Dialogic M7324 User Manual

to the display. The calling number ID data sent from the PBX to the station set 
differs from the calling number ID data presented on the display.  

If placing a call to another extension, the called number ID (by default, the 
extension of the telephone being called) is shown in the display.  

Both the calling and called number IDs can be retrieved using the 
d42_gtcallid( ) function. The d42_gtcallid( ) function retrieves the 
called/calling number ID message sent from the PBX to the station set, not the 
data sent to the display. Refer to the Dialogic

Reference for more information about using d42_gtcallid( ) function. 

The contents of the called/calling number ID are shown in 

 (as seen 

by the receiver of the call). 

Call received from station set 221 

_221 

Call originally received by extension 
221, then forwarded to extension 224  

224_221 

The called/calling number ID can also be obtained using the 
d42_display( ) function; however, you can use the d42_gtcallid( ) 
function so that your application will maintain functionality across 
different manufacturers’ switches. 

Known Anomaly with Forwarded Call for Hicom 150 PBX: The called and 
calling ID for the various supported integrations (with the exception of 
Norstar) are retrieved from the display. The method involves the retrieval and 
parsing of the display when the LED flashes for Ring. The display is not 
refreshed during the lifetime of the call. Therefore, this method gives incorrect 
call ID information for Hicom 150 for the forwarded call. The reason for the 
incorrect information is that the PBX does not provide a display with both 
calling and called IDs when a forwarded call is received.  

For example, the display below is obtained if extension 109 calls extension 
108, then extension 108 forwards the call to a port.