Technical data

166
Voice and speech features
• G.711 coding (a-law, µ-law selectable)
• DTMF detection and generation
• DTMF clamping and filtering
• Generic tone detection and generation
• Pulse tone detection
• Full-duplex voice, "barge-in"
• Voice activity detection
• Silence detection
• Human talker detection
• Fax signal detection
• G.168 echo cancellation, up to 128 ms tail length
• Recording Automatic Gain Control (ACG)
• Pitch control
• Audio tap
Voice over IP support
• G.711 voice codec (64 kbps, µ-law, A-law)
• G.726 voice codec (16, 24, 32, and 40 kbps)
• GSM voice codec (13 kbps)
• G.168 echo cancellation, up to 256 ms tail length (default 128 ms)
• Adaptive jitter buffer
• Voice activity detection (VAD)
• Comfort noise generation (CNG)
• Real Time Protocol (RTP framing)
• secure Real Time Protocol (sRTP)
Switching and Conferencing
• On-board switching and conferencing
• Automatic Gain control (ACG)