HP LaserJet 8150 Series Printers - Software Technical Reference

Software description
3
Technology backgrounders
Bidirectional communication
The HP LaserJet 8150 printing system software uses a new bidirectional communication
technology. Previous versions of printing system software used Cooperative Object Layering
Abstraction (COLA) architecture.
Bidirectional communication describes the printer's ability to respond to data inquiries from your
computer and report back information, such as what type of paper is available or what
accessories are connected to the printer. If a printer does not have this capability (no bidirectional
mode), it can only accept commands from the host and cannot report information back.
Driver Autoconfiguration and Job Status and Alerts use bidirectional communications software.
The typical installation installs Driver Autoconfiguration in supported environments that contain
the bidirectional software. Use the custom installation when you do not want these features.
Bidirectional communication depends on your network operating system and the method used to
connect your printer to the network.