Bosch Integral TM13 Operating Instructions Manual page 105

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Telephone functions overview A
T
Tone dialing next
You can change the dialing method during a connection, for example, to
remote–control an answering machine.
( p. 128)
Transfer call
You answer an additional call during an ongoing call and connect this call to
another party in a refer-back.
TRAP ( p. 128)
Trap
You can register the call number of an unwanted caller.
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