Netgate Discussion Forum
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Search
    • Register
    • Login

    VOIP - Moments of Silence in conversations. (Is this the Solution?)

    Scheduled Pinned Locked Moved General pfSense Questions
    3 Posts 3 Posters 467 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • cyber7C
      cyber7
      last edited by

      Good day everyone
      I hope I can get some more insight on this issue. I installed voip phones on my internal lan and am having some issues. All of my conversations keeps giving me dead-space silence where the remote voice gets cut off. Then the conversation will continue...

      After going through SIPROXD, VOIP SHAPING, GATEWAY REDIRECTION and going as far as adding a new line, I discovered by chance (https://forum.netgate.com/topic/101184/voip-issues/8) that changing the values in System/Advanced/Firewall&NAT/State Timeouts (seconds - blank for default):

      • UDP First = 3600
      • UDP Single = 3600
      • UDP Multiple = 3600

      the problem went away!
      My question: Is this the correct approach? Why did the problem go away with these setting and if this is the correct approach, why is it not documented?

      kind regards
      cyber7 (aka Aubrey Kloppers, Cape Town, South Africa)

      When you pause to think, do you start again?

      2.2.4-RELEASE (amd64)
      built on Sat Jul 25 19:57:37 CDT 2015
      FreeBSD 10.1-RELEASE-p15
      and
      pfSense 2.3.2-RELEASE-p1 (amd64 full-install) on pfSense

      1 Reply Last reply Reply Quote 0
      • kiokomanK
        kiokoman LAYER 8
        last edited by

        it is documented
        https://docs.netgate.com/pfsense/en/latest/nat/configuring-nat-for-voip-phones.html
        they say to set Firewall Optimization Options to Conservative (increase state timeout)

        ̿' ̿'\̵͇̿̿\з=(◕_◕)=ε/̵͇̿̿/'̿'̿ ̿
        Please do not use chat/PM to ask for help
        we must focus on silencing this @guest character. we must make up lies and alter the copyrights !
        Don't forget to Upvote with the 👍 button for any post you find to be helpful.

        1 Reply Last reply Reply Quote 0
        • stephenw10S
          stephenw10 Netgate Administrator
          last edited by

          Yes, for most that is not required but if the keep alive packet spacing is too high you may need to set conservative mode. Or use custom timeouts as you did.

          Steve

          1 Reply Last reply Reply Quote 0
          • First post
            Last post
          Copyright 2025 Rubicon Communications LLC (Netgate). All rights reserved.