• A calls B (Dialplan A to B is executed with A as external number and B as local phone)
  
• B is initiating an attended transfer to C (local phone), Dialplan B to C is executed
• B is then executing the attended transfer to C, B sends a REFER to Freeswitch with C in the Refer header)
  
• Freeswitch detects attended transfer, does not trigger a dialplan and redirects the call directly to user/C
• Problem: C still sees B as caller_id in his phone display instead of A, dependent on the phone Type (Snom or Yealink)
  

So I am wondering, if I could get the REFER to trigger a dialplan, so I can control the displyed numbers?

I searched a bit and found the variables "force_transfer_dialplan" an "force_transfer_context". Looking into the code in switch_ivr.c, I can see that the variables are preset with "XML", resp. "default".

Question: Can I use these variables to hit the dialplan on REFER. And if yes, how can I do this?

-- 
With kind regards
Peter Steinbach