Installing SIP SIMPLE Client SDK on Debian 8

Few words, that missed from official wiki at AG Projects site about installing from repos.

You need also to add jessie-backports repos to your sources.list

deb http://ftp.debian.org/debian jessie-backports main

Than -
apt-get update
apt-get -t jessie-backports install python-otr
apt-get install python-sipsimple
apt-get install sipclients

That's it :) All thanks goes to Saúl Ibarra Corretgé from AG Project.