
VoIP
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I23S-DF-MF
Audio Narrowband speech codec: G.711a/u, G.723.1, G.726-32K, G.729AB DTMF: In-band, Out-of-Band DTMF-Relay (RFC2833)/SIP INFO Broadband speech codec: G.722 Full-duplex Acoustic Echo Canceller (AEC) – Hands-free Mode, 96ms
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I31S-DF-MF
Audio+Video H264 Built-in HD camera (720p) Viewing angle: 110°(H), 95°(V) Main stream: 1280 *720 Sub-stream: 352*288(CIF), 704*57(D1) Audio & Video stream SIP/P2P
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