Consider the telephony side first
There are bunches of fax server products out there, most of which work the same formula. Software for managing faxes in and out and a fax board for communicating with other fax machines/servers. However, call centers have tended to be early adopters of Voice-over-IP (VoIP) for many obvious reasons. If yours has, then you will want to look into a Fax-over-IP(FoIP)solution. They are much less expensive than fax modem-based solutions such as RightFax becuase they leverage the VoIP infrastructure from the PRI's to the desktops. Plus, the fax software should integrate with the call center system you are using so you can automate faxing out (work orders, order confirmations, etc.). The best fit for this type of environment is XMediusFAX from Sagem-Interstar (www.faxserver.com). They are the dominant market leader in FoIP having been the only real player in the market place for over 5 years.
