[OpenSIPS-Users] How to manage REFER Packet

Calvin Ellison calvin.ellison at voxox.com
Thu Mar 11 16:24:01 EST 2021

Is it your intention to transfer an established call, or do you really a

In the case of a redirect you're actually looking for the REDIREDCT method
not the REFER method. Instead of returning a 200 OK then REFER, you would
return a 300 REDIRECT with the new URI in the Contact header. That
completes the first dialogue and then you start a new dialogue to the
destination provided by the REDIRECT.


Calvin Ellison
Systems Architect
calvin.ellison at voxox.com
+1 (213) 285-0555

5825 Oberlin Drive, Suite 5
San Diego, CA 92121

On Sun, Mar 7, 2021, 23:12 Vinayak Makwana <vinayak.makwana at ecosmob.com>

> Hello Everyone,
>  I would like to manage REFER packet with opensips script
>  In my case i want manage REFER packet like whenever i opensips proxy
> getting REFER packet from freeswitch at that time i need to convert this
> REFER packet into INVITE packet from opensips script and send to the
> endpoint.
> Is their  any possibilities where I can manage this thing in opensips
> 3.1.x ?
> Please suggest me.
> My scenario like this:
> A                            opensips                B(Freswitch)
>   |   -----INVITE ------->    |   -------INVITE------>   |
>   |   <-----200OK -------    |  <-------200OK------    |
>   |  <-----INVITE -------   |   <-------REFER----    |
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