Canon C3500 - Manual (Page 150)

5-2 Receiving Faxes Chapter 5
Receiving Documents Automatically—Fax Only Mode
When you set up the MultiPASS for a dedicated fax line, the unit is
prepared to automatically receive a document whenever a call comes
over the fax line. If a voice call comes in, the caller will hear the fax tone.
Receiving Both Documents and Telephone Calls
Automatically—Fax/Tel Mode
In Fax/Tel Mode, the MultiPASS monitors all incoming calls over the
telephone line. When the MultiPASS receives an incoming call, it checks
to see if the call is from another fax machine trying to send a document
or from someone wanting to talk to you. You must have a telephone
connected to the MultiPASS to use this mode.
How Fax/Tel Mode Works
In Fax/Tel Mode, a telephone attached to the MultiPASS will not ring
when it receives a call from another fax machine that is trying to send a
document. This is so that you are not disturbed when your MultiPASS
is communicating with another fax machine. The unit automatically
receives the document.
If the call is from a person, the MultiPASS rings to alert you to pick up
the phone. You must pick up the telephone connected to the MultiPASS.
If you do not pick up the telephone connected to the MultiPASS within
15 seconds (set by the Ring Time option), the unit stops ringing. It
checks again to make sure the call is not from a fax machine and then
hangs up.
N
The MultiPASS does not recognize an extension telephone connected to
another phone jack (that is, not connected to the MultiPASS).
If a call comes in and you pick up an extension phone, the telephone
connected to the MultiPASS will continue to ring for 15 seconds, check
for a fax, and then hang up.