Lucent Technologies PortMaster - Manual (Page 166)

Configuring Ports for Modem Use
10-8 PortMaster Configuration Guide
Setting Modem Control
Set modem control on if you want to use the DCD signal for modem connections. When
modem control is on, the PortMaster uses the condition of the carrier detect line to
determine whether the line is in use. Modem control must be on for PortMaster
outbound traffic. If modem control is off, the PortMaster assumes the carrier detect line
is always asserted. As a result, the PortMaster cannot attach to the modem for outbound
traffic because it regards the line as busy.
To set modem control, use the following command:
Command> set S0 cd on|off
Setting Parity
The parity setting must be configured to match the parity setting on the attached
modem. The parity default value is none and must be used for ports configured for
network dial-in or dial-out operation. Table 10-2 describes the parity options.
To set the parity for a modem and its port, use the following command:
Command> set S0 parity even|none|odd|strip
Setting the Flow Control
The PortMaster supports both software flow control and hardware flow control.
Software flow control uses the ASCII control characters DC1 and DC3 to communicate
with the attached device and to start and stop the flow of data.
Table 10-2 Parity Options
Option Description
none Assumes 8 databits, 1 stop bit, and no parity bit.
even Assumes 7 databits, 1 stop bit, and even parity.
odd Assumes 7 databits, 1 stop bit, and odd parity.
strip Assumes 8 databits and 1 stop bit. The parity bit is stripped from the
datastream when it is received by the PortMaster.