*A speakerphone combines a microphone and loudspeaker in one device, enabling Anyone over a get in touch with to talk and listen Plainly without needing to work with a headset or maintain a telephone.?? b?o v? quy?n riêng t? và b?o m?t c?a các cu?c h?p, Yealink SmartVision forty ???c thi?t k? v?i n?p b?o m?t ?ng kính t? ??ng, mang ??n cho ng??i