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● Frequency response: 100 Hz – 20 kHz for handsfree speaker
● FEC (Forward Error Correction)
● AEC (Acoustic Echo Cancellation)
● AGC (Automatic Gain Control)
● CNG (Comfort Noise Generation)
● VAD (Voice Activity Detection)
● PLC (Packet Loss Concealment)
● Silence Suppression *
● Acoustic Shock Protection (Handset/headset)
● Adaptive Jitter Buffer
● Dual Tone Multi-Frequency (DTMF) tone generation (RFC 2833 and in-band)
● Cisco HD audio, TIA-810/920 and ETSI ES 202 737/738/739/740 compliant
● Cisco smart audio
◦ Conventional and AI based background noise and voice removal for sending side
◦ Conventional and AI based background noise removal for receiving side (9861 and 9871)
◦ Enhances the in-call experience for PSTN calls by extending low-fidelity (narrowband) audio to high-definition (wideband) (9861 and 9871)
● Ultrasonic support
● HAC (Hearing Aid Compatible) handset
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