Sec. 61.67  New or discontinued telephone and teletypewriter service 
          points; mileages.

    Message toll telephone service points and teletypewriter exchange 
service points added or discontinued during a calendar month may be 
filed not later than 20 days after the end of such month where the basic 
schedules of rates and regulations applicable to such message toll 
telephone and teletypewriter exchange service points are effective and 
the effective date of each addition of discontinuance is shown.