Bittel HT20 Manual del usuario - Página 16
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SOS
, then press
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PROG
SOS
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BITTEL
Message Waiting Indicator (MWI)
It is compatible with high voltage neon/90V and Lucent low voltage system.
Other MWI signalling systems must be confirmed by the factory and implemented
in production.
The MWI will flash if there is a message. Please dial the telephone number for
voice mail to retrieve the message.
The MWI is also a ringing indicator, which will flash if there is a call or a message.
C.
MAINTENANCE
Do not expose this product to dust, strong sunlight, humidity, high
temperature, or mechanical shock.
Do not use corrosive or abrasive cleansers on this product.
Keep the unit dust free by wiping it with a soft, dry cloth.
D.
TROUBLESHOOTING
1.
No dialing tone
Check the telephone network
Check the connection of handset cord and straight line cord
2.
No ringing or no continuous ring
Check the telephone line
Check the quantity of parallel phone set
Check flash settings
3.
Noise during talk
Check the telephone line
Check the handset cord
Page 16 of 18
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HT20