Bittel HWD9888(48)TSD-NS Benutzerhandbuch - Seite 5

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12. LED indicator for system working .
13. VOL key -- Off- hook mode three steps volume adjustable.(On-hook as Exit )
14. SPKR key – Activates speakerphone function with LED indicator.
15. Redial key – Dial the last number dialed and dialed number disappear after
5 minutes.
16. Flash key -- Enters a 600ms hook switch flash for accessing
special telephone system features
17. SPKR MIC.
18. MWL – Ringing and new call indicator , press it to read the message
directly after off-hook .
19. Mute key—a. Press this key to shut off sound for sending without hanging
up on caller( with LED indicator).
b. On hook mode for registering the device.
20. Hold key –Places a caller on hold with LED indicator.
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HWD9888 (48) TSD-NS