StarTech.com CABCONS1716I manual Connecting a Modem, Modem Connection

Connecting a Modem

Modem Connection

The CABCONS1716I will work with virtually any Hayes-compatible modem capable of recognizing the standard AT command set. Some modem manufacturers offer “enterprise” grade modem products 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 CAB

CONS1716I

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 CABCONS1716I, but simply reflect the line conditions at the time the connection is made.

The Serial port can be used for serial port configuration when the modem is connected. It requires the use of a null modem serial cable.

Place the modem near the CABCONS1716I and an available telephone jack. Connect the modem to the telephone jack, data cable, and power source according to the instructions in its documentation. The opposite end of the modem’s data cable should be a DB9 female serial connection. Connect that end of the cable to the Serial connection on the rear panel of the CABCONS1716I.

Instruction Manual

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