Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...
Patent
1991-05-14
1996-06-18
Kuntz, Curtis
Telephonic communications
Telephone line or system combined with diverse electrical...
Having transmission of a digital message signal over a...
379 96, 379 94, H04M 1100
Patent
active
055286712
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a network control system for offering a plurality of remote services such as chat (electronic dialogue), distribution of data (mail), RCS (remote computer service) and processing for a non-attendant subscriber.
Recently, it has been considered to execute processing while realizing communication with remote terminal units through a communication network and it is therefore desired to effectively utilize the communication line for this purpose. Moreover, for communication within the public network or in the network coupling the public network and private network, a low cost communication network may have enough capacity in some cases for use in connection profile of networks. However, when for instance a large amount of images are transmitted as in recent communications, reduction of communication cost becomes a very important problem. In addition, if a distant subscriber is absent, it is now desired to provide a system which can urgently call the distant subscriber.
2. Description of the Related Art
Recently, a communication network has grown more and more complicated as shown in FIG. 29. Namely, certain terminal units are connected with a public network and certain terminal units are coupled with a private line (so-called private leased line network) and these terminal units are capable of communicating a variety of information including image information.
FIG. 29 shows an example of the network. In this figure, the numeral 1 denotes public network; 2, private line; 10A, 10B, 10C, 10D, groups respectively; 3A, 3B, 3C, 3D, terminal units as control stations; 4A, 4B, 4C, 4D, ordinary terminal units respectively.
The terminal units 3A and 4A, 3B and 4B, etc. are connected with the same communication network and are regionally adjacent and thereby classified into the groups 10A, 10B, etc.
In each group, at least one terminal unit functioning as control station 3A, 3B, etc. is provided and some control stations are connected with both the public network 1 and private line 2.
Under the network as shown in FIG. 29, it has been recently desired to execute a plurality of remote services between terminal units, such as chats, message distribution (mail), RCS (Remote Computer Service) and processing for the distant subscriber who is absent. It is certainly desired to realize the remote service as explained above but the following problems arise.
Namely, in the prior art, since the communication line is continuously set open during the services, a dead time when transmission and reception are not directly carried out is also part of the communication cost. Moreover, to avoid such cost, it has been considered to open or close the communication line. However, in this case, an operator must take part in the operation.
Moreover, an application charge of a public network is not proportional to application distance. The application charge in a certain application area may sometimes be higher than the sum of the charge to a certain intermediate point and the charge to the target point from such intermediate point. However, in this case, an application profile in which the charges are lowered, for example, by employing a repeating means does not presently exist now.
Moreover, even in a case where a plurality of long-length distant terminal units for transferring data are distributed and the distant terminal units are located very closely, it is necessary to individually send data through long-length communication to respective distant terminal units.
Private lines have been provided for reduction of communication cost. It is desired to create a connection profile taking advantage of the cost merit of private line while also taking advantage of the nation wide scale of the public network considering the conditions of respective terminal units for making communication to terminal units on the public network from terminal units connected to such private line, or to terminal units on the private line from that of the public network.
Furthermor
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Endo Mamoru
Fukatsu Takanori
Hashimoto Akira
Kakehi Gen
Mogi Yoshio
Fujitsu Limited
Kuntz Curtis
Woo Stella L.
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