[OpenSIPS-Users] openSIPS and RTP media stream fault-tolerance

[Ovidiu Sas]

On Fri, Oct 31, 2008 at 10:55 AM, Lars Ramchter <lramchter at gmail.com> wrote:
> Hello,
>
> I would like to use OpenSIPs for a voip demo.
> I've seen it's possible to do NAT traversal with nathelper and RTPproxy.
> It seems possible to use multiple RTPproxy instances. The RTPproxy homepage
> says "The nathelper module included into the SIP Express Router (SER),
> OpenSIPS or Kamailio as well Sippy B2BUA allow using multiple RTPproxy
> instances running on remote machines for fault-tolerance and load-balancing
> purposes."
>
> I've been wondering what fault-tolerance means ?
> Does it mean that if a RTPproxy instance stops, no next call will go through
> it and all further calls will use an other one ?
Yes.

> Or does it mean that in case of a failure of the RTPproxy during a call (I'm
> just concern about the RTP media stream), it would be redirected on the fly
> through another RTPproxy instance with minimum loss ?
No.

> Is that solution even possible ?
AFAIK, not at this point in time.

> Or would the call be ended, and then I would have to make another call
> through another RTPproxy instance ?
Yes.

> I don't know if I should post this message on the RTPproxy mailing list too.
>
> Best regards,
> Lars Ramchter