715 - 9-1-1 Public Emergency Reporting Service (PERS) 8740-B20-0715/99 1999/12/14 MTS Tariff Notice no.
715 - 9-1-1 Public Emergency Reporting Service (PERS) 8740-B20-0715/99 1999/12/14 MTS Avis de modification tarifaire no.