Apparatus and method for providing multiple operating configurations in data circuit terminating equipment
US5359709A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1992 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Jan 27, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Multiple operating configurations in data circuit terminating equipment (DCE) are enabled through multiple queues stored in a random access memory and which are loaded with bits and characters coming either from data terminating equipment (DTE) or the telecommunications line. The DSP processor stores bits provided by a transmit circuit in a first queue, determines characters from the bits stored in the first queue based on a first transmission protocol and stores the characters in a second queue. A third queue is used by a control processor to store characters to be transmitted to a remote DCE. The DSP processor determines bits to be transmitted from the characters stored in a third queue based on a second transmission protocol, and stores those bits in a fourth queue. When the DCE is operating in a synchronous mode, the DSP processor determines PCM words for transmission based on the contents of the second queue and stores them in a fifth queue for transmission. Similarly, when the DCE switches to an asynchronous mode, the DSP processor determines PCM words based on the contents of the fourth queue and stores them in the fifth queue for transmission. A similar queue arrangement is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.