SV1110IPEXT Instruction Guide
47
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 SV1110IPEXT 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 beneficial to
your application depends on whether you consider the modem connection to be mission-
critical, the quality of your telecom infrastructure, and your budget for implementing this
solution. The model of modem attached is essentially transparent to the SV1110IPEXT.
It is important to note that modems that offer “56K” (or 56,000 bps) connections often
achieve connection speeds that are far lower than their maximum capabilities. Given the
limitations of telecom infrastructure (many locations have yet to implement fully digital
switching technology, and still rely on older analog technology for some segments), the
maximum “upstream” transfer rate is limited to a maximum of 33,600 bps between two
modems; the “downstream” rate is often within a similar range for a typical connection.
Therefore, speeds below 56,000 bps do not indicate a problem with the modem or the
SV1110IPEXT but simply reflect the line conditions at the time the connection is made.
Front Panel (DTE Serial Port)
