IAX trunk quality issue

Discussion in 'General' started by haywoodcox, Aug 13, 2010.

  1. haywoodcox

    Joined:
    Jun 11, 2009
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    Hi all experts,

    I have a Elastix box 1.6. User report that having intermittent quality issue for IAX trunk.

    When A site have call with B site, B site can't hear A site clearly, but A site can hear B site quite clear. Similar problem happen when A site have call with C site which C site could not hear A site clearly.

    Both B site and C site are using Asterisk 1.2.

    My trunk setting in A site is below.
    disallow=all
    allow=alaw&ilbc
    type=friend
    username=xxxxxx
    inkeys=xxxxxx
    outkey=xxxxxxx
    auth=rsa
    host=xx.xx.xx.B_Site
    context=from-internal
    qualify=yes
    sendani=yes
    trunk=yes
    qualifyfreqok=60000
    requirecalltoken=auto

    My trunk setting in B site is below:
    disallow=all
    allow=alaw
    allow=ilbc
    type=friend
    username=xxxxxxxx
    inkeys=xxxxxxx ; peer public key
    outkey=xxxxxxx ; its private key
    auth=rsa
    host=xx.xx.xx.A_site ;remote IP address
    context=default
    qualify=yes
    sendani=yes
    trunk=yes
    qualifyfreqok = 60000
    recalltoken=auto

    Is there any setting I could add to enhance the quality?
     
  2. dicko

    Joined:
    Oct 24, 2008
    Messages:
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    an ABSOLUTE requirement of IAX2 trunking is that you have a "rock solid" timer, if you don't have dahdi hardware you will need dahdi_dummy, (currently, but maybe this will change, maybe, soon . . .)

    both ends must have a dahdi_test -vv that NEVER goes below 99.9%+.

    if you don't, do all the old irq (no vm's) stuff to get there.

    regards



    dicko
     

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