Cant we have an option of allocating the number of fax messages that can be sent using the billing Code. e.g. Say I have billing Code Production and Development.
Production = 20 relays of fax messages p/m or within certain range of days, when it reaches 20 as the limit, it stops relaying and send the relevant mgs
Development = 10 relays of fax messages p/m or within certain range of days, when it reaches 10 as the limit, it stops relaying and send the relevant msg

Note: The whole idea is to have a limit on the number of fax messages that can be sent by the billing code.

Thanks in advance!!