One Communications is offering one month free with a 2 - 3 year term on the following products:

OneSolutions Digital Voice: digital local and long distance;
OneSolutions Dedicated Internet Access (DIA): guaranteed symmetrical bandwidt;
OneSolutions Ethernet DIA: even more bandwidth with the same Service Level Agreements;
OneSolutions Essential and Enhanced;
OneSolutions MPLS VPN:  wide area networking solution for multiple locations;
OneSolutions Complete:  converged voice, Internet, MPLS VPN and CPE.

** some restrictions apply