[asterisk-users] What do you use for Invoicing?

[bruce bruce]

Hi Everyone,

Sorry, if it's not directly related to Asterisk. Some of people on this list
might have PBX deployed for their clients. What software do you use to
invoice them so the invoice looks like a proper telecom invoice maybe?

Prefer:
-opensource with Windows binary available.
-able to create .pdf invoices rather than printable ones.

Thanks
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