Returning a call after a failed blind transfer

Hi Everyone,
I have FreePBX with Asterisk 18.3.0.
How to automatically return a call after a failed blind transfer?

Is this using the DMTF feature code, hook flash on an analogue phone, SIP phone using true blind transfer, or SIP phone using an attended transfer, but automatically connecting the transferee to the third party?

SIP phone using true blind transfer. User press ##nubmer#

No that is DTMF feature code. A SIP phone using true blind transfer would be user presses phone’s transfer button and the phone sends a SIP REFER request.

There’s no supported way to do this, but there are a few community hacks that will provide this functionality such as in this thread: Return blind tranfers when not answered

We will use an attended transfer

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