67
Appendix H Using Optional Modem Feature
Background
The modem option allows the Digital KVM via IP to act as an Internet connection server for increased
security and flexibility in connecting with the managed computers. Unlike the TCP/IP connection used
with the standard Web configuration and VNC clients, the modem creates a one-to-one connection
between the
Digital KVM via IP
and the computer you are using to manage your network that is
essentially private, as it bypasses the public Internet completely. Note this option requires both an
external modem (most standard connection protocols are supported) and a dedicated phone line that
can be connected to the modem for external access. While it is technically possible to use the modem
feature through some PBX systems, this increases the complexity and reduces the performance of the
connection. For clarity, the instructions presented here assume that the modem is connected to a
typical POTS (plain old telephone system) line that is not routed through a phone management system
or shared with other devices. If you wish to use this feature through a PBX system, it may require
some experimentation and additional support from your telecom services provider, and is not
supported by
Rextron
.
Activating the Modem Option
A system without the modem option enabled
The
Digital KVM via IP
contains the necessary hardware to attach a modem. To enable the modem
capability, you must purchase the software option from
Rextron
unless you have purchased a model
with the feature pre-enabled. To verify whether the modem feature is enabled on your unit, login to
the Web interface as Admin, click the Setup/Admin button at the top of the page, and click Firmware
and flash memory management. If MODEM is not listed beside Software Options (see above) then
the modem option is not present and you will have to purchase the software option to use the feature.
To purchase the modem option, please email
Rextron
Technical Support at
Have your model and serial number on hand. When asked, supply the technician with the code listed
under Purchase Options at the bottom of the Firmware and flash memory management page. Once
the order is processed, the technician will provide you with an Unlock code. Enter that code in the
space provided, and click Submit. The system will update itself to allow modem configuration.