to service operators;
(b) lease out part of a local loop and equipment
facilities;
(c) rent a leased line;
(d) lease out an antenna site and part of a
cable duct;
(e) publish delivery terms and tariff information;
(f) lease out part of a terrestrial mass communi
cations or broadcasting network;
(g) organize national and international roaming;
(h) use cost-oriented pricing based on cost
calculations;
(i) provide pre-selection for international calls
in a mobile network;
(j) use appropriate methodology of cost-
accounting;
(k) keep separate accounts on its activities;
(l) interconnect an information and commu
nications network to another information
and communications network; and
(m) provide universal service.
(3) Specific conditions relating to the allocation of
numbers that may be attached to licences where
justified and with due respect for the principle of
proportionality include
(a) designation of the service for which the
number is used, including any requirements
in regard to the provision of that service;
(b) effective and efficient use of numbers;
(c) requirements in regard to number
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