
iLink is an industrial grade 4G modem for the mission critical and demanding
environment, such as telemetry, M2M communications, SMS application etc.
iLink comes with two interface options, Serial Interface and USB interface. You
can choose whichever that suites your need.
Challanges of modems
In most communication applications, the key component is the GPRS modem, which
requires it to perform reliably and virtually maintenance free.
For most industrial or mission critical applications, the modems are usually
deployed in either harse environments or places where it is difficult to access(
e.g. remote sites, data centers etc ).
Modems can and do hang up. It is only a matter of how frequent it happens.
And when that happens, chances are, it will not respond to any "AT" commands via
the serial port. The only effective option is to physically turn off/on the
modem.
While the task of restarting the modem may be easy, accesing the modem itself
may be a challenge if it is located in a remote area, or is running
unattended.

How does iLink overcome hanging conditions?
We recognize the issues of hanging modems, and the difficulties in having to
reset them on-site.
Which is why we have come up with an innovation called "RestartControl".
RestartControl is an innovative feature that allows your application to perform
a hardware restart of the iLink modem.
It makes use of the hardware handshaking signal instead of "AT" commands because
when the modem hangs, chances are, it will not respond to any "AT" commands.
iLink modem senses the com port hardware control to detect a restart command to
perform a hardware restart, bringing it back to a normal state.
It is easy for applications to send this restart command. For more the technical
details, please contact
sales@netlynxtech.com.

What can RestartControl do for you?
If you are a software developer of applications that utilise a GSM modem for
communications ( e.g. sending sms, remote dialup etc ), your application will
have have the capability to perform a restart of the modem if it goes into an
abnormal state.
The result is a much more robust and
reliable solution. Your system can auto-recover without any human
intervention!
What about 3rd party applications that cannot be modified to support
RestartControl?
iLink comes with a DOS command prompt that allows you to execute ( perhaps
remotely via remote control software ) that will perform a hard-reset of the
modem. This reduces the need for you to go down physically to the server to
reset the modem.
For example, you have an iLink modem that requires restarting.
With iLink, you can use remote desktop or ant remote control software to access
the server and run the command prompt to restart the modem.
This saves you time to go down to the data center to switch off/on the modem.

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