Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7646763 | Method and apparatus for improving voice band data (VBD) connectivity in a communications network | David Cheng-Song Qi, Yan Wang | 2010-01-12 |
| 7609646 | Method and apparatus for eliminating false voice detection in voice band data service | David Cheng-Song Qi, Yan Wang | 2009-10-27 |
| 7583621 | Method and apparatus for suppressing echo cancelling in a packet switched network | David Cheng-Song Qi, Yan Wang, William Page | 2009-09-01 |
| 7359489 | Method and apparatus for inclusive echo canceller testing | William Page, Yan Wang, Mark Milot, Ibrahim Yavuz, David Cheng-Song Qi | 2008-04-15 |