AT840 Series User Manual
Outside Dial Tone:An alternative to <Dial Tone> usually used to prompt the user to enter an
external phone number (versus an internal extension). This is triggered by a "," character
encountered in the dial plan.
Busy Tone:Played when a 486 RSC is received for an outbound call.
Reorder Tone:Played when an outbound call has failed or after the far end hangs up during
an established call.
Off Hook Warning Tone: Played when the subscriber does not place the handset on the cradle
properly.
Ring Back Tone:Played for an outbound call when the far end is ringing.
MWI Dial Tone:This tone is played instead of <Dial Tone> when there are unheard messages
in the subscriber‟s mail box.
Holding Tone:Indicate to the local user that the far end has placed the call on hold.
Conference Tone:Plays to all parties when a Three way conference is in progress.
5.7. Programmable key
Event:
None: Do not use this BLF key
Hold: hold a call
Xfer: transfer a call
Conf: make 3 way conference
DND: Do not disturb(can make call but can not receive call).
CFWD: call forward
Speed dial: Speed dial, need to fill a speed dial number.
BLF: Busy lamp field, need to fill a BLF number to monitor.
When the BLF number is ringing , the BLF key will turn to red and blink.
When the BLF number is during a call, the BLF key will stay for red.
The BLF key will be yellow, if the BLF number is idle. And you can press the Key
the number(like speed dial).
CallPickup: Pick up the sb's call which in the same pickup group.
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