... 2.support up to D1 with advanced AJC and PLC Picture slide show support Detailed Product Descriptionvideo phone FeaturesVideo ... : 128kbps~1MbpsPowerful video DSP with advanced AJC and PLC Video ApplicationPicture slide show supportPicture-in-PictureCamera block Voice ... 729AB and GSMAudio Codecs: MP3, AACVAD, CNG, AEC, PLC, AJB, AGCFull-duplex hands-free speakerphonestereo audio Network FeaturesSIP v1 ...