15.1 The Licensee shall, in relation to all commonly provided Customer Interfaces and Network Interconnection Interfaces relating to any service described in sub-paragraph (i) or (ii) of the definition of Network Service, in use by the Licensee at the time this Condition comes into force, notify such Interfaces to the Director and publish Interface Specifications relating to such Interfaces within 90 days of this Condition coming into force, in accordance with paragraph 15.6 below.