AT&T MLS-Series - Manual (Page 4)

Ringing Patterns
You can tell the type of call coming in by the way the phone rings:
Ring...Ring...Ring...Ring...Ring...Ring... Outside Call
Ring-BEEP...Ring-BEEP...Ring-BEEP... Inside Call
Ring-BEEP-BEEP...Ring-BEEP-BEEP... Transferred Call
If Unique Line Ringing is active, all incoming outside calls on MLS-
model phones ring as follows:
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■
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Line 1—pattern described above.
Line 2—ascending tone with dip.
Line 3—descending tone.
Line 4—mixed tone.
Outside calls transferred to your extension ring with the appropriate
Unique Line Ringing pattern followed by two beeps.
Lights
Red (top) light shows what is happening on the line at ANOTHER
extension.
Green (bottom) light shows what is happening on the line at YOUR
extension.
Steady on: Line is busy.
Off (off continuously): Line is idle, available for use.
Flash (long on, long off): Call is ringing on the line.
Alternating Red/Green Flash (red on, green on, red on,
green on): Appears at all extensions in a conference or joined call.
Wink (long on, short off): Call is on hold (anyone with line can pick up).
Flutter (short on, short off): Conference call is on hold.
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