Telephonic communications – Centralized switching system – Switching controlled in response to called station...
Patent
1993-11-12
1996-04-16
Matar, Ahmad F.
Telephonic communications
Centralized switching system
Switching controlled in response to called station...
379 2, 379 10, 379102, H04M 308
Patent
active
055090656
ABSTRACT:
A telecommunication system is described that has an interface and multiple lines, such as T-1 lines. The multiple lines include at least one service line and at least one spare line. The interface comprises a bus across the service line and spare line and a common controller. The bus includes switches for interconnecting and disconnecting the bus from one or more of the multiple lines. The common controller accomplishes multiple functions: (a) responding to a transfer signal by interconnecting the spare line to the bus and disconnecting the service line from the bus, (b) recognizing a restoration of service signal on the service line upon which service was disconnected, and (c) sending commands to the switches for reconnecting the service line to the bus and disconnecting the spare line from the bus. Further, in one embodiment, the common controller also recognizes a restoration of service signal on the spare line. The transfer signals and restoration of service signals are provided to the telecommunications system by an outside source, such as a telephone company central office.
REFERENCES:
patent: 5224149 (1993-06-01), Garcia
Matar Ahmad F.
Teltrend Inc.
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