Long distance phone services products which use Internet as a part of the carrier path should submit to Computers/Internet/Telephony.
VOIP services should be submitted to Business/Telecommunications/Services/VoIP
Speech dictation equipment which is "digital" but is primarily used to digitally record and playback voice for stenographic or transcription purposes is better placed in Shopping/Office_Products/Equipment or Business/Business_Services/Office_Services/General_Transcription_and_Word_Processing/.