[Freeswitch-users] How to call multi gateways for failover with early media?

Brian West brian at freeswitch.org
Sun Apr 5 20:29:34 PDT 2009

Yes there was till the SIP RFC writers happen to make their ears  
rather sore!  (RCI)

180 vs 183 should have been it... but NO they had to be ambiguous  
about that too... if you get a 180 without an SDP you generate... 180  
or 183 with SDP (they had a sense of humor about this one I think!)

Then this one tops the cake... on early media with forked dial...

Say you call billy, mary and ken at the same time.  Billy's address  
provides early media (ringing) you are to give the first one to  
respond with media to the caller... but if by chance Mary's phone  
provider is having a problem and they give congestion 20 seconds later  
and actually answer the call to do this cuz you know how stupid  
telco's are... now you are to give the caller the congestion tone...  
So you had prefect ringing.. then congestion... I think we have all be  
there, heard that!


On Apr 5, 2009, at 10:12 PM, David Knell wrote:

> signalling alone and, in many cases, there is simply no mechanism
> available to provide such differentiation.

More information about the FreeSWITCH-users mailing list