User guide

eWON 500-2001-4001-4002 User Guide - eWON Configuration
eWON 500®2001®4001®4002® Version 4_3_0 - User Guide - 10/5/05 - ©ACT'L sa - Page 31
*HW Mode:further information will be added soon.
When using modem port for VCOM, the following must be considered:
• Modem serial port is normally owned by PPP:
• If an SMS transfer is in progress and a VCOM client tries to connect, the VCOM connection will fail.
• If a VCOM client is connected, and an SMS must be sent, the SMS sending will fail.
• When an SMS transfer or a VCOM connection ends, the PPP is again the owner of the modem serial port.
Always accept new clients
When a PC is connected to the eWON, then a socket is opened by the PC to the eWON. If for
example the PC suddenly switches off, the eWON will not know that the socket should be closed, and
when the PC will try to connect again, the eWON will refuse its connection. This option is provided in
order to avoid that situation; when checked, the eWON will always be ready for a new connection, and
the new connection will replace the previous connection.
This means also that if one PC is connected to the VCOM port, and that another PC tries to connect
with this option checked, the new PC connection will be accepted and the existing PC connection will
be closed.
Inactivity Timeout
There is another way to avoid that an unused but opened socket prevents access to the eWON
(if the previous option has NOT BEEN checked).
If you set this option with a value different of 0, then the eWON will close its VCOM socket if there is
no communication for a given amount of time.
If serial communication is supposed to occur all the time this option can be useful,
but if silence in communication is expected, then this option will obviously not apply.
Line parameters
Except for HW Mode, which is only configurable through the WEB interface, these parameters are
only used when the port is configured in RAW TCP mode, because in TELNET RFC2217 mode the
PC virtual port will usually change them. In any case, this will define the initial or default values.
HW Mode REM: This mode can not be controlled remotely by RFC 2217*
Table 11: eWON virtual COM port configuration controls