门禁可视对讲供应商 可视对讲门禁系统 IP防水门禁机

详情描述：

TFT 特征
语音编码： G.711a/u, G.7231 high/low, G.729a/b, G.722, G.726, iLBC, AMR-NB; AMR-WB
Video codecs:H.263, H264, MPEG4
分辨率: QCIF,CIF,QVGA
图像格式: PEG GIF and BMP PNG
Video formats: MP4, 3 GP and FLV
Echo cancellation: G.168 compatible with the LEC, including hands-free(AEC)
VGS, VAD,CNG,Jitter buffer
支持双工对讲
Possibility of registering a domain or implementation of SIP calls Peer to peer
支持STUN
支持SIP SMS
Adjusting the volume in all modes(headset/handsefree/headsetwire/bell)
对比度 1000 : 1
亮度 : 450cd/m?
视角 : 178 degrees horizontal / 178 degrees vertical (at contrast ratio of 10:1)
 Screen orientation Portrait instead of landscape.