A VoIP analog telephone adapter coupled to a telephone allows a telephone call to be made over the Public Switched Telephone Network (PSTN) or over the Internet. Prior to dialing a phone number, with the telephone "off-hook", a caller receives an audible indication as to whether the call will be made over the PSTN or the Internet through a standard dial tone generated by a Central Office or a distinctive dial tone generated by the adapter. The distinctive dial tone is different from the PSTN's dial tone.