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Trunk provider requires Diversion Header

Discussion in '3CX Phone System - General' started by pehavel, Jun 8, 2017.

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  1. pehavel

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    Hello,

    I have a problem displaying the correct original caller's number for an outgoing call from 3CX, when call is redirected.
    I have consulted this problem with the trunk provider: They need in SIP packet header Diversion field.

    How can I set 3CX system to sent this Diversion Header for outgoing redirected call? I have not found this option anywhere.

    Thank for help.
     
  2. StefanW

    StefanW Head of Customer Support and Training
    Staff Member 3CX Support

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    there is a small issue with this header, even widely used it is "Historic"

    https://tools.ietf.org/html/rfc5806

    and has been replaced with the history header... Best to switch to a supported provider which does not need this.
     
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  3. pehavel

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    When Diversion Header is history (old), what is now use for redirected signaling in SIP?
     
  4. StefanW

    StefanW Head of Customer Support and Training
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    As stated the "history header". But in general, most providers only require that you send a number you own (as authorization) and the number you like to show (display number).
     
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