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Dialogic
®
PBX Integration Board User’s Guide
• places outbound calls and automatically reports the result
• retrieves called/calling number ID to enable calls to be intelligently handled
• activates/deactivates message waiting indicators to provide message
notification
• supports two fax channels at any given time
• allows supervised (recommended) and blind transfers for automated
attendant applications
• provides positive disconnect supervision to immediately detect when a caller
has hung up
• enables development of applications across a variety of PBX systems using
the unified API.
3.3.2. Functional Description
The Dialogic
®
PBX Integration Board can connect to several different PBXs,
each of which has one or more compatible telephones with which it
communicates. The PBX Integration Board can emulate these telephones, which
have Feature Keys and LCD displays for accessing and employing advanced
features of the compatible PBXs.
Each of the four or eight line interfaces on Dialogic
®
PBX Integration Boards can
receive voice and control data from the connected PBX. The voice data is
compressed by a DSP using one of the available encoding methods and then sent
to the host PC to be stored.
Control data from the PBX switch passes through the digital duplexer on the
Dialogic
®
PBX Integration Board to a command processor, where it is converted
from its native format. The resulting serial bit stream is then converted into a
parallel bit stream that is sent via the local bus to the on-board control processor,
which either acts on the information or passes the event to the application (see
Figure 1).
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