dial for the speed numbers in association with speed numbers.

Next, the operation of the facsimile apparatus configured as described above will be described. The operation related to the normal facsimile transmission and reception is the same as that of the conventional facsimile apparatus, and therefore the description is omitted, and the processing of the abbreviated dial registration will be described here.

First, the administrator of the facsimile apparatus performs an operation of registering an external line number and an extension number set for another arbitrary communication terminal connected to the same private network as the facsimile apparatus. deep. When this registration operation is performed, the CPU 1 associates the outside line number and the extension number designated for one communication terminal device (destination) with each other as shown in FIG.
To be stored.

On the other hand, a general user of the facsimile apparatus instructs to perform abbreviated dial registration, for example, by performing a predetermined instruction operation on the operation unit 6 when performing abbreviated dial registration. Then, the CPU 21 starts a speed dial registration process as shown in FIG.

When the CPU 21 starts the abbreviated dial registration process, first, it receives an input of the abbreviated number to be registered (step ST11). When the input of the abbreviated number is completed, the input of the dial number to be registered next is received (step ST12). Note that the above step S
The processing of T11 and step ST12 is performed by the abbreviated dial registration receiving means 21a.

When the input of the dial number is completed, the CPU 21 subsequently determines whether or not the dial number (hereinafter, designated dial number) received in step ST12 is an outside line number (step ST12). Step S
T13). The determination as to whether the designated dial number is an outside line number is based on the fact that if the private communication network uses a special number (for example, “0”) to designate an outside line, the first digit of the designated dial number is It can be performed by determining whether or not it matches the special number. Note that special numbers for specifying outside line calling may differ depending on the network,
It is preferable that an area for storing a special number for designating an outside line is provided in the RAM 3 so that the user can arbitrarily set a special number for designating an outside line.

If the designated dial number is an outside line number, the CPU 21 searches the inside / outside line correspondence table 3a for the designated dial number (step ST14), and the designated dial number is not stored in the inside / outside line correspondence table 3a. It is determined whether or not this is the case (step ST15). Note that the processing of steps ST13 to ST15 is performed by the extension number determining means 21b.

If the designated dial number is stored in the inside / outside line correspondence table 3a, the user is informed, for example, by display, that there is an extension number corresponding to the designated dial number (step ST16), and the extension number is displayed. Is received (step ST17).

When the user is notified that there is an extension number corresponding to the designated dial number, the user is asked whether the extension number can be registered by abbreviated dialing or the external number must be registered by abbreviated dialing. Judge and specify whether to allow extension number registration. If the extension number registration is permitted, the CPU 21 proceeds to the extension / external line correspondence table 3a.
Reads the extension number associated with the designated dial number, and registers the extension number in the abbreviated dial memory 23a in association with the abbreviated number accepted in step ST11 (step ST18). Thus, the extension number is registered in the speed dial even though the outside line number is specified.

On the other hand, if the designated dial number is not stored in the inside / outside line correspondence table 3a, if the designated dial number is an extension number, or if extension number registration is not permitted, the CPU 21 Registers the designated dial number in the abbreviated dial memory 23a in association with the abbreviated number accepted in step ST11 (step ST19).

The processing in steps ST16 to ST19 is performed by the abbreviated dial registration means 21c.

As described above, according to the present embodiment, when both an outside line number and an extension number are set for another communication terminal device, the outside line number and the extension number are associated with each other and the inside and outside numbers are associated with each other. It is possible to register in the line correspondence table 3a.
When an outside line number is designated as a dial number to be registered for abbreviated dialing, if the extension number corresponding to the designated outside line number is registered in the inside / outside line correspondence table 3a, the extension number is abbreviated.

Therefore, even if the user inadvertently designates an outside line number or specifies an outside line number without knowing the extension number, the extension number is registered as abbreviated dialing as possible. It is possible to perform the extension communication by performing the extension transmission as much as possible, and it is possible to prevent unnecessary use of the public communication network and prevent extra communication cost from being applied.

According to the present embodiment, even if there is an extension number associated with the designated dial number, the outside line number can be registered by abbreviated dialing by the user's selection. It is possible to cope with a situation that does not become necessary.

The present invention is not limited to the above embodiments. For example, in each of the above embodiments, the communication terminal device of the present invention is applied to a facsimile device, but the present invention can be applied to other devices such as a telephone.

In each of the above-described embodiments, the outgoing line from the terminal is used by connecting to a private communication network which makes a call to the public communication network by making a special determination to the dial number and making a decision on the network side. However, for example, a communication line accommodated in a public communication network and a communication line accommodated in a private communication network are connected to each other, and a configuration is adopted in which these communication lines are selectively used. As described above, the connection form to the public communication network and the private communication network may be arbitrary.

In the first embodiment, the inside / outside line correspondence table 3a is provided, and the extension number corresponding to the designated outside line number is determined based on the information registered therein. If the network has information indicating the extension number and extension number of each terminal accommodated in the network, it is also possible to determine the extension number corresponding to the designated extension number based on the information. it can. In the case of the above-described embodiment, even if the destination is connected to the same private communication network, if the external line number and the internal line number are not registered in the internal / external line correspondence table 3a, only the external line is transmitted when the external line number is specified. Can not do. On the other hand, with the configuration described above, it is possible to reliably perform the extension transmission when transmitting to most of the communication terminal devices connected to the private communication network.

In the first embodiment, extension prohibition is designated by mode setting. However, other means such as designation by a special number may be used. If the extension is prohibited from being designated by a special number, a number excluding the special number for prohibiting the extension from the designated dial number is used for the transmission.

In the second embodiment, the present invention is applied to abbreviated dial registration. However, the present invention is also applicable to other simple call registration such as one-touch dial registration and electronic telephone directory registration. Can be applied.

In addition, various modifications can be made without departing from the gist of the present invention.

[0068]

According to the present invention, a communication terminal corresponding to a designated public network transmission information in response to a transmission instruction designating public network transmission information for transmitting via a public communication network is issued. If the device is capable of performing communication using both the public communication network and the private communication network, the designated public network transmission information is transmitted to the corresponding communication terminal device via the private communication network. For example, public network transmission information for transmitting to the other communication terminal device via the public communication network and private network transmission information for transmitting via the private communication network correspond to each other. Private network transmission information determining means for determining by referring to transmission information storage means for attaching and storing, and, when the private network transmission information is determined by the private network transmission information determining means, the determined private network Outgoing call And a transmitting means for performing a call via the private communication network using a broadcast.

According to another aspect of the present invention, there is provided a simple transmission designation information storage means for storing transmission information in association with predetermined simple transmission information, and a transmission instruction in which the simple transmission information is designated. Responsive to the designated simple transmission information, a simple transmission means for making a call using the transmission information stored in the simple transmission designation information storage means, and a transmission information stored in the simple transmission designation information storage means. And simple transmission designation receiving means for receiving designation of simple transmission information corresponding to the transmission information, and the transmission information received by the simple transmission designation receiving means is public network transmission information for transmitting via the public communication network. Accordingly, the communication terminal device corresponding to the designated public network transmission information can perform communication using both the public communication network and the private communication network. Then, private network transmission information for transmitting to the communication terminal device corresponding to the designated public network transmission information via the private communication network is transmitted to another communication terminal device via the public communication network. Private network transmission information determining means for determining by referring to transmission information storage means for storing the public network transmission information for transmitting and the private network transmission information for transmitting via the private communication network in association with each other; When the private network transmission information is determined by the private network transmission information determining means, the determined private network transmission information is associated with the simple transmission information received by the simple transmission specification receiving means, and the simple transmission specification A simple transmission registration means for storing the information in the information storage means.

As a result, the communication terminal device can effectively use the private communication network to suppress an increase in communication cost.

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating a main configuration of a facsimile apparatus to which a communication terminal device according to a first embodiment of the present invention is applied.

FIG. 2 is a diagram schematically showing a registration status of an outside line number and an extension number in an inside / outside line correspondence table 3a in FIG. 1;

FIG. 3 is a flowchart showing a processing procedure of a CPU 1 in a transmission process.

FIG. 4 is a functional block diagram showing a main part configuration of a facsimile apparatus to which a communication terminal device according to a second embodiment of the present invention is applied.

FIG. 5 is a flowchart showing a processing procedure of a CPU 21 at the time of abbreviated dial registration processing.

[Explanation of symbols]

 1, 21 ... CPU 1a ... extension number determination means 1b ... transmission processing means 21a ... speed dial registration accepting means 21b ... extension number determination means 21c ... speed dial registration means 21d ... speed dial transmission means 2, 22 ... ROM 3, 23 ... RAM 3a ... inside / outside line correspondence table 23a ... short dial memory 4 ... image memory 5 ... encoding / decoding unit 6 ... operation unit 7 ... sub processor 8 ... scanner 9 ... printer 10 ... dial sending unit 11 ... modem 12 ... trans 13 … Bell detector 14… Timer

Claims (5)

[Claims] 1. A communication terminal device capable of performing communication using both a public communication network and a private communication network, wherein a transmission instruction in which public network transmission information for transmitting via the public communication network is designated. If the communication terminal device corresponding to the designated public network transmission information can perform communication using both the public communication network and the private communication network, Private network transmission information determining means for determining private network transmission information for transmitting to the communication terminal device corresponding to the designated public network transmission information via the private communication network; A communication terminal device comprising: transmission means for making a call via the private communication network using the private network transmission information determined when the transmission information is determined. 2. A simple transmission designation information storage for storing transmission information in association with predetermined simple transmission information in a communication terminal device capable of performing communication using both a public communication network and a private communication network. Means for transmitting a call using the transmission information stored in the simple transmission designation information storage means in association with the designated simple transmission information in response to a transmission instruction specifying the simple transmission information. A simple transmission means for receiving the transmission information stored in the simple transmission designation information storage means and a specification of the simple transmission information corresponding to the transmission information; and a transmission received by the simple transmission specification reception means. In response to the information being public network transmission information for transmitting via the public communication network, a communication terminal device corresponding to the specified public network transmission information If it is possible to perform communication using both the public communication network and the private communication network, a call is transmitted via the private communication network to a communication terminal device corresponding to the designated public network transmission information. Private network transmission information determining means for determining private network transmission information, and when the private network transmission information is determined by the private network transmission information determining means, the determined private network transmission information is designated as the simple transmission designation. A communication terminal device comprising: a simple transmission registration unit that stores the simple transmission designation information storage unit in association with the simple transmission information received by the reception unit. 3. A public network transmission information for transmitting to another communication terminal device capable of performing communication using both a public communication network and a private communication network through the public communication network, and the private communication. Transmission information storage means for storing private network transmission information for transmitting via a network in association with each other, and the private network transmission information determining means, based on the information stored in the transmission information storage means, The communication terminal device according to claim 1, wherein the communication terminal device determines network transmission information. 4. The transmission means, when a predetermined extension transmission prohibition instruction is issued and public network transmission information is designated, performs transmission via the public communication network using the public network transmission information. The communication terminal device according to claim 1. 5. The simple call registration means, wherein when a predetermined extension number registration prohibition instruction is issued and registration of public network call information is instructed, the simple call reception information received by the simple call designation receiving means is received. The communication terminal device according to claim 2, wherein the communication terminal device stores the simple transmission designation information storage unit in association with information.