Any good billing system?

We’ve been using a2billing the last few years and its definitely not working out
Is there anything out there that is good, that is not open source, and preferably able to bill based off LRN?
We are a service provider using asterisk. No calling cards or any of that stuff


I am also using a2billing and not facing really any issues - I did change some bits of code and it really works to my needs

what’s wrong in your case ?

Changed some bits of code and I just realized it wasnt billing DIDs for half my customers