Dialogic M7324 Manuel D’Utilisation

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3.  PBX Integration Overview 
This processor handles real-time events, manages data flow to the host PC to 
provide fast system response time, enables reduced PC host processing demands, 
processes DTMF and PBX signaling before passing them to the application, and 
frees the DSP to perform signal processing. Communication between this 
processor and the host PC is via the shared buffer memory that acts as an 
input/output buffer and thus can increase the efficiency of disk file transfers. This 
shared buffer memory interfaces to the host PC via the PCI bus. 
3.2.  PBX Integration Features Supported 
Dialogic
® 
PBX Integration Boards incorporate both circuitry and firmware to 
integrate applications with specific PBXs. The Dialogic
® 
Unified API, used with 
the PBX Integration Board, enables programmers to more easily develop a single 
application capable of supporting multiple manufacturers’ PBXs. The Unified 
API also enables applications to access the important digital information sent 
between a PBX and its station sets. This information can be useful in a variety of 
applications, including Voice Mail and Call Center.  
3.2.1.  Dialogic
®
 Unified API 
The Dialogic
® 
Unified API (Application Programming Interface) allows a single 
application to function on a variety of manufacturers’ switches. Functioning as an 
extension to the standard Dialogic
® 
Voice API, the Unified API offers a single 
design model that allows developers to utilize advanced PBX features (such as 
called/calling number ID and ASCII display information).  
•  Called/Calling number ID - usually two sets of digits representing either a 
trunk line or an extension. This is not to be confused with caller ID received 
from a CO, which provides the telephone number of an outside caller. It is 
important for an application to know where a call originated and to what 
extension it is intended. If a call is transferred (or “bounced”) through a 
PBX, this information may be needed by an application at the final 
destination. If it is needed and not present, the originator (if they are still 
connected) will have to re-enter the information. 
•  Retrieve LCD/LED prompts and indicators - Different PBXs have 
different types of prompts and indicators that relay status information of the 
station set. By capturing and processing this data, an application can “see” 
what prompts or indicators have been set. 
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