1. 
   dial tone
   (from the article `telephone`) ...the handset is lifted from the cradle), contact is restored, and current flows through the loop. The switching office signals restoration of ...
   Found op http://www.britannica.com/eb/a-z/d/42
   
   
2. 
   Dial tone
   A dial tone (known in the British Isles as a dialling tone) is a telephony signal used to indicate that the telephone exchange is working, has recognized an off-hook, and is ready to accept a call. The tone stops when the first numeral is dialed. If no digits are forthcoming, the permanent signal p...
   Found op http://en.wikipedia.org/wiki/Dial_tone
   
   
3. 
   dial tone
   a tone which indicates that the exchange is ready to receive the address information from the calling party
   Found op http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=714-08-04
   
   
4. 
   Dial Tone
   [G.I. Joe] Dial Tone is code name of two fictional characters from the G.I. Joe: A Real American Hero toyline, comic books and cartoon series. The first is male and debuted in 1986. He is the G.I. Joe Team`s communications expert. He is voiced by Hank Garrett in the Sunbow G.I. Joe cartoon s...
   Found op http://en.wikipedia.org/wiki/Dial_Tone_(G.I._Joe)
   
   
5. 
   dialtone
   1) 'go ahead and call' sound 2) Caller's go-ahead 3) Calling sound 4) Cell phone's lack 5) Hum on the line 6) Indication of service availability 7) It may follow a click 8) One thing land-lines have that cellphones lack 9) Open line indi...
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/dialtone/1
   
   

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