Could you please explain your requirement with some more details?
What I understood from your question is you want some features that enable the users to add a unique call tag or separation mark to individual numbers to distinguish calls.
Is this what you want?
Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.
Download RingCentral Phone for Desktop:
Tip: switch to the "sandbox mode" before logging in the app:
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