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AudioCodes Enabling Technology Products
AC48304
Voice over Packet Processor for Client Applications
The AC48304 is an ideal voice processing engine for a variety of Voice over IP, Voice over DSL and other voice over packet client applications. The AC48304 VoP processor is a four ports voice over packet processor that combines toll quality low bit rate voice compression, T.38 compliant fax relay and other voice band processing functions. Field-proven, feature-rich software enables the rapid development and fast time-to-market of the complete solution. The AC48304 is based on VoIPerfect architecture, AudioCodes underlying, bestof-breed, core media gateway technology for all of its products.
Deliver Feature-Rich Solution

Low per-channel cost and power Independent channel operation Toll quality voice compression Robust bandwidth-saving fax relay
The AC48304 voice over packet processor combines four channels of toll quality low bit rate voice compression, with an adaptive G.168-2002 compliant echo canceller, and complete voice band processing functions in a single device. Field-proven G3 Fax Relay, compliant with the T.38 ASN.1 standard, is a major enhancement to the AC48304 offering. Other advanced features include dynamic packet size programming, high quality DTMF/MF R1/MF R2/Call Progress Tones, detection and generation of user defined tones and Caller ID, silence suppression, and automatic voice/fax/data discriminator.
Small footprint Proprietary evaluation & development tools Lead free available
The AC48304 is supported by the VoicePacketizer TM software stack which enables the processor to create a VoIP-compliant media stream as part of a client entity. The VoicePacketizer is an ANSI-C software stack that supports the RTP/RTCP protocol. The software stack also provides a simple API for initialization and configuration of the AC48304 and for run-time call control.
Fast Integration with Software Stacks
Software Upgrades
The complete functionality of the AC48304 is implemented in the internal DSP software. The software image is downloaded into the AC48304 by the host processor prior to start of operation. This allows the addition of new features in future product releases without any system hardware modifications.
Benefit from Extensive Experience
AudioCodes is one of the worlds leading providers of DSP solutions since 1996. During this period, the company successfully passed numerous interoperability tests while maintaining high levels of performance. AudioCodes commitment to innovation yields consistently high-quality voice processing products that are feature-rich and field-proven. AudioCodes has deployed over 12 million VoP ports to date.
AC48304 Features

Low bit rate Vocoders Low power consumption & small footprint G.168-2002 compliant Echo Canceller T.38 compliant Fax Relay In Band Signaling detection & generation Caller ID detection & generation
AudioCodes Enabling Technology Products
AC48304
Specifications
Software Specifications
Applications
Four low bit rate G.729 AB CS-ACELP at 8 kbps G.723.1 MP-MLQ at 6.3 kbps, ACELP at 5.3 kbps G.727 E-ADPCM at 16-40 kbps G.726 ADPCM at 16-40 kbps G.711 PCM (-Law/A-Law) at 64 kbps NetCoder(R) at 6.4-9.6 kbps, 800 bps steps Automatic switching G3 2.4 - 14.4 kbps, T.38 compliant fax relay or automatic switch to PCM Up to V.92 rates, automatic switch to PCM G.168-2002 compliant 25 msec tail length Telcordia (Bellcore) Type 1 & 2, ETSI Type 1 & 2 NTT Number Display DTMF (TIA 464B), MFR1, MFR2, AC15, SS4, SS5, User Defined and Call Progress tones CAS ABCD (when connected to Standard Framers) Conferencing of two IP participants with one PSTN participant 1 msec -31dB +31dB, 1.0 dB steps 2.048, 4.096 or 8.192 Mbps, -Law/A-Law (selectable) 8 bit Bidirectional +1.8V (core), +3.3V (I/O) 3.3V logic compatible 180 mW (typ) 144 pin TQFP
Channel Density Voice Coders

Small Residential Gateways and IADs Cable Telephony Access Devices Voice over IP Gateways SOHO Voice/data/fax Access Devices DSL Access Devices Voice-enabled Set-top Boxes
Voice/Fax/Data Fax Support Modem Support Echo Canceller Caller ID Detection and Generation In-band Signaling Detection and Generation Out-of-band Signaling Three-Way Conferencing E&M Sampling Resolution Input/Output Gain Control
Hardware Specifications
PCM Interface Host Port Interface Power Supply Digital Interface Levels Power Consumption Package
AudioCodes Ltd. (NASDAQ: AUDC) enables the new voice infrastructure by providing innovative, reliable and cost-effective Voice over Packet technology and Voice Network products to OEMs, network equipment providers and system integrators. AudioCodes provides its customers and partners with a diverse range of flexible, comprehensive media gateway and media processing technologies, based on VoIPerfect AudioCodes underlying, best-of-breed, core media gateway architecture. The company is a market leader in voice compression technology and is a key originator of the ITU G.723.1 standard for the emerging Voice over IP market. AudioCodes voice network products feature media gateway and media server platforms for packet-based applications in the converged, wireline, wireless, broadband access, and enhanced voice services markets. AudioCodes enabling technology products include VoIP and CTI communication boards, VoIP media gateway processors and modules, and CPE devices. AudioCodes headquarters and R&D facilities are located in Israel with an R&D extension in the U.S. Other AudioCodes offices are located in Europe, the Far East, and Latin America. International Headquarters 1 Hayarden Street, Airport City Lod, Israel 70151 Tel: +972-3-976-4000 Fax: +972-3-976-4040 US Headquarters 2099 Gateway Place, Suite 500 San Jose, CA 95110 Tel: +1-408-441-1175 Fax: +1-408-451-9520 info@audiocodes.com www.audiocodes.com
(c) 2005 AudioCodes Ltd. All rights reserved. AC, Ardito, AudioCodes, AudioCodes logo, AudioCoded, IPmedia, Mediant, MediaPack, MP-MLQ, NetCoder, Stretto, TrunkPack, VoicePacketizer and VoIPerfect are trademarks or registered trademarks of AudioCodes Ltd. All other marks are the property of their respective owners. The information and specifications in this document and the product(s) are subject to change without notice. Ref # LTRT-36701 08/05 V.1
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