18. Numeric keypad
Description of functional buttons, the back
19. [EXT] jack outputs (RJ11 connector), telephone line, possible additional cone axion for the phone
20. [LINE] jack inputs (RJ11 connector), telephone line
21. [LOCK] outgoing calls by switching block key
22. Hands-free microphone
23. Cable slot in the phone base
24. Phone cable slot
3
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