Line Error; Out Of Area Calls - Aastra AT-200HT Owner’s Owner's Manual

Line Error

The display will indicate "LINE ERROR" if a call is received
that has an error in the transmission or reception of data.
Important: Always wait for at least two rings to occur prior to
answering a call.

Out of Area Calls

When a call is received from someone whose area code does
not offer Caller-ID service or does not yet provide Caller-ID
delivery to your area via the long distance network, "OUT OF
AREA" will be displayed.
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