ZMUX-32 telephone Optical is a digital communications system infrastructure, also known as PCM, equipment. The device is mainly through a variety of interface boards, the voice, data, images and signals collection, through transmission of point to point optical fiber. 
 Various types of user interface (including voice, data, image), are assembled in small, modular components to the motherboard, all the user modules can be mixed assembly. 
 Support caller ID. 
 Can provide real-time billing for anti-polar signaling. 
 Direct use of optical fiber transmission (PDH omitted). 
 Improve the status display for easy maintenance.