Did you mean https://github.com/onsip/SIP.js ?
sipjs.com
SIP.js developer documentation https://sipjs.com
If you are looking for the SIP.js github page, you can find it at https://github.com/onsip/sip.js
Development
git clone https://gitlab.com/onsip/sipjs.com
cd sipjs.com
gem install bundler # http://bundler.io
bundle config set --local path 'vendor/bundle'
bundle install
bundle exec nanoc # build once
bundle exec nanoc view # serve over localhost:3000
bundle exec guard # live rebuild
Publish to Gitlab Pages:
git push origin master
Publish to Github Pages (deprecated):
bundle exec rake publish # publish to sipjs.com