Exhibit 21
Subsidiaries
| Subsidiary Name | Jurisdiction |
| ShoreTel International, Inc. | Delaware, USA |
| ShoreTel Pty Ltd | Australia |
| ShoreTel Australia Pty Ltd. | Australia |
| ShoreTel UK Ltd | UK |
| ShoreTel GmbH | Germany |
| ShoreTel Singapore Pte. Ltd. | Singapore |
| ShoreTel Canada Limited | Canada |
| ShoreTel Philippines Corporation | Philippines |
| ShoreTel Communications Private Limited | India |
| ShoreTel France SARL | France |
| Agito Networks, Inc. | Delaware, USA |
| M5 Networks, LLC | Delaware, USA |
| M5 Callfinity, Inc. | Massachusetts, USA |
| M5 Acquisition Corp | Delaware, USA |
| M5 Telecom-USA, Inc. | Delaware, USA |
| Corvisa LLC | Wisconsin, USA |
| Corvisa Europe Ltd. | UK |