Sec.  61.134   Concurrences for through services.

   A carrier filing rates or regulations for through services between points on
   its own system and points on another carrier's system (or systems), or
   between points on another carrier's system (or systems), must list all
   concurring, connecting or other participating carriers as provided in  Sec. 61.54
   (f), (g) and (h). A concurring carrier must tender a properly executed
   instrument of concurrence to the issuing carrier. If rates and regulations
   of the other carriers engaging in the through service(s) are not specified
   in the issuing carrier's tariff, that tariff must state where the other
   carrier's rates and regulations can be found. Such reference(s) must contain
   the FCC number(s) of the referenced tariff publication(s), the exact name(s)
   of the carrier(s) issuing such tariff publication(s), and must clearly state
   how the rates and regulations in the separate publications apply.