Product&Technical Support

Product&Technical Support

  • Q: I can’t configure VLAN for PON ports of GPON OLT.


    PON ports are transparent mode, don’t need to configure vlan. Other vendors such as Huawei, ZTE, Fiberhome OLT also don’t need to configure vlan for pon ports. Just need to configure tcont, gemport, service, service-port for each onu.

  • Q: How can I remote access ONU?


    You can access ONU through WAN IP. By default, it’s not allowed to access from WAN, you need to set firewall level to low and enable wan access on the web.

    Attention: for security, please do not enable wan access.

  • Q: How can I remote access OLT from Internet?


    (1)Access through AUX port:
    Change the aux IP to the same segment as your network, and configure the gateway.
    (2)Access through uplink port:
    Configure VLAN, VLAN port, and IP of the VLAN, then configure default route x.x.x.x(gateway).

  • Q: When ONU is connected to OLT, LOS light still blink.


    ONU doesn’t detect optical signal, please measure optical power by powermeter, make sure ONU rx power in range -8dBm~-27dBm.

  • Q: Why I can’t upgrade my OLT/ONU?


    Please make sure the firmware matches the hardware. Model id or hardware version doesn’t match with the firmware, upgrade will fail.

  • Q: I can’t open OLT web.


    (1)please use https to access OLT web, such as
    (2)Please use console cable to login, then check login-access rule by command “show login-access”, delete the deny rule or disable login-access function.
    (3)Please check web access port by command “show web port”, if it’s not default port 443, please add port at the end of ip address.
    (4)Please check olt version by command “show version”, if it’s old, please upgrade to latest version first.

  • Q: OLT 10G uplink port can’t work.


    By default, uplink port is 1GE mode, please input the following commands to enable 10G mode.

    Login: admin


    epon-olt> ena


    epon-olt# conf t

    epon-olt(config)# debug mode

    epon-olt(debug-mode)# set giu mode sfp+




  • Q: Where can I find the latest firmware of VSOL products.


    On the official site, there are download links of all OLT models, please find the correct model of yours and download. For other products, we don’t open download link, please provide your products’ firmware and hardware information and ask technician for new firmware.

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