Technical information

Call management
When a call comes in, your modem tries to identify the type of call it is by detecting calling tones. The
modem then checks to see which programs are set to auto-answer and connects the incoming call to
the appropriate program. This is known as incoming call management.
While the modem is on, it answers calls automatically according to the following rules:
m The modem only answers if “Auto-answer incoming calls” is selected in the control panel.
m The modem only answers if at least one program is set to auto-answer.
m If several different programs are set to auto-answer, the modem uses calling tone detection to
identify the type of call, then sends it to the corresponding program.
Since not all calling devices use calling tones, some calls cannot be identified. To enable the modem to
answer unidentified calls—when calling tone detection is unsuccessful—use the “Transfer incoming
calls” buttons to choose the type of application program—Fax, Voice, or Data—you want to answer
unidentified calls. If you expect to receive both voice and data calls, ask your callers to send a data
calling tone when calling your machine.
Make sure the fax, voice, or data program you designate to handle unidentified calls is set to auto-
answer.
Ignore dial tone when dialing
When the “Ignore dial tone when dialing” checkbox is selected, the modem dials even though a dial
tone cannot be detected. (This feature is sometimes called “blind dialing.”) It is a useful feature for
locations with a PBX system, such as hotels, where the modem may have difficulty recognizing the
PBX dial tone.
Chapter
Four
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