Why Zyxel router switches from vdsl to adsl?

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Amira
Amira Posts: 2
First Comment
edited February 2024 in Home Router

Zyxel router vmg3625-t50b. When the power is off for any reason and is back again, the router switches from vdsl to adsl and from higher speed to lower one. What is the cause of this and how to fix it on vdsl and higher speed? Thanks in advance.

All Replies

  • Liba
    Liba Posts: 211 image  Master Member
    First Comment First Answer Third Anniversary

    It is recommended that you contact your ISP for assistance.

  • dotcustomer
    dotcustomer Posts: 1
    First Comment

    The router may be automatically negotiating the connection type and speed based on the line conditions after a power outage. In such cases, it's possible that the line conditions are not stable enough to support VDSL or higher speed, leading to the fallback to ADSL and lower speed.

    https://community.zyxel. com/en/discussion/21150/wireless-tunnel rush-printer-does-not-connect-to-wifi#latest

  • Peter2
    Peter2 Posts: 176 image  Master Member
    5 Answers First Comment Friend Collector First Anniversary

    You can try this : Deactivate all "DSL modulation" modem parameters exept VDSL2 in Networksetting/broadband/Advanced to enforce VDSL2 .

    I turned my Router in a "VDSL2 only" one to accelerate negocation but here is no automatic fallback to DSL but to a vectoring base profile in case of line problems ….

  • Amira
    Amira Posts: 2
    First Comment

    Thanks a lot for all your replies, so grateful to you🙏.

  • OraSantose
    OraSantose Posts: 1
    First Comment

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