User Guide: SpectraLink 8020/8030 Wireless Telephone with SIP
| End a PTT Call | 55 |
| Change the PTT Volume | 55 |
| Answer a Telephone Call during a PTT Transmission | 55 |
| Start a Telephone Call during a PTT Transmission | 55 |
| Turn off PTT | 56 |
| Subscribe to additional PTT channels | 56 |
6 | Charger Options | 57 |
| Charger Models | 57 |
| Charging Status Indicators | 58 |
| Single Charger | 59 |
| Dual Charger | 60 |
| Quad Charger | 61 |
7 | Cleaning and Drying the Handset | 63 |
8 | Safety Information | 67 |
9 | Index | 73 |
8 |