SIP headers

    If you’re using a SIP endpoint and you’ve configured your SIP phone to send custom SIP headers starting with X-PH-, Plivo will send these SIP headers with the HTTP request.

    Outbound calls

    For outbound calls, you can set custom SIP headers while :

    Inbound calls

    For inbound calls, you need a SIP phone that allows custom SIP headers. If you have one, SIP headers that start with X-PH- will sent as HTTP requests.