VoIP System Solution

Voice-over-Internet-Protocol (VoIP) technology is one of the factors driving the convergence between traditional voice networks such as the Public Switched Telephone Network (PSTN) and data networks such as the Internet. Utilising its SuperH CPU technology and software expertise, Renesas offers a low cost hardware and software solution for implementing VoIP designs in a variety of applications. The solution provides the essential building blocks for real-time voice processing that requires the highest level of quality of service (QoS) and interoperability.
System designers can now quickly and economically integrate VoIP functions into modems, telephones, set-top-boxes, fax machines and many other products.


SH3-DSP:


  • High performance processor with integrated DSP for multiple voice channel support (number of channels depends on codecs used)
  • Low cost, low power design eliminating need for separate DSP and memory subsystem.

Full software solution:


  • Operating systems:
          Vxworks (WindRiver)
          WinCE (Microsoft) being developed
          Linux being developed
  • Middleware
          Embedded H.323 call control
                No dynamic memory allocation
                Small static / dynamic footprint
                ITU version 2 compliant
          ITU-T standard speech compression modules
                G.711, G.722, G.723.1, G.726, G.728, G.729, G.729A, G.729E
                Most annexes / appendices supported
          Line echo cancellation
                G.165/G.168 compliant
                8-32ms programmable tail length
          Call progress tones
                ITU Rec. E.180/X.96, N. America
                Dial tone, Busy, Ring
          Caller ID
                TR-NWT-000031/001188/000575
                Bellcore GR-30/V.23
          DTMF
                Q.23/Q.24
          Jitter-buffer
          Video CODEC
                ITU H.263baseline QCIF resolution
          Full-duplex speakerphone
                G.167 compliant acoustic echo cancellation
          16-98ms programmable tail-length
  • Reference/Development Platform
          Available as above

Contact Renesas for the latest SH3-DSP roadmap
Application Flyer : Renesas VoIP Solution