System Release 6.1 cPCI for Windows Release Guide — May 2006 14
Streaming to board
This feature enables streaming to a network interface in real time, which is essential in
applications such as text-to-speech and IP gateways. Several new functions have
been added to the Voice library. For more information, refer to the Voice API Library
Reference and Voice API Programming Guide.
Streaming echo-cancelled data to the CT bus
The ec_stream( ) and ec_reciottdata( ) functions now support streaming of echo
cancelled data to the TDM bus. The ec_getxmitslot( ) function retrieves the number
of the time slot that transmitted the echo-cancelled data. This feature is supported on
select boards and media loads. Refer to the CSP API Library Reference, CSP API
Programming Guide and DM3 Configuration Guide for more information.
Automatic gain control (AGC) configurable on a per-channel basis through new
dx_setparm( ) parameters
The new parameters for AGC have the prefix DXCH_AGC_. Previously AGC was
configurable on a board basis. For more information, refer to the Voice API Library
Reference and Voice API Programming Guide.
Playback pause and resume
This feature allows a playback to be paused and then resumed at the exact point it
was stopped without loss of data. The dx_pause( ) and dx_resume( ) functions have
been added to the Voice library. This feature is only available on DM3 boards. For
more information, refer to the Voice API Library Reference and Voice API
Programming Guide.
Support for speed control when using 6 kHz coders
Users can adjust speed via DTMF or programmatically using dx_adjsv( ). The
following coders are now supported for speed control:
• 24 kbps OKI ADPCM (6 kHz 4-bit)
• 48 kbps G.711 A-law PCM (6 kHz 8-bit)
• 48 kbps G.711 mu-law PCM (6 kHz 8-bit)
Enhancements to dx_reciottdata( )
Two new modes have been added:
• Voice activity detector (VAD) with event notification (RM_VADNOTIFY).
• Initial silence compression (RM_ISCR)
3.2 New Features for Intel NetStructure DM/IP Products
Intel NetStructure
®
DM/IP products offer zero, one, or two T1 or E1 spans plus VoIP and
media processing in a single-slot solution. The DM/IP products are designed for larger
enterprise and carrier-grade IP media gateway solutions. These products support the
H.323 and SIP IP telephony protocols as well as the Intel Global Call call control API.
Note: This release no longer supports the embedded H.323 stack and removes the associated
libipm_nettsc.dll from the release.
