SIP Headers

    If you are using a SIP endpoint and you have configured your SIP phone to send some custom SIP headers starting with X-PH-, Plivo will send these SIP headers with the HTTP Request.

    Outbound Calls

    You can set custom SIP headers while :

    Inbound Calls

    You need a SIP phone allowing custom SIP headers. In this case, SIP headers starting with X-PH- will sent as HTTP Request.