Service manual

EXTERNAL SERIAL CONTROL PROTOCOL
B-16
April 2001
Part No. 001-9800-203
Device Action: Write to the indicated display field
the ASCII text.
Data
: Eight ASCII characters. Characters are
mapped first character out to left most display
position and fill to the right. Characters written
past the right most display area are truncated. A
single character written to the middle of the
display area must be left justified with spaces
by the subscriber unit.
WRITE ICON FIELD
Function: This message updates the icon field of
the display device. Icons are bit mapped. A “1”
in the bit map indicates an active icon, and a “0”
indicates an inactive icon.
Device Action
: Modify the displayed icons.
Format
:
Data
: Icon bit map (follows the LCD icon mapping
artwork).
WRITE INDICATOR FIELD
Function: This message updates the indicator field
of the display device. Indicators have the prop-
erty of color or intensity encoded in two bits.
Device Action
: Modify the indicator field using the
INDICATOR ACTION and bit map. The low
two bits of the data field contain the indicator
property (color or intensity).
Format
:
Subcode
:
0x40 - Backlight (intensity)
0x41/0x43 - reserved (intensity)
0x45 - TX/BUSY indicator (color)
0x46 - 0x4f reserved
Data
:
The bit pair assignment for color: 00 = off,
01 = Red, 10 = Green, 11 = Orange
The bit pair assignment for intensity: 00 = off,
01 = dim, 10 = mid, 11 = bright
EVENT GROUP SELECT
Function
: Directs subscriber unit to go to the indi-
cated group in the currently selected system or
notify external devices of a new group.
Format
:
Group
: Any valid group index obtained from an INFO
GROUP NAME message (see page B-19). Be sure
to use the Group Index number and not the Group
Display number or ID.
EVENT HOOK SWITCH
Function
: This indicates if the microphone is on-hook
or off-hook.
Origin
: Any device on bus
Subcode Data
Write character field 8 ASCII characters
Line1/Line2
0x21/0x22
Subcode Data
Write Icon field ICON MAP
0x30 16 bits
Subcode Data
Write indicator field INDICATOR
color/intensity
0x4x 8 bits
Opcode Group
8 bits 1 byte
0x20