47 C.F.R. § 69.711
(b) Phase I triggers. To obtain Phase I pricing flexibility, as specified in § 69.727(a) of this part, for channel terminations between LEC end offices and customer premises, a price cap LEC must show that, in the relevant area as described in § 69.707 of this part, competitors unaffiliated with the price cap LEC have collocated:
(c) Phase II triggers. To obtain Phase II pricing flexibility, as specified in § 69.727(b) of this part, for channel terminations between LEC end offices and customer premises, a price cap LEC must show that, in the relevant area as described in § 69.707, competitors unaffiliated with the price cap LEC have collocated: