AC496 VoIP Toolkit
The AC496 ATA Toolkit is a combined hardware and software ATA reference design based on the AC496 System on Chip (SoC). The AC496 SoC (System on Chip) provides ATA developers and manufacturers with single chip field-proven complete ATA solution, integrated with superior voice quality at a competitive price.
AC496 SoC (System on Chip)
In a single chip, the AC496 combines the main ATA components; including a MIPS 4KEC CPU, AC49x DSP and a 3-port Ethernet Switch (MACs and PHYs) together with a rich set of peripherals. The AC496 is based on the VoIPerfectHD™ architecture (High Definition VoIP) support, AudioCodes' underlying, best-of-breed, core media gateway technology for its product line. Utilizing its highly integrated structure and requiring only a minimal number of peripheral devices, time to market is rapid with little risk.
Development Platform and Reference Design
The AC496 ATA VoIP Toolkit is a combined hardware and software ATA reference design. The AC496 ATA VoIP Toolkit is based on the AC496 System on Chip (SoC) family. In a single chip, the AC496 combines the main ATA components, inlcuding a MIPS 4KEC CPU, AC49x DSP and 2-ports MACs/PHYs together with a rich set of peripherals. The hardware reference design includes the AC496 and FXS and FXO modules.

AC496 ATA Toolkit Hardware Design
ATA Software Development Kit (SDK)
The AC496 ATA VoIP Toolkit couples the hardware with a complete Linux software suite supporting voice and network protocols, call features and management applications. The software is available in open source code and consists of separate modules which allow customers to easily differentiate themselves.

AC496 ATA Software Architecture
Toolkit Contents
- Reference Design & Development Platform based on AC496-SoC
- Ready-to-use scalable ATA modules
- FXS, FXO and BRI modules
- Linux Operating System (Kernel 2.6)
- Free Development Environment (Linux Tool-chain)
- Ready to use VoIP ATA Application (open source code)
AC496 Tulip ATA/AC496 Tulip 2
The AC496 Tulip and AC496 Tulip-2 are complete, ready to-use reference designs of an ATA and Gateway with data routing capabilities. The AC496 Tulip supports two FXS/FXO ports and the AC496 Tulip-2 supports four FXS/FXO ports. AudioCodes field-proven VoIPerfectHD™ DSP software and the integrated AC496 System on Chip (SoC), the AC496 Tulip and AC496 Tulip-2 offer OEMs and ODMs an excellent and cost-effective solution for the rapidly growing residential and Small Office/Home Office (SOHO) VoIP market.
The AC496 Tulip and AC496 Tulip-2 have a cost-effective Bill of Materials (BOM) to support aggressive market cost demands. An additional data port provides the option to convert a PC to the ATA without supplementary hardware. Special attention was given to designing the hardware and PCB to shorten customer investment in the homologation process.
AC496 Tulip ATA key features
- Production Ready Analog Telephone Adapter (ATA) Reference Design
- Available as a module or through production license
- Data Routing Capabilities
- Minimizing risk and allowing quick time to market for ODMs and OEMs rolling out VoIP-based services
Channel Density
- Up to 4 FXS/FXO line interfaces
Hardware
- CPU – MIPS32 4KEC, 165 Mhz
- DSP – AC49x, 125 Mhz
- 2 Integrated 10/100 Base-T MAC/PHY ports
- Integrated 3-port layer-2 Ethernet Switch
- Integrated SSP (SPI/I2C) Controller
Telephony Signaling
- DTMF – Detection and Generation, TIA464B
- Caller ID – Telcordia/ETSI/NTT Type I/II (on hook/off hook)
- Programmable Call-Progress Tones
Packetization
- RTP/RTCP Packetization – RFC 3550, 3551, 2198
- DTMF Relay - RFC 2833
Security
- SRTP (Secured RTP) per RFC 3711, 128 bit AES, HMAC SHA1
Telephony Support
- FXS and FXO supported
Media Processing
- Voice Coders - G.711, G.723.1, G.729A/B, G.726, GSM FR, iLBC
- Wideband Coders – G.722, G.722.2 (WB-AMR), G.711.1
- Fax – T.38 Relay, Bypass , T.38 over RTP
- Echo Cancelation – G.168-2004 compliant, 64 msec tail length
- Silence Suppression – VAD, CNG
- Adaptive Jitter Buffer 300 msec
Telephony Features
- 3-Way conferencing (on each line)
- Call Forward
- Call Hold
- Call Transfer
- Call Waiting
Data Protocols
- IPv4, TCP, UDP, ICMP, ARP
- PPPoE
- Layer 2 switching
- DHCP Client/Server – RFC 2132
- WAN to LAN Layer-3 routing
- DHCP Client/Server – RFC 2132
- NAT – RFC3022, Application Layer Gateway (ALG)
- IEEE 802.1p/q QoS (VLAN tagging)
VoIP Signaling Protocols
- SIP - RFC 3261, 3262, 3263, 3264, 2327
Configuration/Management
- Embedded Web
- TFTP
- FTP
- Telnet
- Filesystem support
Operating System
- Linux Kernel
- Board Support Package
- Complete ATA/CPE Gateway VoIP solution
- Up to 4 FXS/FXO line interfaces with assembly options
- 3-Way conferencing per line support
- VoIPerfectHD™ (High Definition VoIP) support, enabling superior voice quality at a competitive price
- Field-proven VoIP processor and software
- Perfect platform for stand-alone ATA developers
- Production Ready Hardware and Software Reference
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Datasheets

