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TZ300 fw

When I install release on my TZ300, VOIP calls can work only outgoing.

Incoming calls don't works

Category: Entry Level Firewalls


  • SaravananSaravanan Moderator


    Thank you for visiting SonicWall Community.

    Was this VoIP setup worked prior to the firmware upgrade? Could you please check the SonicWall logs for any error messages? Also, I would suggest you to perform a packet capture on the SonicWall based on phone's IP address(es) or port numbers.


    Saravanan V

    Technical Support Advisor - Premier Services

    Professional Services

  • LarryLarry All-Knowing Sage ✭✭✭✭

    @ChristianP - following

  • BommelBommel Newbie ✭
    Have you tried to disable sip alg? My supplier of the sip line pointed this out.
    I had the same issue and uploaded the previous firmware version to het it working and have not tried this solution yet.
  • Halon5Halon5 Enthusiast ✭✭

    Was it an upgrade?

  • AjishlalAjishlal Community Legend ✭✭✭✭✭

    Hi @ChristianP

    Try disabling sip transformations, enable consistent NAT, and disable UDP flood protection.

  • EF999EF999 Newbie ✭

    We have the same issue after upgrading to 6-5-4-8-89n yesterday night on one of our customers NSA2650 Clusters.

    The VoIP provider confirmed that sip registration stopped working the second we installed the update.

    When we do a WAN failover, sip registration works but the customer cant hear the other side.

    Gonna open a case for this too.

  • LarryLarry All-Knowing Sage ✭✭✭✭

    @ChristianP and @EF999

    It has been a month - could you please update status on either support's conclusion or remediation for this issue?



  • ChristianPChristianP Newbie ✭

    I dongrade to, I exclude management from WAN and waiting for a fix in a newer firmware.


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