How to Enable Callback on Unsuccessful Blind Transfer

3CX Phone System includes an automatic callback feature in Blind Transfer. If you perform a blind transfer and the recipient of the call is busy, then the call will automatically return back to you. This way you can inform the caller that the person they are trying to contact is busy and proceed to transfer to another destination.

Enabling the Callback Feature

To enable the callback feature, from the 3CX Management Console, go to “Settings” > “General” > “Transfer Back on Busy” section:

CallBack feature in blind transfer

  1. Configure a unique DialCode to enable this feature. This DialCode must not conflict with other DialCodes that you have configured for your PBX. For example *3*.
  2. Configure the timeout in seconds that the caller will wait for the destination to answer before the call bounces back. For example 10 seconds.
  3. Click “OK” to apply.

Using the Callback Feature

When you perform a blind transfer to an extension that is busy, even if that extension does become free (hang up) before the configured timeout, the call will return to the extension that initiated the blind transfer.

When an extension is configured to accept more than one call at the same time (under “Edit Extension” > “Forwarding Rules” > “Accept multiple calls” tabs), the call will not bounce back, but will instead be handled according to that extensions forwarding rules (by default, if the call is not answered within 20 seconds then the call is sent to voicemail).

If the recipient rejects the transferred call it will be directed to his/her voicemail.

Last Updated

This document was last updated on 4 July 2023

https://www.3cx.com/docs/blind-transfer-callback/