USRobotics V.34 Courier High Speed Modems Hewlett Packard Installations, Host mode, AT&I3 Enter

COURIER HIGH SPEED MODEMS

HEWLETT PACKARD INSTALLATIONS

During error control connections, the Courier recognizes the ASCII ENQ/ACK characters exchanged between many Hewlett Packard host computers and their terminals. The HP host sends the terminal an ENQ character at predefined intervals, and sends no more data until the terminal responds with an ACK character.

Courier modems manage this ENQ/ACK protocol so that communication is speeded up, thereby enabling HP terminals to achieve high speeds on dial-up lines. Special flow control settings, using the &I command, are required for HP users. These settings apply to ARQ connections only and to Courier modems set to either B0 or B1. Disregard other Courier flow control commands.

Set the Courier to Host mode if it is attached to the host computer, or to Terminal mode if it is attached to a terminal, as follows:

Host mode	AT&I3 <Enter>
Terminal mode	AT&I4 <Enter>

G-8 Additional Operations