# Introduction

The server keeps records of fax traffic, both at the system and mailbox level. Mailbox owners can be billed for faxes sent and received, either in terms of the number of faxes, or the total number of pages.

You can set NuPoint Fax billing rates for the following types of usage:

- Number of received fax messages

- Number of sent fax messages

- Retrieval of non-billed fax messages

- Retrieval of billed fax messages

- Undelivered fax messages

- Number of fax pages received

- Number of non-billed fax pages received

- Number of billed fax pages received

- Fax disk usage

These different usages can be combined in many ways to provide users with defined billing levels. This section describes each usage type. For instructions to produce billing reports, see Run a Billing Report. Fax statistics reports are also available to monitor the use of fax groups and fax storage.

NuPoint Unified Messaging servers offer two other methods of billing mailbox owners for fax usage:

- Fax transactions are recorded in Call Detail Recorder records, which can be downloaded to a computerized billing system for interpretation and billing.

OR

- The server can place fax calls using mailbox owners’ long distance carriers and calling card numbers. This can eliminate the need for any further billing, because there is no toll incurred by the server.