Links on Cisco Routers T.37 Gateway Configuration

Cisco Fax Services over IP - High Level Description
Cisco Fax Services over IP Application Guide - Detailed Description
Configuring Your Cisco IOS Gateway for T.37 On-Ramp and Off-Ramp Fax Support
Outbound Gateway Configuration or in PDF format
and Inbound Gateway Configuration (If you are planning to use T37FSP, you can skip Cisco Unity references in those links)


See Sample Cisco Configuration Script for onramp/offramp T.37 faxing.

T37FSP has been enhanced to support real-time outbound faxing with Cisco T.37 capable integrated services routers.


General Links on Fax Over IP

Fax over IP on www.voip-info.org
Fax is not dying, but it will admit change, by Brough Turner, CTI magazine
ENUM - Electronic Telephone Numbers Mapping - using DNS for ENUM look up, it will be possible to forward fax directly to the email alias if alias is configured for that fax number.