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