Translation-rule are the best IOS tool that you can use to make digit manipulation. In order to execute them , here are the required steps:

  1. Build your translation-rules
  2. Build your translation profiles
  3. Apply your translation-profiles in incoming or outgoing or both mode

Here are where you can apply yoru translation profiles:

  • All voip calls
  • a particular dial-peer
  • ephone-dn
  • interface
  • trunk-group