Software Specifications

Voice Capabilities
Wireline & Wireless Speech Codecs
Audio Codecs
 
  • WMA9 (decode only)
  • AAC*
Conferencing
(for fully-populated 8xDSP board)
  • N-way: 1360
  • 3-way: 720 bridges

    • For more information, see "Typical Channel Densities" table on specific product pages: SurfRider/AMC; SurfRider-812/PTMC; SurfExpress/PCIe; SurfAce-112/PCI
Echo Cancellation G.168 2002 echo tail up to 128ms
Quality
  • Voice Activity Detection (VAD)
  • Comfort Noise Generation (CNG)
  • Packet Loss Concealment (PLC)
  • Fixed/Adaptive Jitter Buffer up to 1000 ms
  • Auto Gain / Level Control (AGC / ALC)
Transport
  • RTP/RTCP: RFC 3550, 3551, 3389
  • Configurable packet size: 5-60ms (5ms resolution)
  • Single or multiple frames per packet
Tone and Events
  • Monitoring
  • Relay (RFC 2833)
  • Caller ID detection and generation
  • Detection/Generation
  • User-defined tones
Conferencing & Streaming
Conferencing
  • Up to 256 TDM or IP audio conferencing participants on a single DSP
  • Dominant speakers detection
  • Up to 96 active video participants
  • Up to 16 displayed participants
  • Configurable video conference layouts
  • Text and image overlay on conference output
Streaming
  • Play/Record of any channel from/to file
  • Supported file formats
  • 3GP
  • MP4
  • ASF (WMV9)
  • AVI*
  • Supports more than 1000 concurrent G.711 streams
Video Capabilities
Video Codecs
(encode & decode)
  • MPEG-4
  • H.263
  • H.264
  • WMV9 (decoder only)
  • MPEG2*
Resolution
  • Any up to CIF
  • VGA/D1/4CIF*
Frame Rate
  • 1-30FPS
Bit Rate
  • Constant and variable
Transport
  • RTP Encapsulation
  • MPEG-TS*
Quality
  • Configurable deblocking levels
  • Multiple destination support
  • Packet Loss Concealment (PLC)
  • Fixed/Adaptive Jitter Buffer up to 1000 ms
Advanced Video Toolbox
  • Dynamic text overlay (Unicode)
  • Configurable frame rate
  • Bit rate change
  • Any resolution resize
  • Logo insertion
Mobile Video Capabilities
3G-324M Support
  • H.324 Annex C
  • H.223 Annex A & B
  • High-level 3G-324M APIs
Protocols
  • H.223 running on the DSP for enhanced performance
  • H.245 running on the host
  • MONA* (H.324 Annex K - fast connect)
Fax Capabilities
Data Pumps
  • V.17, V.29, V.27ter, V.21
Fax over IP: T.38
  • FEC/Redundancy
  • Max Jitter 1 sec
  • Supported roundtrip delay up to 6 sec
IP-Aware Fax
  • T.32 to T.38
Modem over IP Capabilities
Data Pumps
  • Up to V.92 (including V.42/V.42bis)
Modem over IP (MoIP)
  • V.8 modem relay as per ITU V.150.1 (contributed by Surf)
  • Universal modem relay (U-MR)
Connection Scenarios
  • Voice Band Data
  • MR1