In Case Of A Power Failure; During A Power Failure - Canon FAX-TT250 User Manual

In case of a power failure

The user data settings and registered data for one-touch speed dialling and coded speed dialling are saved during a
power failure using a built-in battery. However, documents stored in the fax memory will be deleted and redial data in
the extension phone memory may be lost.

During a power failure

The following restrictions apply to the function of the fax during a power failure or while the power is turned off:
• You cannot use the fax to make telephone calls. Also, if your fax is connected to a telephone, you may not be able
to make telephone calls.
• You cannot send, receive, or copy documents.
• You can receive voice calls only if a telephone, or an extension phone is connected to your fax.
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