| Please consider a donation to the Higher Intellect project. See https://preterhuman.net/donate.php or the Donate to Higher Intellect page for more info. |
Gray Associates GD-Fax
From Higher Intellect Vintage Wiki
Used to monitor, capture, and analyze communications sequences between fax machines and/or PC fax cards, the GD-Fax protocol analyzer ($4200) includes card-resident data-capture and user-interface software. From Gray Associates (Truckee, CA), the GD-Fax plugs into an AT slot and records T.30 and T.4 transaction and timing data to disk for analysis against CCITT standards.