Dialogic M7324 - page 47

4. PBX Systems

• error messages

• called/calling identification

• phone status

• line selection

• Display Key prompts

The data used to display information in the LED alphanumeric display is in

ASCII format. When the telephone is not in use, the display normally shows

the date and time. The content of the display is changed automatically (e.g.,

receiving an incoming call, making an outgoing call, or activating a feature).

The Dialogic® PBX Integration Board can retrieve the information on its

alphanumeric display using the d42_displayex( ) function. The function

places the display data (50 bytes) in an application buffer. Refer to the

Dialogic® PBX Integration Software Reference for more information about

using the d42_displayex( ) function.

Example

An application uses the dx_dial( ) function and the appropriate dial string to

press keys to dial extension number 1045. The d42_display( ) function is used

to retrieve the display data and place it in an application buffer (shown below).

The information for the top row (last 25 characters) of the display is checked.

Data in bytes 00 through 05 indicate that extension 1045 is being dialed.

data 61 3D 01 00 04 05 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20

byte 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23

data 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20

byte 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

Called/Calling Number ID (within the PBX)

If receiving a call on a Dialogic® PBX Integration Board from another

extension, the PBX sends calling number ID data (by default, the extension