Siemens Hicom 150 H Operating Instructions Manual page 8

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(
or
or
;
Placing the first call on hold and answering the sec-
ond call:
) Enter the code.
You are connected to the call waiting party immediately.
The first party is placed on hold.
Ending the second call and resuming the first one:
( ) Press the key.
Enter the code or wait two seconds.
or (depending on the configuration)
( ) Press the key twice.
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If this function has been configured (ask your service
technician), you prevent or allow a second call Æ page 7
from being signaled by automatic camp-on during an
ongoing call.
Lift the handset.
Enter the code to "prevent" or "allow" call waiting.
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You can suppress the call waiting tone (approx. every
six seconds) for external calls. A one-time special dial
tone then alerts you to the waiting call.
Lift the handset.
Enter code for "tone off" or "tone on".