HP NetRider manual Specifying Signal Select, Determining When to Use a Signal Set

Specifying SIGNAL SELECT

Specifying SIGNAL SELECT

Introduction

The SIGNAL SELECT characteristic is used only with MODEM CONTROL access servers. This characteristic determines which of two sets of signals that the access server uses:

∙CTS, DSR, RTS, and DTR or

∙RI, DCD, DSRS, and DTR

The port device must be cabled correctly to work with the set of signals that you choose.

Determining When to Use a Signal Set

The following shows when to use these signals:

∙If the modem speed is below 9600 baud, configure the port SIGNAL SELECT characteristic to RI-DCD-DSRS-DTR.

∙If the modem speed is 9600 baud or above, configure the port SIGNAL SELECT characteristic to CTS-DSR-RTS-DTR.

NOTE

A maximum supported baud rate of 9600 on a modem is a guideline for signal set selection. The signals used are a factor of modem technology, not the actual baud rate for data tranfer.

Enabling CTS/RTS flow control for access servers with attached modems with 9600 baud or greater enables a faster response time from the access server hardware.

In order to enable SIGNAL CONTROL, you must configure SIGNAL SELECT.

Example: Enabling SIGNAL SELECT

The following example shows to configure SIGNAL SELECT to CTS-DSR-RTS- DTR on port 10:

Local> DEFINE PORT 10 SIGNAL SELECT CTS-DSR-RTS-DTR

Local> LOGOUT PORT 10

Configuring Modem Signals 10-9