In ISP networks, Optical Transceivers play a vital role because they connect the OLT with upstream devices such as Core Routers or Switches. If there is any problem in fiber or module, internet downtime can happen. That’s why checking Optical Transceiver details on the ECOM OLT uplink port is very important.
Why Check Optical Transceiver Details?
Monitoring the transceiver helps you to:
- Verify if the optical module is working properly
- Check TX/RX power levels
- Identify faulty fiber connections
- Confirm module type, speed, and wavelength
- Troubleshoot uplink port issues quickly
Step 1: Login to ECOM OLT
Connect to your ECOM OLT via Console or telnet using a tool like PuTTY:
Connecting to 172.31.100.50 Connected to 172.31.100.50 User Access Verification **************************************************************** ** EPON OLT Integrated Operating System. ** ** Device Model : E04EP-4S+ ** ** Hardware version : V1.1 ** ** Firmware version : V3.4.27_250728 ** ** BuildDate : Mon, 28 Jul 2025 16:34:26 +0800 ** ** Mac Address : E0:67:B3:7B:62:C3 ** **************************************************************** User name:admin Password: ***** KALAM-OLT> ena KALAM-OLT# config KALAM-OLT(config)#
Replace 172.31.100.50 with your OLT’s management IP.
Step 2: Show Transceiver Details
My ECOM OLT has two uplinks — one on xge 1 and the other on xge 2.
Now, we will check the Transceiver Details of these two ports.
The command to check the power of the Transceiver module on the ECOM OLT’s Gigabit port or 10G port is given below.
xge 1
KALAM-OLT> ena KALAM-OLT# config KALAM-OLT(config)# interface xge 0/0 KALAM-OLT(config-xge-0/0)# show port ddm-info 1 KALAM-OLT(config-xge-0/0)#
output Like this:
xge 0/0/1 Transceiver information: ----------------------------------------------------------------------------- Temp(C) :38.56 Voltage(V) :3.28 Bias(mA) :39.99 TX power(dBM) :3.41 RX power(dBM) : -6.21 ----------------------------------------------------------------------------- Transceiver Type : 10G Base-ER_SFP Connector Type : LC Wavelength(nm) : 1270(nm) Transfer Distance : 40km(9um) Diagnostic Monitor: YES Vendor Name : ECOM Ordering Name : S+10G-LC40D-A Version : A0 Serial Number : L40300368 Manufact Date : 20240301 -----------------------------------------------------------------------------
xge 2
KALAM-OLT> ena KALAM-OLT# config KALAM-OLT(config)# interface xge 0/0 KALAM-OLT(config-xge-0/0)# show port ddm-info 2 KALAM-OLT(config-xge-0/0)#
output Like this:
xge 0/0/2 Transceiver information: ----------------------------------------------------------------------------- Temp(C) :35.85 Voltage(V) :3.35 Bias(mA) :36.75 TX power(dBM) :1.31 RX power(dBM) : -4.43 ----------------------------------------------------------------------------- Transceiver Type : 10G Base-LR_SFP Connector Type : LC Wavelength(nm) : 1330(nm) Transfer Distance : 20km(9um) Diagnostic Monitor: YES Vendor Name : ECOM Ordering Name : S+10G-LC20D-B Version : A0 Serial Number : L50500145 Manufact Date : 20250527 -----------------------------------------------------------------------------
Step 3: Verify Optical Power
The most important values are TX Power (transmit) and RX Power (receive):
- TX Power should normally be between
-1 dBm to +4 dBm - RX Power should normally be between
-15 dBm to -28 dBmdepending on distance - If RX Power is too low, fiber loss or dirty connectors may be the reason
Best Practices
- Always clean fiber connectors before plugging in.
- Keep backup optical modules ready.
- Monitor power levels regularly to avoid downtime.
- Use the correct wavelength module (1310nm or 1550nm).
Conclusion
By following this CLI guide, you can easily check Optical Transceiver details on ECOM OLT uplink ports. This ensures better monitoring, helps in troubleshooting, and keeps your ISP network stable.
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ECOM OLT Basic Configuration Guide
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