BX06BK is a PCM and digital cross connect technology based integrated service intelligent access platform. Its multi-service access solutions that deliver a mixed TDM, Ethernet, narrow band data and voice service with rich signaling at cost effective traditional PCM. BX06BK is 19 inch wide, 9U high, 16 slots, and intelligent bus design with powerful functions, easy commissioning and maintenance. BX-06BK supports cross-connect unit, main control unit (MCU) and power supply unit (PWR) 1+1 hot swap to improve the equipment reliability, and provide 1: 1 or 1: 3 protection to E1 channel. The external timing function (external synchronization clock provide 2Mbit/s and 2MHz input/output) makes it to synchronize with whole network well. The centralized monitor NMS system can implement real-time supervision for the whole network. The device is easy to maintain by its interface-in-front structure.As an integrated service intelligent access platform, BX06BK provides many kinds of data interfaces, including V. 35\10BaseT\RS232/485/422 and the co-directional 64K etc, supports voice interfaces such as analog customer side interface, analog office trunk interface, magnet interface, EM interface and carrier relay interface. BX06BK supplies abundant signaling, the flexible signaling setting function also makes it compatible with other brand PCM through 2M. It provides comprehensive access scheme and is widely used in PSTN public network and private network such as power, railway, aviation and army.