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| 5239535 | Arrangement for testing the transmission properties of subscriber... |
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| 5210746 | Communication system network having communication system fallback... |
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| 5199031 | Method and system for uniquely identifying control channel time s... |
| 5191581 | Method and apparatus for providing high performance interconnecti... |
| 5189665 | Programmable configurable digital crossbar switch |
| 5185742 | Transparent signaling for remote terminals |
| 5185743 | Signaling cell switching system |
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| 5181198 | Coordinated transmission for two-pair digital subscriber lines |
| 5175727 | Communication system network interconnecting a plurality of ... |
| 5175734 | Clock supply for multiplex systems |
| 5170394 | Host network communication with transparent connection devices |
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