Modem Emulation - Equinox Systems ESP-2 MI Installation And User Manual

Table 9: Raw TCP Client Connection Method Configurable Items (Continued)
Item Description
Specifies the IP address of the remote server. This is a required item; there is
Destination IP no default value. Only a single destination address can be configured for each
address serial port. The address cannot be 0.0.x.x, 127.x.x.x, 192.1.1.1, 248-255.x.x.x
or the IP address of the ESP-2 hub.
Destination IP Specifies the IP port number on which the remote server is listening. Valid
port number values are 0-65535. The default value is 4001 for port 1 and 4002 for port 2.
Specifies the IP port number for the embedded TCP client. Valid values are
Local IP port 1024-65535. This value cannot conflict with port numbers specified for other
number enabled connection methods on the other port. The default value is 4001 for
port 1 and 4002 for port 2.
Specifies the length of time before the TCP session is disconnected if there is
no activity. Valid values are 0-65535 seconds.
Inactivity time-
For example, a value of 60 indicates the TCP session will be disconnected if
out
there is no activity for a period of 60 seconds.
A 0 value disables the inactivity time-out. The default value is 0 (disabled).
Specifies the criteria for establishing the TCP connection. Valid values are:
Autostart
Connection Connect on Data
mode
Connect on DCD
Specifies the length of time accumulated serial data should be buffered before
being sent to the remote server. Valid values are 0-65535 hundredths of a second.
For example, a value of 100 indicates that once serial data is received, the
Serial ESP-2 hub will buffer the data until 1 second (100 hundredths of a second) has
buffering elapsed, at which time all data will be sent.
A 0 value indicates that data will be sent as soon as it is available.
The default value is 0 (send immediately). If the buffer becomes half full, the
time is ignored and the data is sent.
Enables or disables buffering of received serial data while waiting for a TCP
connection to be established. The default value is disabled.
Idle TCP
When enabled, the most recent 20K bytes of data are held in an internal buffer.
buffering
Once the connection is established, the buffered serial data is sent to the
remote endpoint of the TCP connection.

3.5 Modem Emulation

The modem emulation connection method enables an ESP-2 hub to emulate modem
dial and answer functionality. The hub presents a Hayes-compatible modem interface
to the attached serial device by accepting AT modem commands and performing the
required functions.
This connection method is valid only on RS-232 ports.
14
Always attempt to establish the TCP connection.
The TCP connection will be established upon receiving
the first data character from the serial port.
(Valid only on RS-232 ports.) The TCP connection will be
established when the DCD signal is logically high.
Equinox ESP-2 MI Serial Hub Installation and User Guide