47 CFR § 64.6303
Caller ID authentication in non-IP networks
February 16, 2021
Except as provided in §§64.6304 and 64.6306, not later than June 30, 2021, a voice service provider shall:
(a) Upgrade its entire network to allow for the initiation, maintenance, and termination of SIP calls and fully implement the STIR/SHAKEN framework as required in §64.6301 throughout its network.
(b) [Reserved]
[85 FR 73395, Nov. 17, 2020]
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