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VoIP Technology Products

VoIP Processors

Echo cancellation

Low bit rate vocoders

T.38 compliant fax relay

VoIP Processors

Comprehensive line of voice over packet (VoP) processors and modules


AudioCodes develops a comprehensive line of voice over packet (VoP) processors and modules, suitable for OEM implementations of voice communications over packet networks.

Each processor features low bit rate vocoders, state-of-the-art echo cancellation and T.38 compliant fax relay. In addition, our field-proven, feature-rich software enables solutions to be developed rapidly, thereby minimizing time-to-market. The VoP chip processors are suitable for high and medium density VoIP gateways, residential gateways and integrated access devices (IAD), and for end-user applications such as small gateways, analog telephony adaptors (ATA) and IP phones.


  • Field-proven technology with millions of channels deployed
  • Feature-rich algorithms and software cover all VoIP functions and applications


  • Integrated DSP (VoIP processors) and SoC (system on chip)
  • Scalable from one channel to hundreds of channels per single chip

Key Features

Voice Coders G.711, G.723.1, G.729.A/B, G.726, G.727, GSM FR/EFR, AMR, iLBC, EVRC, G.722, G.722.2 (AMR-WB), Opus and more
Echo Cancellation G.168 compliant, line and acoustic EC with 128 msec tail length
Conferencing 3-way & n-way conferencing
Quality enhancements Voice activity detection (VAD), comfort noise generation (CNG), packet loss concealment (PLC), jitter buffer
IPMedia features Automatic gain control, energy and answer detectors, packet-to-packet transcoding
Signaling Inband signaling (DTMF TIA 464B, MF R1/2), detection and generation, user-defined call progress tones, out-of-band signaling, caller ID detection and generation
Data functions Voice/fax/data automatic detection and switching, fax support - T.38 compliant G3 fax relay or PCM bypass, modem support
Security SRTP, 128 bit AES, HMAC SHA1
Packetization RTP/RTCP, DTMF relay
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