| Manufacturer | Plantronics |
| Manufacturer Part # | C4220 |
| Cost Central Item # | 10376522 |
| Product Description | Clarity Professional C4220 - Cordless phone w/ call waiting caller ID - 5.8 GHz |
| Product Type | Cordless phone w/ call waiting caller ID |
| Transmission Band | 5.8 GHz |
| Intercom | Yes |
| Speakerphone | Yes ( digital duplex ) |
| Caller ID | Yes |
| Display | LCD display - monochrome |
| Product Type | Cordless phone w/ call waiting caller ID |
| Transmission Band | 5.8 GHz |
| Max Handsets Supported | 3 |
| Dialer Type | Keypad |
| Dialer Location | Handset |
| Dialing Modes | Pulse, tone |
| Intercom | Yes |
| Speakerphone | Yes ( digital duplex ) |
| Caller ID | Yes |
| Call Waiting | Yes |
| Call Hold | Yes |
| Menu Operation | Yes |
| Function Buttons | Speakerphone button, flash button, pause button, mute button, hold button, redial button |
| Volume Control | Yes |
| Ringer Control | Yes |
| Handset Locator | Yes |
| Indicators | Visual ringer light, charge/in use indicator, power indicator |
| Lighted Keypad | Yes |
| Additional Functions | Built-in clock |
| Additional Features | Autotalk, incoming sound amplifier |
| Antenna | Internal |
| Connections | 1 x headset jack / sub-mini-phone 2.5 mm 1 x neckloop jack / mini-phone 3.5 mm |
| Hearing Aid Compatible | Yes |
| Cables Included | Phone line cable |
| Included Accessories | Belt clip |
| Battery | 1 x battery |
| Capacity | 800 mAh |
| Technology | Rechargeable - nickel metal hydride |
| Included Qty | 1 |
| Standby Time | Up to 144 h |