VitalPBX Virtual Fax T.38?

VitalPBX Community Support General Discussion VitalPBX Virtual Fax T.38?

  • Post
    jrosetto
    Participant

    I have install the Virtual Fax module and am testing it out.  Everything works fine with it as long as it goes over g711.  I am trying to utilize T38 but every time the trunk tries to negotiate T38 with my server it sends back ‘488 (NOT ACCPETED HERE)‘ according to wireshark.  The trunk is PJSIP and I have added the additional parameters to it

    t38pt_udptl = yes

    t38_udptl_ec = redundancy

    t38_udptl_nat = yes

    rewrite_contact = no

     

    I have also verified that my carrier supports T38 and they do.

    I’m at a loss as to how to get T38 working with Virtual Fax

     

    Would appreciate the help,

    Thanks.

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    mo10
    Moderator
    none
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    Testing with sip instead of pjsip possible?

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    jrosetto
    Participant
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    @mo10

    I was actually trying to go that route but can’t get my trunk to register.  It is a static trunk with no registration and for the life of me I can’t get it to function properly.  I get ‘Rejected’ from the trunk when it is on SIP.

     

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    PitzKey
    Participant
    US
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    What do you see in the Asterisk log?

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    jrosetto
    Participant
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    @pitzkey

    So I got with the provider and got the trunk registering over SIP but the same issue persists.  I see the handshake of t.38 in wireshark the I see ‘Malformed packet’ and it reverts back to g711.

     

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