8.10.3. User Interface 
Activation Sequences
- Previewing a ringing line
- If IDLE or TALK or CONFERENCE -
- Press PREVIEW Key and the PREVIEW LED comes on
- Press a ringing line and calling information is displayed for a programmed
amount of time (Preview-Display timer = 8 seconds default).
- To preview another line, press the LINE key of the line to be previewed.
- To answer a line which is being previewed (preview display information is
active), press the line key again or go off-hook if previewing from idle
state.
- Previewing a line on hold
- If IDLE or TALK or CONFERENCE -
- Press PREVIEW Key and the PREVIEW LED comes on
- Press a manually held line and held party information is displayed for a
programmed amount of time (Preview-Display timer = 8 seconds default).
- To preview another line, press the LINE key of the line to be previewed.
- To answer a line which is being previewed (preview display information is
active), press the line key again or go off-hook if previewing from idle
state.
- Previewing a line you are active on
- While in TALK
- Press PREVIEW Key and the PREVIEW LED comes on
- Press the line you are active on and connected party information is displayed
for a programmed amount of time (Preview-Display timer = 8 seconds default).
- To preview another line, press the LINE key of the line to be previewed.
- To answer a different line which is being previewed (preview display information
is active), press the line key again.
- Previewing a non-ringing (alerting) or non-manual held line other than the line you
are active
on.
- While in TALK or CONFERENCE
- Press PREVIEW Key and the PREVIEW LED comes on
- Press the non-ringing/alerting line and Preview of line, Currently not possible
is displayed for a programmed amount of time (Preview-Display timer = 8 seconds
default).
- To preview another line, press the LINE key of the line to be previewed.
- Previewing an idle line.
- While in TALK or CONFERENCE
- Press PREVIEW Key and the PREVIEW LED comes on
- Press an idle line and PRESELECTED is displayed for a programmed amount of time
(Preview-Display timer = 8 seconds default).
- To select the idle line, press the same LINE key while preview display is
active. Note: If the user is active on another line, disconnect and automatic hold
rules for line keys shall be honored.
- To preview another line, press the LINE key of the line to be previewed.
Deactivation Sequences
- A keyset user must deactivate preview mode prior to answering a call
(line).
- Time-out: There is no time-out for preview "mode".
- Pressing any key other than a line key after pressing the Preview key.
- User going off hook while the keyset is idle (with or without any line appearances
on
hold) will deactivate preview mode and, if preview display information is present
for a
line, will select that line.
- User going on hook, e.g., to terminate existing call or to go to hands-free
operation.
Feature Interactions
- Upon deactivation, the preview function ceases and the Preview key LED
is deactivated.
- Upon deactivation or after time-out of the display of the previewed information, the
following shall be displayed, dependent upon priority:
- Elapsed Time display will be displayed.
- Dialog options (e.g., feature prompts) for TDM telephones will be displayed.
- Pending call information will be displayed.
- Displays during idle state, e.g. time and date.
- A user selection of another feature or function other than a line key for preview,
shall
overwrite active line preview information display, in response to the user.
- Upon initialization or re-initialization of the telephone.