isp software suite

Hi i'm searching an isp management software suite. we need: service provisioning mail web dns dsl ethernet billing ip-address management ... i have searched a lot at the internet and looked at much software, but all of them looks like for "small" isp's, but we need a software suite for middle to big. if you are an isp and have coded your own, really great software and want to share it, please contact me off-list. bye, Ingo Flaschberger Network Operations --- Cable One GmbH fix: +43 (0)720 101 604 mail: if@cableone.at mobil: +43 (0)699 105 86 719