[Asterisk-Users] Sipura-3000 IP->PSTN scenrio

[Arsen Chaloyan]

Hello,
I'm configured Sipura-3000  to forward IP calls to
PSTN number on no answer (In User1 tab Cfwd No Ans
Dest: 123456 at gw0)

IPPhone  ---IP--->  Sipura-3000  ---PSTN--->  PSTN
User

Generally it works fine, but Sipura sends back SIP OK
to IPPhone just prior to dialing to PSTN number.
How to configure Sipura to detect that the remote side
on PSTN picks up the phone and only then to send SIP
OK back to IPPhone?

Can you recommend any other device that has such
detection?
How it works?

Thanks, Arsen.
P.S. Sipura-3000 Software Version:3.1.5(GWb)

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com