185.61.68.105 caller -> 185.61.68.110 asterisk 13.14.1 -> 185.61.68.84 callee

U 185.61.68.105:5060 -> 185.61.68.110:5060
INVITE sip:+31402xxxxxx@185.61.68.110:5060;transport=udp SIP/2.0.
From: anonymous <sip:anonymous@anonymous.invalid:5060>;tag=8MSvMvHyU0Ki74CL.dDIZ.GwV7G3U4pW.
To: <sip:+31402xxxxxx@sip.itco.nl>.
Contact: <sip:sipxtest@127.0.0.1:5060;transport=TCP;ob;alias=81.173.66.13~59840~2>.
Privacy: id.
P-Asserted-Identity: <sip:+31403yyyyyy@sip.itco.nl>.

U 185.61.68.110:5060 -> 185.61.68.84:5060
INVITE sip:+31402xxxxxx@185.61.68.84;user=phone SIP/2.0.
From: "Anonymous" <sip:anonymous@anonymous.invalid;user=phone>;tag=451e9f1e-dc98-4e62-a766-255c72c40f6a.
To: <sip:+31402xxxxxx@185.61.68.84;user=phone>.
Contact: <sip:unknown@185.61.68.110:5060>.
Privacy: id.
P-Asserted-Identity: <sip:+31403yyyyyy@185.61.68.110;user=phone>.