Ring-beep on internal busy calls

[Evan_Yealink]

Dear Lupacexi,

Good day!

For this feature request, do you mean the scenario is like below?
1. User A calls User B.
2. User B answers the call.
3. User C calls User A, you want to User C hear a ring-beep or prompt tone to alert that A is talking now, right?

If yes, please disable the Call Waiting feature.

To configure call waiting via phone user interface:
Menu->Features->Call Waiting

Please let me know if any misunderstanding.

Best Regards,
Evan You

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