Oki Semiconductor
Announces First Low Cost Speech CODEC with Specific Combination of Speech Coding
and Telephony Functions Sunnyvale, CA, December 2, 2002
— Oki Semiconductor, a leading technology partner for the new era of digital
communications and convergence, today announced the ML7074,
a speech CODEC designed specifically as an analog front-end for Voice over IP
(VoIP) applications. Oki Semiconductor's new CODEC is optimally suited for
adding VoIP functions to terminal adapters, routers, business phones and other
technologies, as it has many of the same characteristics of an echo canceller
for 32 msec delay, tone detection and generation, and dual tone multi-frequency
(DTMF) detection. The echo canceller incorporated in the ML7074
is not only effective for near-end line echoes in SLIC connection, but also for
cancellation of acoustic echoes if the system supports hands-free operation. It
has a 3.3V power supply, and supports high quality straight pulse code
modulation (PCM) data all the way up to the data-rate conscious ITU-T G.729.A
format.
"With the introduction of the ML7074,
Oki Semiconductor is one of the key telecom vendors to respond to market demand
for a CODEC that requires a specific combination of speech coding and telephony
functions at a reasonable price," said Eric Nguyen, senior product marketing
manager for telecom products, Oki Semiconductor. "Currently available all-in-one
solutions are more expensive than necessary for most practical VoIP purposes."
The ML7074
has a pin-selectable PCM interface along with the conventional analog terminal
side interface, which enables customers to reuse proven analog designs with new
and enhanced VoIP capabilities. This feature allows designers to support both
digital and analog VoIP systems.
Other features of Oki Semiconductor's ML7074-001 include:
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