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US 4,789,981 AGranted
System for providing data services to a circuit switched exchange
AssigneeAlcatel
InventorsJohn A. Yanosy, Jr., Jitender K. Vij, Santanu Das
Life of this patent
Estimating the term…
Abstract
A system for providing data services in an evolutionary fashion as well as providing access to external data communication networks for subscribers to a circuit switched voice exchange includes a data services adjunct connected in series with presently existing voice communication paths.
Claims16
A system for providing data services to subscribers of an existing circuit switched exchange having at least one existing voice communication path, said system comprising:
- means for interfacing both voice and data subscriber peripherals to said existing voice communication path;
- means for communicating voice and data information, said means including means for receiving and separating voice and data information, a data information path, connected to said means for receiving and separating voice and data, for communicating data information, a voice information path, separate from said data information path and connected to said means for receiving and separating voice and data information, for communicating voice information, means for interfacing said data information path to a data switching network, and means for interfacing said voice information path to a voice communication path;
- and
- connector means, serially connected in said existing voice communication path, for connecting a portion of the existing voice communication path connected to said means for interfacing both voice and data subscriber peripherals to said means for receiving voice and data information and for connecting said voice communication path to a portion of the existing voice communication path connected to said existing circuit switched exchange, whereby said means for communicating voice and data information receives voice and data information from said means for interfacing both voice and data subscriber peripherals via said existing voice communication path and provides voice information to said existing circuit switched exchange via said existing voice communication path.
1 more element
A system for providing data service to subscribers of an existing circuit exhcange having an existing voice communication path, said system comprising:
- means for interfacing both voice and data subscriber peripherals to said existing communication path;
- means for communicating voice and data information, said means including a voice/data interface device having means for receiving voice and data information and a first PCM bus interface, a circuit switched exchange interface device having a second PCM bus interface and means for outputting voice information, a PCM bus for interconnecting said first and second PCM bus interfaces, means for interfacing with a data network, and an internal bus connected to said voice/data interface device, said circuit switched exchange interface device and said data network interfacing means;
- and
- connector means, serially connected to said existing voice communication path, for connecting a portion of the existing voice communication path connected to said means for interfacing both voice and data subscriber peripherals to said means for receiving voice and data information and for connecting said means for outputting voice information to a portion of the existing voice communication path connected to said existing circuit switched exchange, whereby said means for communicating voice and data information receives voice and data information from said means for interfacing both voice and data subscriber peripherals via said existing voice communication path and provides voice information to said existing circuit switched exchange via said existing voice communication path.
1 more element
Dependencies are inferred from the claim text.