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Teledex IP250D User’s Guide SIP/MGCP
USING THE IP250D
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HEADSET – For a SIP version phone only, the user may receive a call using the headset by
pressing the LINE 1 or LINE 2 key corresponding to the new call when a headset is plugged
in and the handset is down. The IP phone hardware accommodates two types of headsets,
and the software routes the virtual audio connection to both headset jacks whenever at
least one headset is plugged in. The software also routes the audio to the headset when
the handset is down.
SPEAKERPHONE – The user may receive a call on the speakerphone by pressing the
SPKR/HSET key or by pressing the LINE 1 or LINE 2 key corresponding to the new call if
the headset is not plugged in and the handset is on-hook. Once the call is received, the
caller information disappears, the flashing of the LED and ringing stops, and a virtual
audio channel for conversation is opened.
4.4 PLACING A CALL
The IP250D allows the user to initiate a call through the handset, speakerphone, or
headset as follows:
HANDSET – From the idle state, the user may initiate a call by lifting the handset and
placing the phone off-hook. The user should then listen for a dial tone and dial the
number or extension of the call recipient. The user may also initiate a call while already
on the line with another party.
HEADSET – The user may initiate a call from the idle state using the headset, by plugging
the headset in, keeping the handset on-hook, and pressing the SPKR/HSET key or pressing
the LINE 1 or LINE 2 key.
SPEAKERPHONE – The user may initiate a call on the speakerphone when the handset is
down and the headset is unplugged by pressing the SPKR/HSET key or pressing the LINE 1
or LINE 2 key.
When initiating a call, the LED corresponding to the appropriate line is lit continuously
and the number dialed is shown on the display. Once the user has finished dialing and a
virtual audio connection with the other party has been established, the display changes to
show the elapsed call time. All of the digits dialed while initiating the call are erased from
the display. The user may also dial using speed dial and directory features. During a
telephone conversation, The phone displays the time elapsed for the active call until the
conversation is terminated. The time is displayed in HH:MM:SS format. In the unlikely
event that a call lasts for 100 hours or more, the display simply rolls over to start at 0,
instead of consuming an extra character on the display. The LED for the appropriate line
is lit continuously.