?- Avaya Contact Center (Ayaya Group)
- RingCentral Inc.
- Genesys Telecommunications Laboratories Inc.
- 3CLogic Inc.
- Connect First Inc.
- Five9 Inc.
- Mitel Networks Corporation
- Aspect Software Parent Inc.
- 8X8 Inc.
- Avaya Holdings Corp.
- NICE inContact
- Teleforge Corporation
- 1Stream Inc.
- AVOXI Inc.