Aastra DT390 - Page 6

DT390
21.3 Charging Spare Batteries 89
21.4 Replacing the Battery 89
21.5 Chargers 90
21.6 Headset 92
21.7 Belt Clip 92
21.8 Portable Device Manager 93
22 Reference 95
22.1 Terminology 95
22.2 Phone Signals 95
22.3 Maintenance 96
22.4 Technical Specifications 96
22.5 Spare parts and Accessories 100
23 Troubleshooting 101
24 Glossary 105
25 Telephony Function Codes 107
1424-EN LZT 103 091 Uen A1 2008-10-27