| 78617554 | VERTICAL COMMUNICATIONS | VERTICAL COMMUNICATIONS, INC. | 3248702 |
| 86783937 | V VERTICAL | Vertical Communications, Inc. | 5652252 |
| 86783970 | V VERTICAL | Vertical Communications, Inc. | 6029395 |
| 87555076 | VERTICAL ATLAS | Vertical Communications, Inc. | 5528056 |
| 87555398 | V | Vertical Communications, Inc. | 5427039 |
| 87358077 | STARPLUS | Vertical Communications, Inc. | 5290848 |
| 73104250 | COMDIAL | VERTICAL COMMUNICATIONS, INC. | 1085372 |
| 74194710 | COMDIAL | VERTICAL COMMUNICATIONS, INC. | 1697486 |
| 86255115 | CRMLINK | Vertical Communications, Inc. | 4969279 |
| 86018764 | BUSINESS IN MOTION | Vertical Communications, Inc. | 4651353 |
| 75125698 | CORPORATE OFFICE | VERTICAL COMMUNICATIONS, INC. | 2097118 |
| 74393166 | QUICKQ | VERTICAL COMMUNICATIONS, INC. | 1912304 |
| 73581657 | STARPLUS | VERTICAL COMMUNICATIONS, INC. | 1406614 |
| 77219010 | WAVE IP 2500 | VERTICAL COMMUNICATIONS, INC. | 3448119 |
| 85258655 | MBX IP | Vertical Communications, Inc. | 4184479 |
| 76663494 | VERTICAL WAVE | VERTICAL COMMUNICATIONS, INC. | 3472769 |
| 85262193 | SBX IP | Vertical Communications, Inc. | 4177235 |
| 77196747 | TELEVANTAGE | VERTICAL COMMUNICATIONS, INC. | 3452384 |
| 77218997 | VERTICAL WAVE VIEWPOINT | VERTICAL COMMUNICATIONS, INC. | 3456849 |
| 74668951 | VODAVI | VERTICAL COMMUNICATIONS, INC. | 2014951 |
| 76340500 | T TELENIUM | VERTICAL COMMUNICATIONS, INC. | 2792299 |
| 85258691 | WAVE IP | Vertical Communications, Inc. | — |
| 77434454 | SBX IP 320 | Vertical Communications, Inc. | 3530498 |
| 77219020 | APPLICATIONS INSIDE | VERTICAL COMMUNICATIONS, INC. | — |
| 77016265 | RANGER SS CORDLESS TELEPHONE | VERTICAL COMMUNICATIONS, INC. | 3458657 |
| 77016263 | RANGER CORDLESS TELEPHONE | VERTICAL COMMUNICATIONS, INC. | 3441313 |
| 76476586 | CHALK TALK | VERTICAL COMMUNICATIONS, INC. | 2812485 |
| 76340263 | XTS | VERTICAL COMMUNICATIONS, INC. | 2856352 |
| 76310088 | DISCOVERY VOIP | VERTICAL COMMUNICATIONS, INC. | 2748267 |
| 76310087 | EXPRESS VOIP | VERTICAL COMMUNICATIONS, INC. | 2738315 |
| 76200573 | MINIVOICE | VERTICAL COMMUNICATIONS, INC. | 2884614 |
| 75784570 | INTERCHANGE | VERTICAL COMMUNICATIONS, INC. | 2601729 |
| 75712977 | STARPLUS TRIAD | VERTICAL COMMUNICATIONS, INC. | 2424605 |
| 75362627 | ONELOOK | VERTICAL COMMUNICATIONS, INC. | 2286294 |
| 75262633 | INSTANTOFFICE | VERTICAL COMMUNICATIONS, INC. | 2269492 |
| 75262632 | VERTICAL NETWORKS | VERTICAL COMMUNICATIONS, INC. | 2269940 |
| 74709452 | INFINITE | VERTICAL COMMUNICATIONS, INC. | 2892110 |