Over the past several years, open source projects like Asterisk and openSIPS have helped to change the face of telecommunications. Now, someone has finally tackled the fickle word of telecom billing with the project OpenCDRRate (http://opencdrrate.org). We are big fans of the project and the people behind it.
We have integrated Slinger™ with OpenCDRRate and have added it to the list of global CDR templates. We have also extended an offer to all OpenCDRRate users to store up to 1 million records on Slinger™ for free.