JP2006203789A - Network terminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a network terminating device for terminating both of a subscriber line and a wide-band transmission path or the wide-band transmission path, and for interfacing a desired terminal to receive provision of a communication service via the subscriber line or the wide-band transmission path, in which a telephone device connected via an optical transmission path of an access line is designed to function as a fixed telephone device without changing basic configuration in hardware. <P>SOLUTION: The network terminating device for terminating a store-and-forward network or a message switching network via a transmission path is configured by providing a first terminating means for interfacing between a terminal fixed to the transmission path and added with a telephone number and the transmission path, relating to a call setup of a call in which a special terminal disposed on the store-and-forward network or the message switching network becomes an incoming call destination or a transmission source, and a transmission of a telephone conversation signal of the call. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to both a subscriber line connected to a circuit switched network and a broadband transmission line used for access to the Internet or the like, or terminates the broadband transmission line, and a desired terminal is connected to the subscriber line or broadband. The present invention relates to a network terminating device that has an interface for receiving communication services via a transmission line.

  In recent years, broadband access networks used for access to the Internet and the like are being rapidly developed. In addition, such an optical fiber suitable for broadbandization is hardly affected by crosstalk and interference with a telephone line or ISDN regardless of the distance from the nearest exchange, and is about 100 megabits / second. FTTH (Fiber To The Home) and FTTB (Fiber to The) are available under the fierce competition between not only communication equipment manufacturers but also communication providers. Building) is rapidly spreading.

FIG. 2 is a diagram illustrating a configuration example of an apparatus provided in a subscriber's house into which an optical fiber is drawn.
In the figure, an optical access line termination device 32 connected to one end of an optical access line 31 and a terminal adapter (VoIP-TA) 34 connected to one end of a subscriber line 33 are installed in the subscriber's home. The The optical access terminal device 32 is connected to an information terminal such as a personal computer (not shown). Further, the terminal adapter 34 described above is connected to a specific port of the optical access termination device 32, and a telephone 35 is connected to the terminal adapter 34.

  On the other hand, the other end of the subscriber line 33 is connected to a corresponding port (subscriber circuit) of the subscriber line switch 36 constituting the circuit switching network. A predetermined communication path is connected to the Internet 37 connected to the subscriber line switch 36 via a predetermined access point (not shown) with the optical access line termination device 32 via the optical access line 31 described above. A SIP (Session Initiation Protocol) server 38 is provided.

In the conventional example having such a configuration, the telephone 35 is used for providing a communication service as an IP telephone by connecting the respective units as follows.
The terminal adapter 34 generates a “number registration request” in response to an operation performed by the operator on the telephone 35, and gives the “number registration request” to the optical access line termination device 32. The “number registration request” includes “the telephone number“ 0AB to J ”given to the telephone set 35 under the number plan of the circuit switching network” and the “serial number of the telephone set ( It can be replaced with a serial number or other unique identification information.) ”.

The optical access line termination device 32 delivers the “number registration request” to the SIP server 38 via the optical access line 31 (FIG. 3 (a) (1)).
The SIP server 38 has a database and searches the database on the basis of these telephone numbers “0AB to J” and serial numbers (FIGS. 3A and 2). Further, if the SIP server 38 cannot find the corresponding record in the search process, the telephone number “0AB-J” and the serial number included in the “number registration request” and the telephone 35 A new record including a unique IP telephone number “050...” Assigned to the ID is generated, and the record is added to the above-described database. Further, the SIP server 38 generates a “number registration response” indicating the process and result of such processing, and sends the “number registration response” to the optical access line termination device 32 via the optical access line 31. It is sent out (FIG. 3 (a) (3)).

The series of processes described above may be realized as follows, for example.
The “number registration request” described above is configured by including “the MAC address unique to the optical access line termination device 32 or the terminal adapter 34” instead of the telephone number “0AB to J” and the serial number described above. Is done.
Further, the “number registration request” is directly transferred to the network terminating device server 38 or the corresponding database (FIG. 3 (b) (1)).

The telephone numbers “0AB to J” to be included in the above-described new record are given by the above-described database (FIG. 3 (b) (2)), the telephone numbers “0AB to J” and the IP telephone numbers “050. "Number registration response" including "" is delivered to the optical access line termination device 32 (FIGS. 3B and 3).
By the way, when the telephone 35 makes a call to “IP telephone terminal (not shown) accommodated in the Internet 37”, the respective units are linked as follows.

When the IP telephone number “050...” Is set by the operator of the telephone 35, the terminal adapter 34 is addressed to the SIP network terminator server 38 via the optical access line 31 and “to the IP telephone number“ 050. At the same time, the “number registration request” including the above-described serial number is delivered (FIG. 4 (1)).
The SIP server 38 searches the above-described database on the basis of the pair of the IP telephone number “050...” And the serial number included in the “number registration request”, and determines whether there is a regular record including the pair. Then, the telephone 35 is authenticated (FIG. 4 (2)).

Further, the SIP server 38 delivers a “number registration response” indicating the authentication result to the optical access line termination device 32 via the optical access line 31 (FIG. 4 (3)). If the telephone 35 is identified as a “regular telephone” based on the above-described authentication, the “number registration response” includes the IP address extracted from the regular record.
The optical access line termination device 32 delivers the “number registration response” to the terminal adapter 34. When the terminal adapter 34 identifies “the telephone 35 is not a legitimate telephone” based on this “number registration response”, the terminal adapter 34 interrupts the call setting of the outgoing call generated in the telephone 35.

However, on the contrary, when “telephone 35 is a legitimate telephone” is identified, the terminal adapter 34 is linked with the optical access line terminator 32 between the telephone 35 and the optical access line 31. Take a physical interface.
Further, the terminal adapter 34 is directly connected to the terminal to which the above IP address is assigned on the Internet 37 (here, it is assumed that the destination is an IP telephone destination) or directly to each other via the SIP server 38. By exchanging predetermined information via the Internet 37, call setting for the outgoing call is performed.

As a prior art related to the present invention, as described in Non-Patent Document 1 to be described later, “IP phone / wireless LAN compatible device that simply realizes an IP phone and a wireless LAN via an optical access line” There is.
http://flets.com/ipphone/index.html

By the way, in the above-described conventional example, in order for a subscriber to receive a telephone service through the circuit switching network and the Internet 37, as shown in FIG. A terminal adapter 34 was provided, and both the optical access line 31 and the subscriber line 33 had to be drawn into the house.
Furthermore, the optical access line termination device 32 and the terminal adapter 34 can access the Internet 37 even in a house different from the original subscriber's house as long as the optical access line is drawn into the house. Therefore, the telephone set 35 did not function as a “fixed telephone set” such as a “telephone set directly accommodated via the subscriber line 33” as an Internet telephone terminal.

  It is an object of the present invention to provide a network termination device in which a telephone connected via an optical transmission line as an access line can function as a fixed telephone without changing the basic configuration of hardware. .

  2. The network termination device according to claim 1, wherein the first termination means is fixed to the transmission path and is given a telephone number in the network termination apparatus that terminates the storage switching network or the message switching network through the transmission path. A call setting for a call that is a specific terminal installed in the storage and switching network or the message switching network and a call signal for the call, Take the interface related to.

That is, the network termination device according to the present invention is fixed by fixing the connection to the transmission line described above to the transmission line, and the terminal accommodated via the network termination device and the storage described above. The transmission of a call signal with a desired terminal accommodated in the exchange network or the message exchange network is realized.
Therefore, the terminal is accommodated as a fixed terminal via the transmission path described above under the network termination device according to the present invention.

  The network termination device according to claim 2, wherein the first termination means is fixed to the transmission path and has a different telephone number when the storage switching network or the message switching network is terminated via the transmission path. Between a plurality of individually assigned terminals and the transmission path, a call setting of a call that is a destination or a source of a specific terminal installed in the storage switching network or the message switching network, and An interface is involved in the transmission of call signals.

That is, in the network termination device according to the present invention, a plurality of terminals are accommodated as fixed terminals via the transmission line as long as the increase in the load of the first termination means is allowed. .
Therefore, a plurality of fixed terminals are accommodated at a low cost for the storage exchange network or the message exchange network.

  According to a third aspect of the present invention, the first termination means is fixed to the transmission line and terminates the storage switching network or the message switching network via the transmission path. The second termination means terminates the circuit switching network. These first and second termination means are generated in a terminal to which a telephone number is assigned, and a specific terminal installed in the storage switching network or the message switching network is a destination or a source of a call. The distribution of transmission bands used for call setting and transmission of call signals for the call is coordinated.

That is, call setup and call signal transmission of a call generated in a terminal accommodated via a network termination apparatus according to the present invention utilize the transmission bands of both the storage exchange or message exchange network and the circuit exchange network. Can be realized efficiently.
Therefore, in the network termination device according to the present invention, the quality of communication services provided to terminals accommodated via the network termination device is enhanced.

The network termination device according to claim 4, wherein the first termination means is configured to connect the storage and switching network or the network termination device via the transmission line, according to any one of claims 1 to 3. By cooperating with the message exchange network, processing related to authentication of the terminal where the call originates is performed.
That is, when a network termination device including a first termination unit fixed to a transmission path is connected to a transmission path different from the transmission path, provision of communication services to terminals connected to the network termination apparatus is prevented. Is done.

  Therefore, a communication service is provided to a terminal accommodated via the network termination device according to the present invention only when it is legitimate as the fixed terminal described above.

As described above, in the present invention, a terminal is accommodated as a fixed terminal via a transmission line under the network termination device according to the present invention.
Further, in the present invention, a plurality of fixed terminals are accommodated at a low cost with respect to the storage exchange network or the message exchange network.
Furthermore, according to the present invention, the quality of communication services provided to terminals accommodated via the network terminating device according to the present invention is enhanced.

Further, in the present invention, a communication service is provided to a terminal accommodated via the network terminating device according to the present invention only when it is legitimate as the above-described fixed terminal.
Therefore, in the communication system to which these inventions are applied, a desired terminal is accommodated as a fixed terminal with respect to the storage switching network or the message switching network without being restricted by cost, service quality, reliability, and other restrictions. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing first and second embodiments of the present invention.
In the figure, in the user's house, in addition to the telephone 35 and the above-described information terminal, “the optical port fused to one end of the optical access line 31 and the telephone 35 and the information terminal connected to the information terminal respectively. A network termination device 10 "having a first and a second port.

The network termination device 10 is connected to the optical module 11 forming the optical port described above, the connectors 12 and 13 used for connection to the telephone 35 and the information terminal, and the optical module 11 and the connectors 12 and 13 respectively. And a DSP 14 having input / output ports.
The operation of the first embodiment of the present invention will be described below.
[First embodiment]
The DSP 14 functions as both the optical access line terminator 32 and the terminal adapter 34 shown in FIG. 2 by software stored in advance in the DSP 14 and executed in cooperation with the optical module 11. Therefore, the optical access line termination device 32 and the terminal adapter 34 shown in FIG. 2 are integrated and configured as a combination of the DSP 14 and the optical module 11.

In addition, as described above, since one end of the optical access line 31 is fused to the optical port of the optical module 11, the network termination device 10 is not easily disconnected from the optical access line 31.
That is, the network terminating device 10 cannot be easily relocated to a different home from that of the original subscriber where the telephone 35 is installed.

Therefore, according to the present embodiment, the telephone line 35 is “the terminal of the IP telephone accommodated in the Internet 37” without the subscriber line 33 being drawn into the subscriber's home and without the cost being significantly increased. It functions stably as a “fixed telephone” for receiving an incoming call or for receiving an “IP telephone call generated by the terminal”.
In the present embodiment, the number of telephones installed in the subscriber's home is “1”.

However, the number of such telephones is within the range of the excessive processing amount of the DSP 14 functioning as the optical access line terminating device 32 and the terminal adapter 34 described above, and the DSP 14 can realize the processing related to a plurality of telephones as multiple processing. In some cases, a desired number may be set.
[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described.

In the present embodiment, as indicated by a dotted line in FIG. 1, the subscriber line 33 is drawn into the user's home, and one end of the subscriber line 33 is connected to a corresponding port of the network termination device 10.
In the network terminating device 10, one end of the subscriber line 33 described above is connected to a corresponding port of the DSP 14 via the connector 15.
The operation of the second embodiment of the present invention will be described below with reference to FIG.

The feature of this embodiment is the following processing procedure performed by the DSP 14.
For example, when a call originates from the telephone 35 (here, it is assumed that the telephone 35 is transmitted to the terminal of the IP telephone accommodated in the Internet 37), the DSP 14 “links with the SIP server 38”. "Authentication of the telephone 35 performed as described above", "processing for obtaining an IP address corresponding to the telephone number based on the telephone number of the destination terminal", and "call setting procedure for this outgoing call" A part of the “process for transmitting / receiving predetermined control information” and the “process for transmitting / receiving a call signal” are similar to the conventional example, “communication formed with the Internet 37 via the optical access line 31”. This is done by coordinating with a server or a terminal through a “route”.

However, for all processes other than such a partial process, the DSP 14 uses the Internet 37 via the subscriber line 33 and the “access point installed in the circuit switching network to which the subscriber line 33 belongs”. And by linking with a server or a terminal facing each other through a communication path separately formed on the Internet 37.
In other words, the traffic related to the call setting of “IP phone outgoing call or incoming call generated in the telephone 35” and “transmission of call signal” is effectively utilized by the excess processing amount of the DSP 14, so that the subscriber line 33 and “the optical access line 31 fused at one end to the network terminating device 10”.

Accordingly, the telephone 35 functions as a “fixed telephone” at a low cost and in a stable manner, as in the first embodiment described above, and the quality of the communication service provided to the telephone 35 is the call setting. Can be performed efficiently or can be enhanced by distributing the above traffic.
In each of the above-described embodiments, the signal system of the subscriber line 33 and the electrical interface conditions are not specifically shown.

However, according to the present invention, if the subscriber line 33 is a subscriber line connected to "a circuit switching network different from the Internet 37", regardless of the signal system of the subscriber line 33 and the interface conditions, Applicable.
In each of the above-described embodiments, the telephone 35 is applied to an IP telephone service in which a terminal accommodated in the Internet 37 corresponds to a transmission source or a destination.

  However, the present invention is not limited to such an IP phone service. If the call service is realized by transmitting a call signal as a sequence of packets, datagrams, or other transmission units, the Internet 37 described above can be used. Even if it is replaced by a desired storage switching network or message switching network, it can be similarly applied regardless of the communication procedure, the physical transmission system, and other conditions.

Further, in each of the above-described embodiments, the optical access line 31 is applied as a wideband access line for the Internet 37.
However, such an access line may be, for example, an extra CATV transmission line or a digital subscriber line, as long as the desired transmission rate and other requirements are achieved.
In each of the above-described embodiments, authentication of the telephone 35 is realized by interposing the SIP server 38 and the above-described database, and mutual conversion between a telephone number and an IP address is achieved.

However, instead of the communication procedure SIP that realizes such a SIP server 38, for example, H.264. The present invention can be similarly applied when the IP telephone service is realized based on H.323 or other communication protocols.
Further, the above-described authentication of the telephone 35 may not be performed at all when the present invention is applied to a private network.

In each of the above-described embodiments, the present invention is applied to an IP phone that transmits a voice signal as a call signal.
However, the present invention is not limited to such a call signal. For example, when various signals having an occupied band in an audible frequency band such as an analog facsimile signal are transmitted as a call signal, the present invention is similarly applied. Applicable.

Further, in each of the above-described embodiments, the optical port of the network terminating device 10 is fixed to the optical access line 31 by being fused to one end of the optical access line 31.
However, the “optical port of the network terminating device 10” is fixed to the optical access line 31 in order to prevent or prevent the fixed state from being easily released, for example, “This optical access line 31 It may be realized as a sealing of a “part where the optical coupling with” is realized.

Such optical coupling may be realized by any method as long as desired transmission quality, physical strength and stability are ensured.
Furthermore, the present invention is not limited to the above-described embodiments, and various embodiments can be made within the scope of the present invention, and any improvements are made to some or all of the constituent devices. Also good.

It is a figure which shows 1st and 2nd embodiment of this invention. It is a figure which shows the structural example of the apparatus provided in the subscriber's house in which the optical fiber was drawn. It is a 1st figure explaining operation | movement of a prior art example. It is a 2nd figure explaining operation | movement of a prior art example.

Explanation of symbols

10 Network Termination Device 11 Optical Module 12, 13, 15 Connector 14 DSP
31 Optical Access Line 32 Optical Access Line Terminator 33 Subscriber Line 34 Terminal Adapter (VoIP-TA)
35 Telephone 36 Subscriber Line Switch 37 Internet 38 SIP Server

Claims (4)

In a network termination device that terminates a storage switching network or a message switching network via a transmission line,
Between a terminal that is fixed to the transmission path and is given a telephone number and the transmission path, a specific terminal installed in the storage switching network or the message switching network is used as a destination or a source of a call. A network termination device comprising first termination means for taking an interface related to call setting and transmission of a call signal of the call. In a network termination device that terminates a storage switching network or a message switching network via a transmission line,
A specific terminal installed in the storage switching network or the message switching network is called or called between a plurality of terminals fixed to the transmission path and individually assigned different telephone numbers and the transmission path. A network terminator comprising a first terminator that provides an interface related to call setting of a base call and transmission of a call signal for the call. First termination means fixed to the transmission line and terminating the storage exchange network or message exchange network via the transmission line;
A second termination means for terminating the circuit switched network;
The first termination means and the second termination means are:
Call setting of a call that occurs in a terminal to which a telephone number is assigned and a specific terminal installed in the storage switching network or the message switching network is a destination or a source, and transmission of a call signal of the call A network terminator characterized by coordinating the dispersion of the transmission band used in the network. In the network termination device according to any one of claims 1 to 3,
The first termination means is:
A network terminating device, characterized in that processing relating to authentication of a terminal where the call originates is performed by linking with the storage switching network or the message switching network via the transmission path.

Images