Connect-Tek Over IP
51
Appendix E Using Optional Modem Feature
Background
The modem option allows the CTIP-01 to act as an Internet connection server for increased security and
flexibility in connecting with the host computer. Unlike the TCP/IP connection used with the standard Web
configuration and VNC clients, the modem creates a one-to-one connection between the CTIP-01 and the
computer you are using to manage the host computer 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 Connect-Tek.
Activating the Modem Option
A system without the modem option enabled
The CTIP-01 contains the necessary hardware to attach a modem. To enable the modem capability, you
must purchase the software option from Connect-Tek 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, contact Connect-Tek Technical Support:
sales@connect-tek.com
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.
Connecting a Modem
The CTIP-01 will work with virtually any Hayes-compatible modem that recognizes the standard AT
command set. Some modem manufacturers offer “enterprise” grade modem products (at a premium price)
that include technology to improve the stability of connections; whether this type of product would be
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