Telephonic communications – Multi-line or key substation system with selective switching... – Switching or supervision feature
Reexamination Certificate
1999-03-31
2001-05-01
Nguyen, Duc (Department: 2743)
Telephonic communications
Multi-line or key substation system with selective switching...
Switching or supervision feature
C379S177000, C379S156000
Reexamination Certificate
active
06226371
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to the field of telecommunications. More specifically, the present invention is directed to an improved telecommunications system that provides enhanced compatibility among the systems.
2. Description of the Related Art
Conventional communication systems, particularly private branch exchange communication systems, employ a system software that essentially coincides for various versions of expansion. These are available as what are referred to as smaller or medium-sized enlarged communication systems of a system series. Each system within the system series classified in an ascending sequence given the approximately same system concept is in turn to be variably designed in view of the connection possibilities for subscriber lines and of the connection possibilities for special systems, particularly public systems.
The hardware platforms of these systems essentially differ on the basis of their structural format, the nature of the backplane wiring and on the basis of the format. For example, this may be the dimensions of the peripheral assemblies. This leads to the fact that, due to these differences, an assembly developed for specific functions of, for example, a medium-sized or, respectively, large system in this series cannot be utilized in what is referred to as a smaller system. Due to the differences in the dimension, in the interfaces and in the mechanical plug-type connectors, they must be newly developed platform-related. This relates, for example, to specific performance features and specific office or, respectively data network accesses that, for example, are fundamentally present only for the more highly classified systems in the system series. This then leads to the fact that such specific solutions that are only provided for a limited number of such smaller systems can only be realized with a high cost.
SUMMARY OF THE INVENTION
One object of the invention is to overcome the above-mentioned shortcomings other objects and advantages of the present invention will become apparent from the following Summary and Detailed Description of the Preferred Embodiments. One aspect of the invention is comprised therein that a small system is designed so that of its hardware platform can flexibly accept system-atypical, peripheral assemblies from a different system of the system series. As a result of a corresponding, mechanical pre-performance, only a slight adaptation measure is still required for such an acceptance of an assembly. The resources, for example, PCM-oriented or, respectively, HDLC-oriented plug-in locations of the assembly to be introduced as needed from another system are fundamentally already present. As a result of this pre-performance, for example within coupling path accesses, a certain compatibility is thus already present.
The adaption outlay within an existing central assembly of the basic system that comprises a plug-in location for a system-atypical assembly is low since such an assembly from a “higher” system often usually comprises its own controller in addition to corresponding hardware parts, as a result whereof its software modules are correspondingly implemented.
Inventively, either plug-in locations that have become free due to a system variation in the form of the use of more highly integrated structural units of a central assembly or those that are optionally provided from the very outset are employed as additional plug-in locations for peripheral plug-in assemblies. Such plug-in assemblies of a higher system then serve the purpose of realizing a special service feature originally not available for the basic system. The platform-specific development for such a service feature that is otherwise necessary is thus eliminated since a corresponding assembly can be employed for a plurality of platforms.
Inventively, the additional plug-in locations are fashioned such in the view of the signaling supply that a few arbitrary plug-in assemblies from the repertoire of plug-in assemblies that are present in a system classified more highly within the system series can be additionally utilized in the sense of expanding the functionality of the system.
REFERENCES:
patent: 5577042 (1996-11-01), McGraw, Sr. et al.
Bell Boyd & Lloyd LLC
Nguyen Duc
Siemens Aktiengesellschaft
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