Support Services - Why cant I see PJSIP extensions in the Digium addon module for freepbx?

While using FreePBX 13 and the Digium addons module for FreePBX you may notice that only SIP extensions are available to add. 
Currently PJSIP is unsupported in the Digium addons module for FreePBX, PJSIP can still be configured manually via the Asterisk configuration files, before doing this you will need to remove the Digium addons module from FreePBX.

The Asterisk wiki provides further information on configuring PJSIP at the link below.

https://wiki.asterisk.org/wiki/display/AST/Configuring+res_pjsip