AC48116A-C
High Density PCM / ADPCM Voice over Packet Processor
Features
Full trunk with two chips
Complete voice-band
subsystem
Fast time-to-market
Independent multi-channel
operation
16 G.711(PCM) channels with 15ms echo
canceller
12 G.711 (PCM) channels with 25ms echo
canceller
8 G.711 (PCM) channels with 50ms echo
canceller
6 G.711 channels with 60ms echo canceller
or 6 G.726 (32 kbps ADPCM) channels with
10ms echo canceller
Proprietary silence suppression
High performance Voice Activity Detector
(VAD) and Comfort Noise Generator (CNG)
Fax and modem signals detection
DTMF, MFR1, MFR2, AC15, SS4, SS5, call
progress and user-defined tones detection and
generation
G.168 compliant adaptive echo canceler
Highly efficient packet interface to the
host CPU
Dynamic packet size programming
Optional on-chip adaptive jitter buffer
Optional caller ID support
ABCD trunk signaling
PCM highway trunk interface for voice
and signaling
Input and output gain control
Description
Carrier-class Voice over IP
Gateways
Voice over ATM access
devices
Multi Service Access
Platforms
Edge Switching Equipment
The
AC48116A-C
is a complete DSP solution for high-density, carrier class Voice over IP gateways
or Voice over ATM access and edge switching products.
The
AC48116A-C
supports up to 16 non compressed full-duplex Voice over Packet Network
channels. The device combines toll quality PCM or ADPCM coding with long tail echo cancellation
and high quality DTMF detection and generation. Fax or modem transmissions are passed
transparently (in PCM) by the device with no performance degradation.
Running
m/A-law
G.711 codec, the
AC48116A聳C
provides a tradeoff between the number of
channels and the echo canceller tail length: 16 channels with 15ms tail length, 12 channels with
25ms tail length, 8 channels with 50ms tail length or 6 channels with 60ms tail length.
For high-quality, "light" compression requirements, the chip supports 6 channels of G.726 (32 kbps
ADPCM) codec. An adaptive, G.168 compliant echo canceler and a high quality DTMF and Tone
Signaling detector and generator constitutes the ideal voice processing system on chip.
The
AC48116A-C
transforms the digitized signals into packets, ready to be transported over packet
networks such as IP, Frame Relay or ATM. Integrating the
AC48116A-C
into the user's application
is facilitated by a hardware application note and by host CPU drivers supplied by AudioCodes.
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