Telephonic communications – Substation or terminal circuitry – Wire distribution
Patent
1994-09-14
1996-05-28
Hofsass, Jeffery
Telephonic communications
Substation or terminal circuitry
Wire distribution
379399, 439638, H04M 100
Patent
active
055219764
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention pertains to a subscriber apparatus with one or more modules interconnected by a bi-directional bus with conveys both digital and analog signals. The modules perform different telecommunication functions, such as telephone, facsimile and others.
2. Description of the Prior Art
EP-A2-0 363 956 discloses a data input and data processing device which can be connected to a telephone. Thus, the data input and data processing device provides the capability to input different data and to store the same, for example, names, addresses and telephone numbers. The telephone has the known functions of establishing a connection, relaying a telephonic communication and triggering a connection in a PSTN. When the data input and data processing device is connected with the telephone, this combination enables a simpler and more comfortable handling of the telephone.
Such a combination can simplify the use of the telephone, but it does not offer any access to other telecommunication services such as telefax or facsimile transmission. Furthermore, such an arrangement is not very user-friendly, since conventional operating elements of the telephone, for example, the dial or the keys can no longer be used.
EP-A2-0-141289 discloses the main components of a subscriber station connected with each other by a bi-directional bus.
In the aforementioned subscriber station, it is disadvantageous that only some main components can be connected to the bus by a special interface. Furthermore, it is disadvantageous that only one single selection control computer controls all components connected with the bus, whereby either considerable processing times are generated in the subscriber location, or that a relative expense is required for the selection control computer.
DE-A1-40 08 667 discloses the connection of a computer on the internal bus and to a pair of conductors for transmitting the user-channel-information of a digital telecommunication transmission device. In this case the computer is in form of a module and is inserted into the telecommunication transmission device.
The disadvantage of this device combination is that the telecommunication final device must be suitable for the integrated services digital network (ISDN). An analog telecommunication transmission device cannot switched together with such a computer, since it does not generate or process digital signals. EP-B1-0092 084 discloses a telecommunication device with an integrated electronic text transmitter for transmitting and/or receiving text data. There, the total device consists of a base device and one or a plurality of functional modules which are being connected with the base device by plug-in components. The base device provides, among others, telephone circuitry, at least a part of the control device and a part of the text data storage. Additional storage means and additional control devices are provided in the functional modules. A disadvantage of this telephone device with the integrated electronic text transmitter is that a plurality of function modules are required to enable only one single additional function, namely the answering unit. Furthermore, it is also disadvantageous that only a limited number of additional modules can be connected with the base device.
DE-B1-28 54 516 discloses a telephone with an integrated answering unit. For storing the voice signal, two different memories are being used, a digital memory and a magnetic tape memory on which the analog voice signal is stored. This telephone device with the integrated answering unit is disadvantageous that no more than two additional structural groups and no structural groups with a different function can be connected to the telephone.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of the invention to design a subscriber station so that additional modules can be connected at a later time to the bus and that the same can be automatically brought into an operative condition.
This object is solved in that each individual modul
REFERENCES:
patent: 5349640 (1994-09-01), Dunn et al.
patent: 5423697 (1995-06-01), MacGregor
Eibenberger Konrad
Janosch Joachim
Grundig E.M.V.
Hofsass Jeffery
Saint-Surin Jacques M.
LandOfFree
Modular subscriber device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modular subscriber device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modular subscriber device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-793473