pjsip realtime

https://wiki.asterisk.org/wiki/display/AST/Setting+up+PJSIP+Realtime#SettingupPJSIPRealtime-InstallingDependencies


https://wiki.asterisk.org/wiki/display/AST/Setting+up+PJSIP+Realtime

https://wiki.asterisk.org/wiki/display/AST/Sorcery

sudo apt-get install python-setuptools

For Python 3.x

sudo apt-get install python3-setuptools