Well, a code is a rule for converting a piece of information into another form or representation. In your case a "telephone code" could be a password or passphrase. And a cable is most often used to wire two things for example a "computer cable" could be the power cable or the ethernet cable. Hope that helps.

telephone code is part of a telephone number; it's a number. Cable is a physical cable. Totally different things. Codes abound in computers - code names, code numbers. International Country codes, Currency Codes ...老鬼