Introduction

You can define if the Remote Party ID or P-Asserted ID header is used.

Remote-Party-ID: "DE900 Office" <sip:"fromuser"@192.168.178.164>;party=calling;privacy=off;screen=yes
[Expert Info (Note/Undecoded): Unrecognised SIP header (Remote-Party-ID)]
[Unrecognised SIP header (Remote-Party-ID)]
[Severity level: Note]
[Group: Undecoded]

P-Asserted-Identity: "DE900 Office" <sip:"fromuser"@192.168.178.164>
SIP Display info: "DE900 Office"
SIP PAI Address: sip:"fromuser"@192.168.178.164
SIP PAI User Part: "fromuser"
SIP PAI Host Part: 192.168.178.164