- Upgrade to 188.8.131.52
* switch to 1.6.2.X release series because 1.6.0.X is approaching
its End of Life date.
* make sure your asterisk configurations between 1.6.0.X and 1.6.2.X
before upgrading it.
PR: ports/144065 , ports/146964 
Submitted by: Tom Judge <tjudge_AT_mintel_DOT_com> ,
Eugene M. Zheganin <emz_AT_norma_DOT_perm_DOT_ru> 
Approved by: Florian Smeets (maintainer)