Telephone Network Data Card

Key Specifications/Special Features:

• Features as a voice/fax card:
  • Enable high-density applications
  • Signaling functions such as loop secure, current detection and ring are controlled and monitored through the host-PC interface
  • Toll quality voice encoding and decoding
  • Supports for caller ID calling party number retrieval
  • Transient protection circuitry for high reliability voice format, provides variable voice coding at 24/32Kbps ADPCM (vox), 64Kbps A-law PCM and 64/128Kbps A-law/linear waves
  • Configure multiple boards in a single chassis, PCI bus for easy and cost-effective system expansion of up to 128/256 analog ports
  • Four or eight fax processing ports in a single PCI slot, up to 14,400bps(V.17) fax with
  • ITU-T Group 3
  • Industry-standard CT bus
• Features as VoIP card:
  • Supports different protocol dynamically, for example G.723.1
  • G.165/G.168 compliant 64ms echo cancellation
  • Supports H.323 V4, automatic gatekeeper discovery
  • Supports G.711 A-law/U-law, G.729/A/B/AB, GSM610, G.723.1 5.3/6.3
  • Tone generation and local DTMF re-generation according with ITU-T
  • E.164 dial plan and customized dial rules
  • DTMF dialing
  • Adjustable volume
  • RAS and signal port can be changed
  • CNG (comfort noise generation)
  • VAD (voice activity detection)
  • Dynamic voice jitter buffer
  • Bad frame interpolation