Provision Of Services By Specialized Company(S), Concessionary Or Authorized By The National Telecommunications Agency? Anatel, To Provide Fixed Switched Telephone Service? Stfc, In Local Mode, For Correios Units Installed In Bahia, With The Supply And Installation Of E1 Links, 2 Mbps Digital Beam, With Bidirectional Links And Provision Of Ddr Extension Numbering Range (EXPIRED)