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11 — Node parameters
11.1
System serial port parameters
The two serial ports can be configured for device type, baud rate and flow control.
Serial port 1 (labeled Terminal) is configured as a DCE device. Serial port 2 (labeled
Modem) is configured as a DTE device. The data format for both ports is 8 data bits,
1 stop bit, no parity and no local echo.
Device type
Configure the serial port device type to match the type of node management
equipment connected to the port. If you change the device type of the serial port that
is communicating with the node management equipment, the display is updated, but
the change does not take effect until you log out of the node.
Three types of node management equipment can be connected to a serial port:
•
a VT100-compatible terminal (VT100)
•
a printer (PRINTER)
•
a computer (VT100, CPSS, CPSS_MODEM)
The default for serial port 1 is VT100. The default for serial port 2 is
CPSS_MODEM. Typically, serial port 2 connects to a modem that connects to
a 5620 NM or a PC running the Craft Interface Node Manager.
VT100-compatible terminal
A VT100-compatible ASCII terminal can be connected to a serial port either directly
or indirectly (remotely through a Hayes-compatible auto-answer modem). The
VT100 terminal is used for node management sessions. An EIA/TIA-232 compatible
device, such as a PC, must be connected to the other serial port for certain node
management activities (such as configuration database backup and restore).
Printer
A serial printer can be locally connected to a serial port so that alarms can be printed
out; see section 25.6 in Maintenance for more information about how to enable or
disable the printer.
11-2
2902 MainStreet Technical Practices
90-2906-01
May 2002
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