Sec. 51.100  General duty.

    (a) Each telecommunications carrier has the duty:
    (1) To interconnect directly or indirectly with the facilities and 
equipment of other telecommunications carriers; and
    (2) To not install network features, functions, or capabilities that 
do not comply with the guidelines and standards as provided in the 
Commission's rules or section 255 or 256 of the Act.
    (b) A telecommunication carrier that has interconnected or gained 
access under sections 251(a)(1), 251(c)(2), or 251(c)(3) of the Act, may 
offer information services through the same arrangement, so long as it 
is offering telecommunications services through the same arrangement as 
well.

          Subpart C--Obligations of All Local Exchange Carriers