| Patent No. | Patent Title: |
| 5734712 | Method for off-hook detection during ringing and the use of a sub... |
| 5717752 | Data access arrangement |
| 5715310 | Apparatus and method for echo attenuation |
| 5710810 | Quick dialing in a mobile phone |
| 5706342 | Method and apparatus for off-hook detection |
| 5699423 | Telephone set in which an echo signal is effectively cancelled in... |
| 5696820 | Telephone and data communications line conditioner system |
| 5696819 | Speech communication apparatus |
| 5692043 | Enclosure for remote terminal in a distributed digital loop syste... |
| 5689551 | Caller ID system with prescaler |
| 5689556 | Method of detecting narrow-band signals in an echo canceller |
| 5687227 | Telephone with user recorded ringing signal |
| 5684873 | Quick dialing in personal mobile phone |
| 5682378 | Echo cancellation for modems |
| 5680450 | Apparatus and method for canceling acoustic echoes including non-... |
| 5680451 | Listener echo cancellation for modems |
| 5675644 | Method and apparatus for canceling echo accounting for delay vari... |
| 5668865 | Echo canceler E-side speech detector |
| 5668871 | Audio signal processor and method therefor for substantially redu... |
| 5666407 | Software-based bridging system for full duplex audio telephone ... |
| 5662493 | Multiple contact pin holder for weak current installations |
| 5659609 | Echo canceller and waveform-distortion compensation device |
| 5657385 | Connecting device for connecting sheathed lines for telephones an... |
| 5649012 | Method for synthesizing an echo path in an echo canceller |
| 5646990 | Efficient speakerphone anti-howling system |
| 5644633 | Automatic telephone dialer system |
| 5642416 | AM broadcast band interference filter for line-powered telephone |
| 5640450 | Speech circuit controlling sidetone signal by background noise le... |
| 5638439 | Adaptive filter and echo canceller |
| 5623544 | Telephone headset interface circuit |
| 5619567 | Variable DC feed characteristic in a subscriber line interface ci... |
| 5619566 | Voice activity detector for an echo suppressor and an echo suppre... |
| 5615256 | Device and method for automatically controlling sound volume in a... |
| 5612996 | Loop gain processing system for speakerphone applications |
| 5600714 | Conference telephone using dynamic modeled line hybrid |
| 5598466 | Voice activity detector for half-duplex audio communication syste... |
| 5588054 | Power conservation system for a modem in a computer system |
| 5583920 | Intelligent peripheral in video dial tone network |
| 5577115 | Customer premise equipment interface |
| 5570423 | Method of providing adaptive echo cancellation |
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