When the corresponding indicators on the front panel are On, you can enjoy various services provided by the service provider. The device is not powered on or the Ethernet connection does not exit. The ONT received optical power is Flashing red lower than the optical sensitivity of the receiver. The optical transmitter of the PON Solid red interface is powered off. : Package Content You may also contact your equipment provider for more information on the environmental performances of these products. ZTE bears no liability to the consequences incurred by violation of the safety instructions.