5.8. Serial Port Configuration
The Serial Port Configuration menus allow you to select parameters for the RSM-8R4's
eight Serial Ports as well as the Internal Modem Port.
The Serial Ports can be configured for connection to a local PC or Modem. In addition,
the Serial Port Configuration menu can also be used to set communications parameters,
disable Administrator level commands and also select a number of other Serial Port
Parameters described in Section 5.8.2.
When responding to prompts, invoking commands, and selecting items from port
configuration menus, note the following:
• Configuration menus are only available to Administrator level accounts.
• If you are configuring the RSM-8R4 via modem, modem parameters will not be
changed until after you exit command mode and disconnect from the unit.
• Port 9 is the Internal Modem Port.
5.8.1. RS232 Port Modes
The RSM-8R4 offers four different serial port operation modes:
• Any-to-Any Mode: Allows communication between connected ports and permits
access to command mode. Any-to-Any Mode Ports can be connected to other
Any-to-Any, Passive, Buffer or Modem Mode Ports by invoking the /C command.
The Any-to-Any Mode is available to all ports (except the Internal Modem Port) and
is the default Port Mode for Ports 1 and 2.
• Passive Mode: Allows communication between connected ports, but does not
allow access to command mode. Passive Mode Ports can be connected by
accessing command mode from a free Any-to-Any or Modem Mode port and
invoking the /C command. Passive Mode is not available at Port 1, the Network
Port or the Internal Modem Port, and is the default mode at Ports 3 through 8.
• Buffer Mode: Allows storage of data received from connected devices. Collected
data can be retrieved by accessing command mode from a free Any-to-Any or
Modem Mode Port, and issuing the Read Buffer (/R) Command. Furthermore,
Buffer Mode ports can also be configured to support the Syslog and SNMP Trap
features, discussed in Sections 11 and 12. The Buffer Mode is not available at
Port 1, the Network Port or the Internal Modem Port.
• Modem Mode: Allows communication between connected ports, permits access
to command mode and simplifies connection to an external modem. Modem Mode
ports can perform all functions normally available in Any-to-Any Mode, but Modem
Mode also allows definition of a Hang-Up String, Reset String, and Initialization
String. The Modem Mode is not available at the Network Port and is the default
mode for the Internal Modem Port (Port 9.)
For more information on Port Modes, please refer to Section 9.3.