Hi there, Community!
This post describes the procedure of how to check the ONT optical information. Please have a look below for more information concerning the topic.
BACKGROUND
When doing the troubleshooting of ONTs, sometimes we need to check the optical information of the ONT. I will show you now how to check that.
PROCEDURE
1. Check it from the ONT webpage.
Optical information
In the navigation tree on the left, choose Status > Optical Information. In the pane on the right, you can view the optical status, transmit optical power and receive the optical power of the optical module, as shown in Table 1.
Table 1. Optical information 
2. Check it via the OLT CLI command.
To query the information about the GPON class C+ optical module on the ONT 0 that is connected to the GPON port 0/3/0, do as follows:
huawei(config-if-gpon-0/3)#display ont optical-info
{ portid<U><0,3> }:0
{ all<K>|ontid<U><0,63> }:0
Command:
display ont optical-info 0 0
-----------------------------------------------------------------------------
ONU NNI port ID : 0
Module type : GPON
Module sub-type : CLASS C+
Used type : ONU
Encapsulation Type : BOSA ON BOARD
Optical power precision(dBm) : 12.9
Vendor name : NEOPHOTONICS
Vendor rev : 1
Vendor PN : PTB38J0-6538E-SC
Vendor SN : A0912739986
Date Code : 12-09-27
Rx optical power(dBm) : -17.14
Rx power current warning threshold(dBm): [-5.00,6.00]
Rx power current alarm threshold(dBm) : [-10.00,8.00]
Tx optical power(dBm) : 2.49
Tx power current warning threshold(dBm): [-5.00,6.00]
Tx power current alarm threshold(dBm) : [-10.00,8.00]
Laser bias current(mA) : 10
Tx bias current warning threshold(mA) : [30.00,90.00]
Tx bias current alarm threshold(mA) : [10.00,100.00]
Temperature(C) : 50
Temperature warning threshold(C) : [-10.00,60.00]
Temperature alarm threshold(C) : [-20.00,70.00]
Voltage(V) : 3.246
Supply voltage warning threshold(V) : [2.00,5.00]
Supply voltage alarm threshold(V) : [1.00,6.00]
OLT Rx ONT optical power(dBm) : -29.21
CATV Rx optical power(dBm) : -100.00
CATV Rx power alarm threshold(dBm) : [-127.0,-1.0]
-----------------------------------------------------------------------------
This is how to check the ONT optical information.
I hope it will be helpful for you. Thank you!
