asterisk users - Jul 2004 - SIP Providers Setup.- Go2call, deltathree, etc...setup files ? any

Hi guys, 
 i have been playing around with it for a while but havenot figure out how to
configure SIP Providers like go2call.
They provided me a test account but i have been unable to set it up.
I have a test account with no password and an ip address, i am not connecting
behind a firewall.
I have some x100p and TDM boards from digium as well as phonejacks,
linejacks,etc. I am not sure if this will work since go2call requires g729 and i
am not sure asterisk will do the conversions (although the codec is present in
the phonejack).

thanks for your help.

Best Regards,

Francisco Perez-Landaeta

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