SIP Trunking with mynetfone

Discussion in '3CX Phone System - General' started by kerrchris, Nov 27, 2013.

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  1. kerrchris

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    Hi All

    firstly hello, my name is Chris from Sydney Australia..

    I am having some difficulties with Outbound call registrations using mynetfone VOIP trunks , I get the following message when trying to make calls

    "Call or Registration to PhoneNumber@(Ln. 1000@mynetfone) has failed. [ V4 125.213.160.83:5060 UDP target domain=unspecified mFlowKey=788 ] replied: 404 Not Found;from IP:125.213.160.83:5060"

    unfortunately the provider has been unable to assist with the 3cx setup as they haven't any knowledge of it, they do however require specific SIP messages/formats for registration (as below) I am not aware of how to set this from 3cx, anyone able to assist?

    regards

    Chris

    INVITE sip:0412345678@sip20.mynetfone.com.au:5060 SIP/2.0

    In the INVITE string, “0412345678” is the number that has been dialed.
    “sip20.mynetfone.com.au” is the Proxy Server for the MyNetFone SIP Trunk Service. The IP
    address can be used instead of the hostname if desired.
    The SIP Port of “5060” should be used.
    The format of <number>@<proxy server>:<sip port> must be used.

    Via: SIP/2.0/UDP 125.213.170.253:1025;branch=z9hG4bK20681057

    In the VIA string, “125.213.170.253” is the Public IP Address of the internet connection that
    the SIP Trunk service is being used on.

    From: "Joe Bloggs" <sip:0281234567@125.213.160.83>;tag=3B792E38-1F4A

    In the FROM string, “0281234567” is one of the MyNetFone DID’s that have been assigned as
    part of the SIP Trunking service.
    ”125.213.160.83” is the IP Address of the Proxy Server for the MyNetFone SIP Trunk service.

    Contact: <sip:0281234567@125.213.170.253:1025>

    In the CONTACT string, “0281234567” is one of the MyNetFone DID’s that have been assigned
    as part of the SIP Trunking service.
    ”125.213.170.253” is the Public IP Address of the internet connection that the SIP Trunk
    service is being used on.

    o=CiscoSystemsSIP-GW-UserAgent 4848 4553 IN IP4 125.213.170.253

    In the SDP section of the INVITE packet, “125.213.170.253” is the Public IP Address of the
    internet connection that the SIP Trunk service is being used on.
    c=IN IP4 125.213.170.253

    In the SDP section of the INVITE packet, “125.213.170.253” is the Public IP Address of the
    internet connection that the SIP Trunk service is being used on.
     
  2. kerrchris

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    After a bit of wiresharking I have found that the first VIA string is using the local address of my 3cx server, rather than the public address, is it possible somewhere to change this configuration?
     
  3. leejor

    leejor Well-Known Member

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    Could it be a STUN issue? Do you have that enabled in 3CX?
     
  4. lneblett

    lneblett Well-Known Member

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    did you use the template to set up the provider? if not, look here:
    http://www.3cx.com/blog/voip-howto/3rd-party-supported-voip-providers/

    they are listed.
     
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