User manual
21FX 250 / FX 500 User Manual
1. Earpiece
2. Display
3. Ear-set Jack
4. OK Key
5. 4-Way Navigaon Keys
6. Select Le Key
7. Select Right Key
8. Call/Send key
9. End key
10. Keypad (Alpha-numeric)
11. Mode Key
12. Clear Key
13. Microphone
14. Service Port
15. Ringer*
*The ringer is located at the back of the Primary Handset.
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5.3 Primary Handset