VoIP Processors (Chips) for IP Phones

Orchid IP Phone Toolkit (AC495E/AC494E)

AC494E / AC495E

The Orchid family is the next-generation AudioCodes System on Chip (SoC) device that integrates Gigabit Ethernet, security capabilities and superior voice quality features, combining the AC494E, AC495E and the AC496D. The Orchid devices are dual-core based on MIPS 24KEc RISC CPU at 300MHz and AC49x-DSP at 150 MHz allowing ODMs and OEMs to develop IP Phones, Gateways and IP-PBXs with enhanced data and voice performance. These devices are based on VoIPerfectHD™ architecture (High Definition VoIP) support, AudioCodes’ underlying, best-of-breed, core media gateway technology for all of its products.

Gigabit Ethernet Support

The AC494E and AC495E integrates a gigabit Ethernet (10/100/1000 Mbps) switch and two Fast Ethernet (10/100 Mbps) transceivers, allowing for the optional development of traditional Fast Ethernet IP Phone designs without the additional cost of adding external transceivers. The two Ethernet media access controllers (MAC) support a high-speed and flexible switching mechanism that connects the IP Phone or ATA to PCs and/or a local area network (LAN) via three Gigabit Ethernet ports. The AC494E and AC495E also features two 10/100 Ethernet PHYs, enabling developers to design a cost-effective phone when gigabit technology is not required.

Security Capabilities

The Orchid devices are integrated with hardware accelerators that eliminate possible latencies, ensuring transparency to users. The Security Accelerator engine speeds processing of a variety of security algorithms. These include AES, DES, and 3DES encryption, SHA1 and MD5 authentication, Public Key Acceleration (PKA), and Random Number Generation (RNG). In addition, these devices feature a static packet filter for protection against Denial-of-Service (DoS) attacks.

Development Toolkits

The Orchid devices are available with toolkits combining software and hardware reference designs allowing ODMs and OEMs to reduce system design times. The toolkits couple the hardware with a complete Linux software suite supporting voice and network protocols, call features and management applications. This software is available in source code allowing customers to easily differentiate themselves.


In a single chip, the AC495E combines all IP Phone components, including a MIPS 24KEc CPU, AC49x DSP and a 3-port Ethernet Switch (MACs and PHYs) together with a rich set of peripherals such as internal CODECS and serial ports. On-chip peripherals include a 24-bit color LCD controller, 8 x 8 keypad interface, USB controller and two serial UARTS.

AC495E IP Phone Reference Design

  • 10/100/1000 Eth interfaces
  • Security Accelerator Engine
  • High resolution 24 bit LCD
  • HD VoIP support
  • Bluetooth and USB accessories support
  • Integrated 125 MHz CPU

 AC495E SoC Block Diagram


The AC494E is a single chip which combines the main Gateway/IP-PBX components; it includes a MIPS 24KEc CPU, AC49x DSP and 3-port gigabit Ethernet Switch together with a set of peripherals. The AC494E is integrated with PCM (TDM) interfaces allowing connection with analog devices such as FXS, FXO and BRI. The AC49x-DSP integrated inside the AC494E can support up to 4 VoIP channels and together with the VLYNQ high speed serial interface extra AC498-DSP devices can be added with support up to 16 VoIP channels.

AC494E GW/IPPBX Reference Design

  • 10/100/1000 Ethernet interfaces
  • Security Accelerator Engine
  • Integrated 300 MHz CPU for IPPBX applications
  • USB and SD Storage support
  • Up to 16 FXS/FXO/BRI configurable ports support
  • HD VoIP support
  • Embedded Asterisk IP-PBX application is available


 AC494E SoC Block Diagram