JPH02305052A - Communication terminal equipment - Google Patents

Abstract

PURPOSE:To automatically execute the abbreviated dialing registration by bringing originating number information stored in a memory to abbreviated dialing registration at any time. CONSTITUTION:This equipment is provided with a bus line 13 for connecting a signal channel for transmitting a call control signal including originating number information and incoming number information and an information channel for transmitting an information signal to a signal switching network 1, and a memory 41 for storing the originating number information in its call control signal at the time of incoming call. Also, the originating number information stored in a memory 41 is brought to abbreviated dialing registration at any time. Accordingly, at every incoming call, the originating number information for specifying the outgoing side is transmitted to a communication equipment of the incoming side through its signal channel, and also, its originating number information is written in the memory 41. In such a manner, its originating number information can be brought to abbreviated dialing registration at any time and automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication terminal device suitable for application to, for example, a 15OH terminal device.

[Summary of the invention]

The present invention provides a communication terminal device suitable for application to, for example, an 15OH terminal device, in which a signal channel for transmitting a call control signal including calling number information and called number information and an information channel for transmitting an information signal are connected to a signal switching network. By providing a bus line that connects to a call control signal, and a memory that stores the calling number information in the call control signal when a call is received, the calling number information stored in the memory can be registered as speed dial at any time. This allows speed dial registration.

[Conventional technology]

For example, telephones that use switched lines are usually equipped with a speed dial registration function. In this case, by registering the telephone number of the desired destination in advance for each of the series of speed dials, it is possible to connect the line to the desired destination by simply operating a small number of keys.

[Problem to be solved by the invention]

However, conventionally, in order to register the speed dial, the user selects a phone number that is considered to be used relatively frequently from a phone number list, and then enters the selected phone number into the specified speed dial by key operation. There is an inconvenience that the registration operation is extremely complicated.

In view of the above, an object of the present invention is to enable automatic speed dial registration.

[Means to solve the problem]

The communication terminal device according to the present invention is, for example, as shown in FIG.
A signaling channel (e.g., l5
A bus line (13) that connects the ON D channel) and an information channel that transmits information signals to the signal switching network (1), and a memory (41) that stores calling number information in the call control signal when a call is received. The calling number information stored in the memory (41) can be registered as a speed dial at any time.

[Effect]

According to the present invention, each time there is an incoming call, the calling number information that identifies the calling party is transmitted to the communication terminal device of the called party via the signal channel, and the calling number information is stored in the memory (41). ) is written.

Therefore, the calling number information can be automatically registered as a speed dial at any time.

Further, for example, for each incoming call, the calling number information is sequentially stored in the memory (41) together with information indicating the frequency of incoming calls, and after a predetermined period of time, the calling number information is registered in order of speed dial in descending order of the frequency of incoming calls. It is also possible to perform speed dial registration, which is more useful.

〔Example〕

Hereinafter, one embodiment of a communication terminal device according to the present invention will be described with reference to the drawings. This example uses Ding SDN (Integr
atecl 5 services Digital Ne
The present invention is applied to a communication terminal of twork: Comprehensive Digital Wi service.

Figure 2 shows an example of the network configuration of the l5DN.
In the figure, (1) is an l5DN (hereinafter also simply referred to as a "network"), and this network (1) connects l5DN exchanges @ (2A), (2B), etc. located at each telephone office with a communication speed of 6
A 4 kbps B channel circuit switching network (3), a high speed circuit switching network (4) such as a communication speed of 384 kbps (HO channel), a packet switching network (5), and a common line signal network for transmitting control signals, etc. 6). The L5DN exchange (28) is connected to the user's home (28) via a subscriber line (7) consisting of a two-wire metallic wire.
DSU (Digital-data 5e) in 8A)
rvice Unit) (9A) is connected, and this D
DSU (9B), (9G) in parallel with S U (9A)
... is connected. Similarly, l5DN exchange (
2B) includes DSU (IOA), (IOB),
(IOC)... are connected, and these D S U
(9A), (9B)... and D S U (I
OA), (IOB)... are the network terminal devices (NT: Network Termina) of the network (1).
tion).

In the user's home (8A), a bus line (13) consisting of a 4-wire metallic wire having a transmission line (11) and a reception line (12) is led out from the DSU (9A), and this bus line (13) digital telephone (
14A), computer (14B), G4 type facsimile (14C) and terminal adapter (TA:
Terminal＾dapter) (140),
Non-15DN terminals (15) are connected in parallel in a 1:N wiring (bus wiring) format. This interface is l5D
This is the smallest basic interface defined by N, and this basic interface is logically divided into two B channels (16A), (16B) and one D channel (17 ), and the B channel (
16A) and (168) bidirectionally transmit various user information at a communication speed of 64 kbps, and the D channel (
17) bidirectionally transmits call control (originating, termination, etc.) information mainly for circuit switching and packet switching at a communication speed of 16 kbps. However, since the signals of these (2B+D) channels are physically transmitted on one bus line in a time-division manner, the nominal bit rate including control bits is 192K.
bps.

In addition, communication protocols, which are generally agreements regarding the exchange of control information between communication devices and communication networks, are conveniently classified into several layers based on appropriate functional units in order to facilitate the expansion of communication functions. One such classification method is 7, which has been standardized as the 03I (Open System Interconnection) reference model by the International Organization for Standardization (I5O).
There is a standard protocol model of hierarchy. And l5O
Figure 4 shows an example of a configuration in which N's user/network interfaces are layered into seven layers according to the standard protocol model.
(18) and (19) are connected to the network (1) via D S U (9^) and (108), respectively, and the terminal device (
18) are layer 1 (208), layer 2 (20B)
), layer 3 (20G) and layers 4 to 7 (200
), and rope (1) is layer 1 (21A).

It is composed of layer 2 (21B), layer 3 (21C) and layers 4 to 7 (210), and similarly the terminal device (19
) is also composed of seven layers (22A) to (22D).

Among these seven layers, protocols from layer 1 to layer 3 are defined for the user/wireless interface of l5ON, and layer 1 (physical layer) is the electrical protocol such as bin arrangement for connecting terminal equipment to the network. Layer 2 (data link layer) specifies procedures such as detection and recovery of transmission errors that occur during the communication process,
Layer 3 (network layer) specifies how to transfer data between terminal devices via a network.

When the information in layers 1 to 3 is S and ~S, respectively, the information SI in layer 1 is 100% pulse width AM
I (Alternate Mark Invers
ion) code, specifically low level “0”
The positive sentence is represented by a negative pulse, and the high level "1" is represented without a pulse. Furthermore, as shown in Fig. 5, the information S1 has 48 bits per frame (25 bits at 192 kbps).
FIG. 5A shows the frame structure when transmitted from the DSU to the terminal equipment (TE), and FIG. 5B shows the frame structure when transmitted from the terminal equipment to the DSU. . Further, in this FIG. 5, F is a framing bit, and L is a framing bit.

is the DC balance bit, D is the D channel bit, E is the D echo channel bit, FA is the auxiliary frame bit, N is the inverted bit of FA, Bl is the bit string of the first B channel, B2 is the bit string of the second B channel, A is a bit used for activation, S is a reserved bit, and M is a multi-framing bit.

Further, the layer 1 information St is classified as an INFO signal having the meanings shown in Table 1.

Table 1 The INFO signal shown in Table 1 is layer 1 as described below.
used to start.

In addition, the information S2 used in layer 2 has a more advanced frame format than the layer 1 signal S+, and the main frame types and contents of this layer 2 information S2 are summarized in Table 2. show.

Table 2 In Table 2, user information is transmitted via the B channel within the information transfer frame (I frame), but the
I frames and unnumbered frames (U frames) for I control are each transmitted via the D channel. The SABME command of the U frame is used to set the data link between the terminal equipment and the network side to multi-frame acknowledged operation mode, and this multi-frame acknowledged operation mode is a numbered information transfer frame in layer 2. This is an operation mode in which Eframes are transmitted in numerical order, and if a transmission error occurs, retransmission is performed for recovery. And Disc
The command is used to terminate the multi-frame acknowledged out-of-motion mode.

In addition, within the information S used in layer 3, the call control signal of the D channel is classified into the following messages, and each of these messages is used to realize circuit switching and packet switching in the B channel. Used for B channel link setup.

■Call setting message Calling number (telephone number, etc.) 9 Contains called party number, relay network selection information, transmission capability information, etc., and is used for call setting requests.

■Call setting acceptance message Used to notify that all call setting information has been received.

■Response message Used to notify the calling party that the called party has accepted the call.

■Disconnection message Used to request disconnection between terminal devices.

■Release message Used to request release of information channel, etc. after disconnection of information channel (B channel).

■Release completion message Used for release notification of information channels, etc.

Terminal bag using the above layer 1 to layer 3 information! (
When transmitting B channel information from TE to another terminal device via the network (ISDN), the communication operation between the transmitting terminal device and the network will be explained with reference to FIG. First, in step (101), for example, when the handset of the terminal device is taken off-hook by the operator, the terminal device transmits the <INFO1> signal (see Table 1) of layer 1 to the network side, and in response, the network The (INFO2> signal of layer 1 is sent back.Then, in step (103), the terminal device returns to the network side (INFO3)
When the signal is transmitted, a layer 2 activation display request signal is sent to the network side, and in step (104) the network sends a request signal to the terminal device side.
By transmitting the INFO4> signal, a layer 1 link is established, and layer 2 of the terminal device is activated.

Next, the terminal device receives a layer 3 dial setting request to set the called number, which is the number of the called party, by dialing, and in step (105) sends a layer 2 SABME command (see Table 2) to the network side. In response, the network displays a dial setting display, which is a preview of the dial setting, on the circuit system corresponding to Layer 3 of the network, and then performs step (10).
In step 6), the UA command is transmitted to the terminal device side. As a result, the dial setting is confirmed to indicate that the dial setting is possible in the circuit system corresponding to layer 3 of the terminal device, and the layer 2 link is established. can be transmitted, and Layer 3 is activated.

Next, in response to the dialing of the called number by the operator, the terminal device transmits a layer 3 call setup message including the calling number, called number, etc. to the network side in step (107). Call setup messages and the like are transmitted in layer 2 information transfer frames (I frames). When the network completes accepting the layer 3 call setup message, it proceeds to step (108).
) transmits a layer 3 call setup acceptance message to the terminal device.

Then, when the called number is vacant and the called party accepts the call, the network transmits a layer 3 response message to the terminal device side (step 108), making layer 3 information transmission possible on the B channel.

Subsequently, after the information transmission on the B channel is completed in step (110), for example, when the operator hangs up the receiver, the terminal device transmits a disconnection message from the network side layer 3 in step (111), and in response, When a layer 3 release message is transmitted from the network to the terminal device (step (112)), the terminal device transfers the layer 3 release message to the network side.
transmits a release completion message (step (113)).
), the used B channel is released.

Then, in response to a dial release request from the circuit system corresponding to layer 3 of the terminal device, the terminal device takes step (114).
, ) is the old SC command of network side layer 2 (see Table 2).
The network transmits the UA command to the terminal device (step (115)), thereby terminating the multi-frame acknowledged operation mode in layer 2. Next, in step (116), the network transmits a layer 1 (INFOO) signal indicating a no-signal state to the terminal device (step (116)).
116)), and in response the terminal device performs step (117)
), layer 1 <INFO indicating no signal status to the network side.
The communication operation ends by transmitting the O> signal.

During the operation of FIG. 6, steps (105) to (109) and steps (111) to (115) are respectively executed via the D channel for transmitting call control signals, and step (110)
The transmission is carried out via the B channel for information transmission.

Further, FIG. 1 shows the configuration of a control section of a digital telephone (14A) as a terminal device in the example of FIG. 2, and in this FIG. 1, (30) is a central processing unit (hereinafter referred to as CPU). This CPU (30) has a built-in working RAM, program ROM, etc. Also,
(31) indicates a system bus of CPU (30) consisting of a data bus, an address bus, a control bus, etc.
U (30) controls the digital telephone (14A) via the system bus (31).

(32) shows a communication control circuit that performs call control using D channel information, and when making a call, this communication control circuit (32)
generates a layer 3 call setup message including the called number that is input from the CPU (30) via the system bus (31), converts this message into a layer 1 signal, and supplies it to the multiplex circuit (34). do. When a call arrives, the communication control circuit (32) extracts the calling number N0 from the received layer 3 call setting message and sends it to the CPU (30).

(33) shows a serial/parallel conversion circuit for the B channel signal. During transmission, this conversion circuit (33) is connected to the CPU (30
) through the system bus (31) is converted into a serial signal and multiplexed (34).
supply to. In this case, since two B channels are provided, these two B channels are referred to as a B+ channel and a B2 channel, respectively. Also, during reception, the serial/parallel conversion circuit (33) converts the received serial Br channel and B2 channel signals into parallel signals, respectively.
This converted signal is sent to the CP via the system bus (31).
Supplied to U (30).

In addition, the multiplex circuit (34) forms a layer 1 signal (see FIG. 5) with a nominal bit rate of 192 kbps from the serial B, channel rBt channel, and D channel signals and additional signals at the time of transmission. D via the transmitter (35) and transmitting transformer (36)
It is sent to the receiving line (12) of the bus line (13) of S U (9^). On the other hand, when receiving a call, DSU (9A)
Via! The layer 1 signal transmitted from (1) is supplied to the separation circuit (39) via the transmission line (11) of the bus line (13), the reception transformer (37) and the receiver (38). This separation circuit (39) is the fifth
From a layer 1 signal having the format shown in the figure.

A communication control circuit (32) and a serial/parallel conversion circuit (33) separate the B channel signal and the D channel signal, respectively.
supply to.

Further, in FIG. 1, (40) is a first RAM.

(41) indicates the second RAM, and this first RAM (41) indicates the second RAM.
0) means that at least one calling number can be stored (none,
The second RAM (41) is designed to be able to store, for example, 100 calling numbers and the number of incoming calls. Also, (42
) indicates an input/output circuit, and a keyboard (43) is connected to the system bus (31) via this input/output circuit (42). This keyboard (43) is provided with a sending side redial key and a called side redialing key. The sending side redial key is used for conventional number dialing, and the called side redial key is used when redialing is performed on the called side as described later.

To explain the operation of the digital telephone (14A) in the example shown in Fig. 1, when a call is received, the communication control circuit (32) extracts the calling number N0 included in the received "call setting message" of the D channel for call control. Then, this extracted calling number N0 is
Send to P U (30). This CPU (30) writes the calling number N0 to the first RAM (40),
At the same time, the calling number N0 is stored in the second RAM (41
) is already written to.

When the calling number N0 is written in the RAM (41), the CPU (30) increments the number of incoming calls corresponding to the calling number N0 by one. Also, the calling number N0
is not written in the second RAM (41) and there is a blank space in the second RAM (41),
The CPU (30) writes the calling number N0 and the Chinese character "1" indicating the number of incoming calls into the blank space of the second RAM (41). On the other hand, if there is no blank space in the second RAM (41), the calling number N0 is not written.

After the information exchange corresponding to the incoming call is completed and the line is disconnected, if this digital telephone (14A) wants to connect the line to the calling party corresponding to the last incoming call via the network (1), The operator of this digital telephone (14A) operates the called side redial key on the keyboard (43). Correspondingly, CPU (30
) reads the calling number N0 written in the first RAM (40) and sends this calling number N0 to the communication control circuit (32).
), this communication control circuit (32) sends a "call setup message" for the D channel with that number N0 as the called party number.
generate. This "call setting message" is converted into a layer 1 signal and transmitted to the l) side, thereby establishing a line between the digital telephone (14A) and the calling party corresponding to the last incoming call. be done.

As described above, this example has the advantage that the called party can redial the calling party corresponding to the last incoming call with a single touch.

In addition, in this example, when a predetermined period of time has elapsed, the second R
Speed dials are registered in descending order of the number of incoming calls from among the calling numbers written in A M (41) (that is, in descending order of the incoming frequency). Specifically, when the operator inputs a predetermined command from the keyboard (43), the CPU (30) loads the second RAM (
, H), the calling numbers are read out in descending order of the frequency of incoming calls, and abbreviated codes are assigned to each of the calling numbers. Therefore, according to this example, there is an advantage that speed dialing can be automatically registered.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and that various configurations can be adopted without departing from the gist of the present invention.

For example, each time there is an incoming call, a desired one of the received caller number information may be registered as a speed dial.

〔Effect of the invention〕

According to the present invention, there is the advantage that speed dial registration can be performed automatically.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram of the main parts showing an embodiment of the present invention, Fig. 2 is a block diagram showing the l5DNO network configuration, and Figs. 3 to 6 are diagrams for explaining the l5DN, respectively. It is.

(1) is l5DN (network), (9A) is DSU, (1
3) is a bus line, (144) is a digital telephone, (4)
0) is the first RAM, (41) is the second RAM, (43
) is the keyboard.

Claims (1)

[Scope of Claims] A bus line that connects a signal channel for transmitting a call control signal including calling number information and called number information and an information channel for transmitting an information signal to a signal switching network; A communication terminal device comprising: a memory for storing calling number information; and the calling number information stored in the memory can be registered as a speed dial at any time.