  In this paper we present results from numerical calculations for three
identical boson systems for both very large and infinite two-body s-wave
scattering length $a$. We have considered scattering lengths up to $2\times
10^5$ a.u. and solved the hyperangular part of the Schr\"odinger equation for
distances up to $10^6$ a.u.. Form these, we obtained the three-body effective
potentials, hyperspherical channel functions and the asymptotic behavior of the
nonadiabatic couplings in order to to characterize the main aspects of the
Efimov states. These results allow us to test and quantify the assumptions
related to the Efimov effect.
