Sec. 51.209  Toll dialing parity.

    (a) A LEC shall implement throughout each state in which it offers 
telephone exchange service intraLATA and interLATA toll dialing parity 
based on LATA boundaries. When a single LATA covers more than one state, 
the LEC shall use the implementation procedures that each state has 
approved for the LEC within that state's borders.
    (b) A LEC shall implement toll dialing parity through a 
presubscription process that permits a customer to select a carrier to 
which all designated

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calls on a customer's line will be routed automatically. LECs shall 
allow a customer to presubscribe, at a minimum, to one 
telecommunications carrier for all interLATA toll calls and to 
presubscribe to the same or to another telecommunications carrier for 
all intraLATA toll calls.
    (c) A LEC may not assign automatically a customer's intraLATA toll 
traffic to itself, to its subsidiaries or affiliates, to the customer's 
presubscribed interLATA or interstate toll carrier, or to any other 
carrier, except when, in a state that already has implemented 
intrastate, intraLATA toll dialing parity, the subscriber has selected 
the same presubscribed carrier for both intraLATA and interLATA toll 
calls.
    (d) Notwithstanding the requirements of paragraphs (a) and (b) of 
this section, states may require that toll dialing parity be based on 
state boundaries if it deems that the provision of intrastate and 
interstate toll dialing parity is procompetitive and otherwise in the 
public interest.

[ 61 FR 47349 , Sept. 6, 1996]