The Handset Layout
1. Earpiece
2. USB Cable Jack
3. Headset Jack / Audio
Patch Cable Jack (2.5mm)
4. On/Flash Key
5. Dialing Keys (0-9, *, #)
6. Speakerphone Key
7. LCD Display
8. Menu/Select Key
9. Softkeys
10. NavKeys(Navigation Keys)
11. Volume Keys
12. Off/Clear Key
13. Microphone
5