Posts Tagged hardware
Digium Releases TCE400B PCI-Express Transcoder Card
Digium TCE400B
Digium releases the TCE400B PCI Express card for use with voice applications based on the open source Asterisk telephony platform. The new card provides hardware-based voice compression and decompression (codec) capabilities to shift transcoding from software to hardware. Using the TCE400B in place of a software-only solution places fewer demands on servers and frees up Asterisk to more efficiently process calls and to provide functionality for phone systems such as call recording, conference calling and interactive voice response.
The TCE400B is a half-length, low-profile PCI-Express x1 card for transforming complex VoIP codecs into simple codecs. This product is, essentially, a PCI-Express version of Digium’s existing TC400B product.
DAHDI Linux and DAHDI Tools 2.2.0 Released
Posted by admin in astribanks, dahdi, dahdi-linux, dahdi-perl, dahdi-tools, digium, hardware, vpmadt032, xorcom on June 24, 2009
DAHDI - Digium Asterisk Hardware Device Interface
The Asterisk Development Team is pleased to announce the release of DAHDI Linux 2.2.0 and DAHDI tools 2.2.0. Both releases are available for immediate download at http://downloads.asterisk.org/pub/telephony
In addition to various bug fixes, these releases include:
- Support for new Xorcom Astribanks with the TwinStar ™ option.
- Improved hardware echo canceler performance for Digium VPMADT032.
- Improved fax tone detection and echo canceler / fax handling.
- Improved timing accuracy of dahdi_dummy, including when running in virtual environments.
- New buffering policy (DAHDI_POLICY_HALF_FULL) which can help faxing performance.
- Fixes for Dahdi-perl for non-Xorcom hardware.
- BRI Astribank modules no longer need the bri_dchan patch.
- Explicit ordering of Astribanks for multi-Astribanks setups.
Please report issues found in these releases on http://issues.asterisk.org/.
For a full list of the changes in these releases, please see the ChangeLog:
http://downloads.asterisk.org/pub/telephony/dahdi-linux/ChangeLog-2.2.0
http://downloads.asterisk.org/pub/telephony/dahdi-tools/ChangeLog-2.2.0
Thank you for your continued support of Asterisk!
Digium TC400B
Digium TC400B
The TC400B is a half-length, low-profile PCI 2.2-compliant card for transforming complex VoIP codecs into simple codecs.
Overview:
The TC400B is a bundle of the half-length, low-profile PCI-2.2 compliant TC400P base card and the TC400M voice processing module. The TC400B is designed to handle, in dedicated DSP resources, the complex codec translations for highly compressed audio as would otherwise be processed by Asterisk in software.
Asterisk, in software and with Digium G.729a licensing, is capable of transforming the G.729a codec into other codecs for the purposes of call origination or termination, bridging disparate calls, or VoIP to TDM connectivity. These transformations in software are very expensive, in terms of MIPS, and require a substantial amount of CPU time to accomplish. The TC400B not only relieves the CPU of this duty, freeing it up to handle other tasks or to complete additional call processing; but also provides Asterisk with the capability of bridging G.723.1 compressed audio into other formats, a capability not previously possible.
The TC400B decompresses G.729a (8.0kbit) or G.723.1 (5.3kbit) into u-law or a-law; or, compresses u-law or a-law into G.729a (8.0kbit) or G.723.1 (5.3kbit). The TC400B is rated to handle up to 120 bi-directional G.729a transformations or 92 bi-directional G.723.1 transformations. The TC400B does not require additional licensing fees for the use of these codecs nor does it require the registration process associated with Digium’s software-based G.729a codec licensing.
TC400B Documentation:
Manuals
01.26.2007 – TC400B User’s Manual (PDF)
Datasheets & Brochures
07.01.2008 - TC400B Datasheet (PDF)
Agreements & Policies
08.02.2007 – Digium End-User Purchase and License Agreement (HTML)
