User guide

In This Chapter
Chapter 5 Configuring Ports for Modems 22
Chapter 5 Configuring Ports for Modems
In This Chapter
This chapter describes how to configure Digi One/PortServer TS 2/4 ports for modem connections. It discusses
the following topics:
Tips on Configuring A Modem .....................................................................................................22
Configuring Ports for Modems: Web Interface .............................................................................23
Configuring Ports for Incoming Modem Connections: Command Line .......................................23
Configuring Ports for Outgoing/Bi-Directional Connections: Command Line.............................24
Configuring A Hunt Group............................................................................................................25
Tips on Configuring A Modem
Here are some tips on configuring modems to work with Digi One/PortServer TS 2/4:
• Configure the modem so that DCD goes high when it receives an incoming connection request.
• Configure the modem to answer an incoming call only when DTR is high, and to drop the line when DTR
goes low.
• For bidirectional connections, it is advisable to configure the non-volatile parameters in the modem for
incoming calls. Also configure the modem to reset to these parameters when DTR is dropped.
• Configure the modem to lock the serial line speed at the highest baud rate the modem will accept for reliable
data transfer because Digi One/PortServer TS 2/4 cannot switch the baud rate of the serial line on a per call
basis without reconfiguration.
Note: You may want to consider connecting modems using RealPort, a feature that allows network-based
host systems to use the ports of the Digi One/PortServer TS 2/4 as though they were the host system’s
own ports. It is an easy and efficient way for modems to use Digi One/PortServer TS 2/4 ports. For
information on this option, see Configuring Ports for RealPort.