Unicoi Systems offers a Voice Gateway Reference Design for the residential/SOHO and small business markets. The reference design is based on the Blackfin® Processor and Unicoi Systems' Fusion™ software. The design incorporates full-featured SIP telephony, an Internet router, two RJ-11 ports for analog service, and a 4-port Ethernet switch, running on a single-core Blackfin processor.

The Unicoi Systems Voice Gateway is ideal for homes and small offices with limited space and technical expertise, and easily interfaces with DSL and cable modems. The reference design can be rapidly customized to deploy a unique and differentiated voice gateway quickly, easily and at a low BOM cost.

Unicoi Systems' Voice Gateway Reference Design is part of Unicoi Systems' suite of cost-competitive, single-processor VoIP solutions that easily scale from low channel density IP phones and terminal adapters to higher density small business gateways and channel banks.

Key Application Area

  • Communications


  • Broad RFC compliance including all major SIP, IM and Presence, Network, Media, RTP/RTCP and QoS RFCs
  • Voice Codecs including G.711A, G.723.1, G.726 and G.729A/B
  • Call manager, PSTN module and algorithms, dynamic jitter buffer, echo cancellation software, touch tone dialing, simple P2P dialing, remote software upgrades and diagnostics
  • G.168 line echo cancellers, T.38 fax relay, DTMF detection and generation, voice activity detection, comfort noise generation
  • Unicoi Systems' Fusion Real Time Operating System
  • Unicoi Systems' networking product suite including TCP/IP, BOOTP, DHCP Client/Server, DNS, NAT, OSPFv2, PPP/PPPoE, RIP/RIP2, RTP/RTCP, RTSP, SIP, SDP and SNMPv1/2/3

Example Applications

  • VoIP Gateway for residential/SOHO and small business use


Operating Systems

  • Unicoi Systems' Fusion Real Time Operating System

Supporting Components

  • Unicoi Systems' VoIP Gateway supports all the major capabilities of the Legerity LE88221/241 device

Supporting Documents



Phone: (678) 208 2250

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