OpenTOC

SIGCOMM, as well as ACM, provide support services for conference and event organizers to help plan and run their events. 

How to link papers (OpenTOC): 

The ACM OpenTOC is a unique service that enables Special Interest Groups to open the content from recently held conferences enabling visitors to download the definitive version of the contents from the ACM Digital Library at no charge in perpetuity starting from the conference start date. Downloads of these articles are captured in official ACM statistics, improving the accuracy of usage and impact measurements.