Quotables
"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7095839 | Switching system with separate control connection to remote branch exchanges Disclosed is a telecommunication switching system for switching incoming and/or outgoing calls with several or different branch exchanges, comprising at least one input channel and at least one output channel which is connected to a branch exchange. The output chann... | 08/22/2006 |
| 6574647 | Filter arrangement The invention relates to a filter arrangement for separating analog or digital baseband signals, for example, POTS or ISDN signals and digital wideband signals, which are simultaneously transmitted on a two-wire line of a message transmission system. In a... | 06/03/2003 |
| 6480550 | Method of compressing an analogue signal Described is a method of compressing an analogue signal, e.g. a voice signal, the signal function being continuously sampled, quantized and encoded into data words, the difference between each two successive data words determined and each difference value... | 11/12/2002 |
| 6191684 | Remote supply circuitry Remote supply circuitry for remotely supplying a subscriber connections in a communications system wherein subscribers can be connected to a central point via subscriber lines. Subscriber supply voltage or power supply is provided for each subscriber via ... | 02/20/2001 |
