HP Digital NetRider Manual do Utilizador Página 168

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Configuring the FLOW CONTROL Characteristic
9-10 Configuring Basic Device Characteristics
Configuring the FLOW CONTROL Characteristic
Introduction
The FLOW CONTROL characteristic allows the access server to start and stop data
transfer between the port and the attached device. Flow control prevents data losses
due to lack of buffering space.
The FLOW CONTROL characteristic does not apply to data transfer between the
access server and a network resource. For a particular session, however, the network
resource might manage FLOW CONTROL between the port and the host.
Flow Control Types
The types of FLOW CONTROL that you can configure are:
XON/XOFF
DSR
CTS
No Flow Control
Flow Control Direction
XON/XOFF
When the access server use XON/XOFF FLOW CONTROL on a port, it sends
An XON character to start the data transfer between the port and the attached
device
An XOFF character to stop the data transfer between the port and the attached
device
XON/XOFF is the type of FLOW CONTROL that Digital Equipment Corporation’s
terminals, personal computers, printers, and modems use.
When to Use
You must use XON/XOFF FLOW CONTROL when you use:
DSR logout (See Specifying DSRLOGOUT in this chapter.)
Signal check (See Specifying SIGNAL CHECK in Chapter 10.)
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