[enum-wg] insert meaningless and irrelevant Subject header

On 13.11.2013 22:47, Richard Shockey wrote:
> BTW the focus in the US now is on using closed ENUM systems it for all IP
> [SIP/IMS] interconnection data among carriers since everyone including the
> mobile operators want to junk their TDM/SS7 gear and Public Key
> Infrastructure for signing the inbound E.164 number in the INVITE to
> validate the origin call and combat Call Spoofing etc. 

We are lagging behind, for like 5-7 years. MNP only apply to mobile
operators, local operators will still using TDM/SS7 and nowhere plan to
junk their stuff. That's probably because our FSB didn't come up with
new wiretapping technology for SIP/IMS yet. So they still need TDM to
wiretap calls.

SIP/IMS and public key, can you point me to draft/rfc?