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Dialogic
®
PBX Integration Board User’s Guide
computer to SRAM and DSP memory when the Dialogic
®
PBX Integration Board
is started. Dialogic
®
Springware firmware offers several features, including speed
control, volume control, global tone detection, and positive voice detection.
Global tone detection allows applications to detect special intercept tones, fax
tones, modem tones, and non-standard PBX or user-defined tones, such as those
used in international networks.
Other DSP-based Dialogic
®
Springware firmware features include G.711 A-law
and µ-law PCM, ADPCM, GSM 610, and G.726 voice encoding. An application
may dynamically switch between sampling rates and coding methods to meet
specific requirements for voice quality and data storage. Enhanced algorithms
provide reliable DTMF detection, DTMF cut-through, and talk off/play off
suppression.
3.3.3. Configurations
The Dialogic
®
PBX Integration Board can connect to a line circuit board in a
supported PBX to help build a sophisticated, computer telephony system. The
PBX Integration Board installs in a platform with a minimum 90 MHz Pentium
processor or the equivalent Celeron processor with an available PCI bus slot for
an 8-port system. The host system must provide a Pentium or Celeron class
processor at 266 MHz speed or higher for a 64-port system, including eight
available PCI slots. The PBX Integration Board occupies a single expansion slot,
and up to eight boards can be configured in a system, with each board sharing the
same interrupt level. The maximum number of ports supported is 64, dependent
on the application, the amount of disk I/O required, and the host computer’s CPU.
The Dialogic
®
PBX Integration Board shares many common hardware and
firmware architectures with other Dialogic
®
products for a wide array of
flexibility and scalability. Features can be added or systems can grow while
protecting investment in hardware and application code. With only minimum
modifications, applications can be easily ported to lower or higher line-density
platforms.
3.3.4. Software Support
The Dialogic
®
development package includes libraries, drivers, and headers to
enable quick and easy PBX integration. Diagnostics and demo programs provide
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