 | AT&T | | | |
 | Blue Coat Systems, Inc | BCSI
| $177,700,000 | 25 |
| Link | BroadBand Solutions | | | |
| Link | Callware Technologies | | | |
| Link | Fort Supply Technologies | | $1,250,000 | 20 |
 | GlobeCast Enterprise Services | | | |
 | HireVue | | | 4 |
 | iLinc Communications | ILC
| $14,200,000 | |
| Link | Interlinx Communications | | $500,000 | 5 |
 | L-3 Communications | LLL
| $13,960,500,000 | 100 |
| Link | Luxal Corporation | | | 0 |
| Link | Matrix Communications | | $1,674,910 | 11 |
 | NACT Telecommunications | | $12,500,000 | 75 |
| Link | NLE | | | 13 |
| Link | PacketPointe | | | |
| Link | Parlant Technology, Inc | | | 25 |
| Link | Phonex Broadband Corporation | | $4,500,000 | 30 |
 | Qwest Communications | | | 10 |
| Link | RemindMeCall | | | 0 |
| Link | Renasis, LLC | | $2,500,000 | 20 |
 | Rocky Mountain Voice & Data | | $2,750,000 | 5 |
| Link | SmartTalk | | | |
 | Sorenson Media | | $240,000,000 | 1 |
 | Spring Communications | | | 0 |
| Link | Storyrock Electronic Publishing | | | 0 |
 | SunGard Availability Services | | | 150 |
| Link | TCN Inc | | | 45 |
| Link | TCN | | | |
 | Touchfon International, Inc | | | 15 |
 | UCN INC | UCNN
| $82,800,000 | 100 |
| Link | UTOPIA | | | 0 |
| Link | Veracity Communications | | $9,386,700 | 48 |
| Link | Wasatch Publishing / Digital IQ | | $200,000 | 5 |
| Link | Xapio | | | 0 |
 | XO Communications | XOHO
| $1,430,000,000 | 20 |
|
