provided by Star2Billing S.L.

To prevent passing around card numbers and access codes, is there a way to the following?

No CID, cannot use system.
Once CID is set, cannot change.
No concurrent usage.

Thanks

To stop concurrent usage, the "SIMULTANEOUS ACCESS" option must be set to "INDIVIDUAL ACCESS"

Yes, thanks. I saw that later on.

I was conferring with another who has been running A2B in production environment, so I asked him about offering unlimited calls for non-commercial usage.

He said people share the PIN numbers and abuse the account. So my idea to help curb abuse would be to require CID if you want to use the system, and not be able to change it.

The problem is it seems to fail for first time call because since CID requirment is enabled, and it cannot change CID (if the settings are set to prevent), thus the system fails to take the call because it has no CID on record for the one who is calling for the first time.