13 Nov
2013
13 Nov
'13
8:32 p.m.
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?