Black Box 37687, User Manual

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Terminal Server User Guide
Configuring ports to use Vmodem
Page 89
Chapter 7 Vmodem (Virtual modem)
Making a Call using Vmodem in Normal Mode
Using Vmodem, telephone numbers are replaced by the IP address and TCP port of the
Vmodem port you are calling.
1. To place a call using the device attached to a Vmodem port, the ATD sequence would be:
ATD<IP address><Port>
Where:
IP address is the IP address of the Terminal Server unit that you are calling. where each
number is represented by three digits (padded using zeros where necessary) with no
separating dots.
Port is the local TCP port of the Vmodem port on the Terminal Server unit you are calling,
(By default the TCP port is 10000 plus the number of the serial port using Vmodem.
For example, Port 12 would become 10012).
For example, to connect to a host Terminal Server with an IP address of 196.65.144.236
and serial port 4 configured as Vmodem normal mode, the ATD sequence would be;
ATD19606514423610004 (This is not echoed by the port)
The Vmodem now returns a numerical or text string to indicate either a successful or
failed connection.
2. You can configure how this indication is displayed see the appropriate section within this
note.
Disconnecting a Call in Vmodem Normal Mode
To disconnect a call, the se++ATH is sent to the Vmodem port.