Yes, I need SIP-REFER (pass back media and signaling to PSTN). I am pretty sure it is doable because voxeo offers this
option for their Voice XML customers but I am not interested in a hosted solution at the time - it is quite expensive. As far as I understood, Voip provider MUST have pstn call transfer feature enabled by telecom provider (AT&T for example) and this should work fine with SIP.
-Vladimir Rodionov
Hi there,
Are you wanting to keep the SIP signaling in FreeSWITCH (SIP re
INVITE) and only pass back the media to the network, or pass back
signaling also (SIP REFER)?
I know several suppliers who support SIP re INVITE but none that
support SIP REFER.
Check out http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_deflect
and http://wiki.freeswitch.org/wiki/Bypass_Media
> _______________________________________________
On Sat, Aug 8, 2009 at 9:26 AM, Vladimir Rodionov<vladrodionov@gmail.com> wrote:
> Good morning,
> This is the scenario: User 1 (PSTN) calls freeSWITCH (DID). Calls goes
> through PSTN Gateway (1) to freeSWITCH application server (AS) (2).
> AS does some logic and transfers call (or forward) out of Voip provider
> network to another PSTN number User2.
>
>
> This is call bridge
>
>
> UA1 (PSTN) - -> UA2 (PSTN)
> - -
> - (1) - (4)
> -> PSTN Gateway->
> - -
> (2) - - (3)
> -> FreeSWITCH ->
>
>
> This is what I want to acomplish
> (4)
> UA1 (PSTN) ------------------------------- -> UA2 (PSTN)
> -
> - (1)
> -> PSTN Gateway->
> - -
> (2) - - (3)
> -> FreeSWITCH ->
>
>
> 1. Can it be implemented in FreeSWITCH?
> 2. Does anybody know Voip providers which support out of network call
> transfer/forwarding to PSTN?
>
> TIA
>
> -Vladimir Rodionov
>
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