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Virtual Null Modem
Virtual Null Modem The purpose of a null-modem cable is
to permit two RS-232 "DTE" devices to communicate with each other
without modems or other communication devices between them. Virtual
Null Modem is an utility, which purpose is to emulate one or more
RS232 serial ports connected via virtual null-modem cable. Otherwise,
you can create any number of pure virtual serial ports in your system
(COM10, COM11, COM127 etc), that will be connected to each other
via virtual null-modem cable. |
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Virtual Null Modem Features :
No reboot required for virtual serial port. Creating, installing
and removing of virtual serial ports occurs at real time;
No borders. You can create any number of virtual serial
port pairs with various shematics (with handshake, without handshake,
with parial handshake etc);
Virtual serial ports is fully independent. Any other hardware
or virtual serial ports are not used or occupied. You even can
have no serial ports in your system;
99.9% emulation. Other applications will never see the
difference between real serial port and virtual serial ports,
created by Virtual Null Modem software;
Perfomance. The link between two virtual serial ports is
faster then real null-modem cable connection and depends on your
computer system speed;
Hardware reliability. The virtual link is much more reliable
than common physical link;
Software reliability. Our drivers for virtual serial ports
had been tested with the verifier under Windows XP SP2 and with
Microsoft HCT 12.10;
Hi-tech. Virtual Null Modem uses kernel driver technology
and supports: WDM, WMI, Power Management, PNP, etc.;
Easy-to-use. Virtual Null Modem software has a simple,
menu-driven step by step set-up. Programming is not required to
configure the software to configure virtual serial ports and virtual
serial ports pairs;
Additional features. If you are software developer, then
you can configure each port to simulate a real-world data exchange
with errors in data;
Scalability and integrability. You can add, remove virtual
null modems from your application by using a command line interface;
On-line help. Press the F1 key at anytime and on-line help
will appear providing concise and up to date documentation.
Virtual Null Modem supplies a three cut down versions called Professional,
Standard and Lite. Standard and Lite versions omit some of the
advanced features found in the professional edition and is ideal
for users who either want a low cost or free solution or are not
interested in more advanced features. Read more
What problems can be solved with Virtual
Null Modem?
If you have two applications you want to connect to each other
using serial ports you need a null modem.
A null modem is bascially a cable to connect two serial ports
to each other.
Normally you need two computers or two physical ports on one computer
to achive this.
Using Virtual Null Modem software you can emulate the null modem
and run the two applications on the same computer without any
additional hardware
Example: You can create two virtual serial ports: COM10 and COM12
and connect two different applications to them. Everything, that
application #1 will send to COM10 will be received by application
#2 at COM12, and all that application #2 sends to COM12 will be
received by application #1 at COM10.
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