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# Async Port

Address Offset

Carrier

Data Bits

Forward EIA Signals

Idle Timer

Initial State

NAU Name

Override LLC Retry Timeout

Parity

Protocol Type

Record Terminal Character

Rx Forwarding Count

Sense

Speed

Stop Bits

Tx Frame Gap

  Some of these parameters are specific to Terminal or Host operation.

Protocol Type

  This drop-down list enables you to select the protocol type for this port.

NAU Name

  This optional field enables you to assign a name to the port. NAU names must be unique to the unit.
  Range: Up to eight alphanumeric characters

Initial State

  This option defines the port's state at system startup. If disabled, an operator must manually enable the port.
  Range: Enabled or Disabled

Carrier

  This selects the type of carrier used by the port.
  Range: Switched (modem), or Constant

Sense

  This option determines whether the port emulates Data Communication Equipment (DCE) or Data Terminal Equipment (DTE).
  Range: DTE or DCE

Speed

  This value determines the speed at which the port operates. If the port is externally clocked, the speed is determined by the clocking device, providing it doesn't exceed the maximum rate.
  Range: Dependent upon the attached devices

Parity

  This parameter defines the parity used for every async character.
  Range: None, Odd, or Even

Data Bits

  This parameter defines the number of data bits used for every async character.
  Range: 5, 6, 7, or 8

Stop Bits

  This parameter defines the number of stop bits used for every async character.
  Range: 1, 1.5, or 2

Idle Timer

  This value defines the idle timer used to indicate an end-of-frame condition.
  Range: 0 -- 5000 milliseconds

Tx Frame Gap

  This parameter sets the minimum transmit idle time between frames. This enables the other end to detect the end-of-frame condition. To disable the Tx Frame Gap, set this value to zero.
  Range: 0 -- 5000 milliseconds

Rx Forwarding Count

  This value specifies the frame forwarding counter. After receiving the specified number of characters, the unit transports the frame across the network.
  Range: 1 -- 1024 characters

Override LLC Retry Timeout

  This option enables you to override the configured N2 parameter with a value of zero.
  Range: Yes or No

Forward EIA Signals

  If enabled, the async character stream is assembled into a packet and delivered to the network after a request to send/clear to send (RTS/CTS) toggle.
  Range: Enabled or Disabled

Address Offset

  This value defines the position of the device poll address in the async character stream.
  Range: 0 -- 255

Record Terminal (Forwarding) Character

  This value enables the port to recognize the designated record terminal character, if one exists.
  Range: 01 -- FF hexadecimal