Labels:text | screenshot | font | diagram | line | number | map OCR: NATIVE ATM SERVICE PBX T-1 circuit ATM Access Concentrators emulation JAAC] T-I circuit MUX emulation T-3/OC-3/E-3 ATM User-to- WAN V.35 Constant Network Interface Bit Rate (UNI) Video CBR Codec V.35 frame relay Rouler FIGURE 2: ATM Access Concentrators (AACs) provide connectivity to a variety of data, video, and voice networking equipment, includ- ing routers, video codec, PBXs, and embedded-base proprietary multiplexers.