This is an OLT that is essentical for wifi connection to your mobile phone and computer. This device can support pots connection and CATV. It is very useful for your house fiber network. ZTE ZXHN F668 GPON Optical Network Terminal with 4*GE+2*POTS+1*CATV+1*USB+WIFI can be configured by OLT or Web, or NMS Routing function supported.