atx networks digital insertion system

I have access to multiple mdu solutions digital video insertion systems made by atx networks. May try and sell them and dont no to much on price and uses. Here is info on them. Any input would be great

Mini Digital Video Insertion System (DVISm)

The DVISm Mini Digital Video/Audio Insertion unit is an MPEG-2/H.264 SD/HD encoder and multiplexer with QAM and/or IP output and is a cost and space-efficient encoding solution ideal for spectrum reclamation and/or MDUs provisioned with digital set-top boxes or digital TVs. It provides a means to cost-effectively insert locally generated MDU content (eg. security camera or localized advertising, etc.) in digital format (QAM/IP) signal streams into the MDU network. This is a scalable wall mount solution for encoding up to 6 SD (or 3 HD) A/V programs and multiplexing them onto a QAM channel via its integrated agile QAM modulator/upconverter, as well as outputting encoded channels optionally in IP format. An optional integrated QAM channel deletion filter allows for efficient and compact deletion/reinsertion functionality. Local/remote configuration access (via HTTP-based GUI), as well as front access to all of the unit’s features, allows for easy and comfortable product installation. The MDU hardened wall mount enclosure with lockable front door provides a rugged platform for harsh MDU environments.