Internal Modem Configuration - HP 3000 9x9KS Service Manual

Internal Modem Configuration

The internal modem is configured with the on-line diagnostic utility modutil. Modutil can only be run from
the Diagnostic Users Interface (DUI). Modutil provides three functions:
1. Modem Terminal Interface
2. Modem Diagnostics
3. Modem Configuration Information
Note that the internal modem is not present in HP VISUALIZE workstation models.
T
Modem erminal Interface provides the terminal interface between the modem and the user. It takes AT
commands from the keyboard and sends them to the modem. Refer to Table 2-4 for the list and description
of the HP AT commands. It also receives data from the modem and displays it on the terminal.
The Modem Diagnostics provide the following diagnostics:
• Port Configuration Diags - Communicate with the modem by auto-selected combinations of port
configurations (baud rates, character bits, etc.)
• Modem Selftest I - Performs the modem automatic selftest.
• Modem Selftest II - Performs the modem local analog loopback test.
• Modem Selftest III - Performs the modem local digital loopback test.
• Modem Selftest IV - Performs the modem remote digital loopback test.
• Combined Modem Selftest - Performs modem selftests I, II and III.
The Modem Configuration Information mode gives displays of the operating parameters, configuration
parameters, and S register values.
To configure the internal modem perform the following steps:
ONLINE diagnostics need to be loaded prior to performing the following steps and configuring the
internal modem.
1. At the system prompt enter the sysdiag command. The DUI prompt should appear.
2. At the DUI prompt enter modutil command.
3. At the modutil prompt (MU>) enter terminal to go into the terminal command mode. The following
terminal start message should be displayed:
The modem is on port 7 of the Core I/O board
Baud rate is 19200 bps, character size is 8 bits
Do you want to make any changes? Yes/No __
Baud rate (19200 bps) refers to the serial baud rate, not the modem bps on-line rate. If Y (yes) is entered
you can change the baud rate and character size. The program then repeats the terminal mode start message
with the new setup parameters.
If N (no) is entered, to accept the displayed parameters, the program displays the following message:
You can now enter modem commands or use Ctrl+X to return to the MU prompt
2-14 Install and Configuration
Note