Generic SIP Trunk template issue

[Tony_Lin]

we find that some templates didn't show display part when have incoming calls. For exmaple: Generic SIP Trunk or Generic VoIP provider

inbound parameters of display name on template like:

      <field name="ParameterIn" custom="" parameter="FromUserPart">$CallerName</field>
      <field name="ParameterIn" custom="" parameter="FromUserPart">$CallerNum</field>

we assume the inbound parameters of display name should be:

      <field name="ParameterIn" custom="" parameter="FromDisplayName">$CallerName</field>
      <field name="ParameterIn" custom="" parameter="FromUserPart">$CallerNum</field>