asterisk users - Jul 2005 - T1 signalling on Bahamas

Hello everybody,

I need install an Asterisk Server with a TE410P digium connected to a 4x 
T1 lines on Bahamas and I don't know what kind of T1 signalling exists 
there.
I have tried some configurations on zaptel.conf ( esf, d4, b8zs, etc...) 
but can't call to any phone number using the T1 lines.

Anybody can help me?

Thanks in advanced

Elio Rojano