# Parallel forking with early media

**URL:** <https://community.asterisk.org/t/parallel-forking-with-early-media/25012>\
**Category:** Asterisk General\
**Created:** [January 16, 2009, 1:52pm UTC](https://community.asterisk.org/t/parallel-forking-with-early-media/25012 "2009-01-16T13:52:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![etisrv](https://avatars.discourse-cdn.com/v4/letter/e/278dde/32.png) [@etisrv](https://community.asterisk.org/u/etisrv)\
**Post date:** [January 16, 2009, 1:52pm UTC](https://community.asterisk.org/t/parallel-forking-with-early-media/25012/1 "2009-01-16T13:52:43Z")

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Hi,  
I’d like to implement the following scenario:

```
- I have 3 SIP endpoints, say A, B anc C
- Asterisk, say X
- B and C belong to the same group (implemented in Asterisk with queue method and ringall strategy).
- A, B and C use the same media and media attributes

```

A calls the group and both B and C have to ring in parallel. I have already achieved this with the configuration mentioned above.

Now, I’d like to have the same behavior but also to make B and C opening early media channels each (I need just a recv only channel) towards the caller A, in order to receive media from A, before picking up the call.  
My idea is that B and C should respond to the invite with 180 or 183 with SDP and X should forward one “equivalent” message (183 with SDP) to A. Then X should be able to receive media from A and forwards it to both B and C.

Is this possible with Asterisk? Could someone address me to the solution or proper configuration?

With configuration mentioned above (queue and ringall strategy), I see the 180 with SDP from B and C to X but not from X to A and early media doesn’t work. Maybe something missing in my configuration…

Thanks in advance.

etisrv