Hi Vaun,
Did you end up finding a solution for this? I was just looking for references to customer SIP Headers in the forum and saw your post.
There is already a *67 prefix dialing method -
https://help.mypurecloud.com/articles/external-trunk-settings/ go to the section Identity \ Outbound.
Alternatively you can try to come to an agreement with your carrier that if you send them From: <sip:
anonymous@domain.com> they use a header transformation rule in their SBC/SIP Server to add in the P-Asserted-Identity: header and Privacy:ID header for you. You can then use the outbound Calling Address transformation rules in Identity to set a subset DID range to be converted to sip:
anonymous@domain.com to automatically set anonymous for some users/queues with specific DIDs.
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Nathan Kaden
CALLSCAN AUSTRALIA PTY. LTD.
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