The TC400P provides hardware transcoding
of VoIP codecs; decreasing Asterisk's work load and
providing improved CPU efficiency and an increase in channel
density over a software-only solution. The TC400P provides
Asterisk with full transcoding support and hardware
acceleration for the G.723.1 and G.729A codecs.
The TE420P improve upon Digium's existing TE411P and TE406P.
These premium interface cards provide carrier-grade echo
cancellation, Voice Quality Enhancement (VQE), DTMF
decoding, and tone recognition. Both cards minimize loads on
the processor and PCI bus, and are designed to perform in
the most difficult environments. The TE420P support
128ms of G.168 (2002)-compliant echo cancellation across
their entire 128 channels.
Digium designed these solutions to be fully compatible with
existing software applications and is completely integrated
with the Asterisk platform. Additionally, the open source
driver supports an API interface for custom application
development. All new solutions support industry standard
telephony and data protocols, including Primary Rate ISDN
(both North American and Standard Euro) protocol families
for voice, PPP, Cisco, HDLC and Frame Relay data modes.