Contents:

Product Features

Installing Your Modem

Using the AT Command Set

Upgrading your Modem

Modes of Operation

Dialing, Answering, and Hanging Up

Configuring with DIP Switches

Working with Memory

Controlling Result Code Displays

Controlling EIA-232 Signaling

Accessing and Configuring the Courier 56K Business Modem Remotely

Controlling Data Rates

Dial Security

Flow Control

Handshaking, Error Control, Data Compression, and Throughput

Displaying Querying and Help Screens

Testing the Connection

Dedicated/Lease Line and Synchronous Applications

Troubleshooting

Appendixes

S-Registers

Alphabetic Command Summary

Flow Control Template

Result Code Meanings and Sets

Technical Information

V.25 bis Reference

ASCII Chart

Fax Information for Programmers

Viewing LEDs

Regulatory Information and Limited Warranty

Glossary

Product Features


V.92 Technology


The V.92 standard is an exciting advancement in 56K technology. V.92 offers three functions to enhance the current V.90 standard.

The first enhancement is the “V.PCM-Upstream” technology, which allows a modem's upstream communication to reach speeds of 48,000 bps. The V.90 standard limited upstream speeds to 31,200 bps.

The second enhancement is Quick Connect, which permits quicker dial-up connections by allowing the modem to remember the line conditions of a service provider that supports V.92. The first time that you connect with your service provider, the modem will perform the full training sequence and store the information it receives. This eliminates the need for the modem to go through the full training sequence during subsequent connection attempts reducing the connection time by 30 - 50%. If the modem is unable to make an optimal connection any time after the initial attempt, the modem will perform the full training sequence.

The third enhancement is the “Modem On Hold” technology, which allows your Internet connection to be suspended when there is an inbound telephone call. You can then return to the connection when the call is completed without losing the connection. If you are connecting to a service provider that supports V.92, you will receive a message informing you of an incoming call.*† In addition, if you subscribe to Caller ID service, the number of the incoming call will be displayed in the computer's message window. You will then have the option to accept the call or to ignore it. If you are connecting to a V.92 server and choose to accept the call, another message will appear notifying you of the length of time that the provider's system will wait on hold before the data connection is terminated. If you are connecting to a server that does not support V.92, you will receive a message informing you of an incoming call. You will then have the option to accept the call or to ignore it. If you choose to accept the call, your data connection will be terminated.

Included on the Installation CD-ROM is the Instant Update software. The Instant Update software automatically notifies you of any updates to your modem's code.

Contact your service provider to find out when your ISP will offer V.92 technology. This modem is backward compatible and will negotiate the highest possible speed when connecting to a service provider.

* You must subscribe to Call Waiting service with your phone company in order to use the “Modem On Hold” enhancement.
† If your incoming calls immediately forward to voice mail, you will not receive this message.


V. Everything Technology


The modem supports all key ITU analogue communications protocols and many proprietary ones to provide you with ultimate compatibility. The modem also supports V.25bis synchronous mode using bisync and HDLC protocols and 2-wire leased line operations for compatibility with many legacy systems.


V. Everywhere Technology

The V.Everywhere technology in this modem allows this modem hardware and firmware to be used anywhere in the world. A simple setup to configure the modem for the country of operation is all that is required.


Remote Flash
You can easily upgrade your modems in the field from the convenience of your local office by enabling the remote “flash” capability of the modem. See the “Upgrading” chapter of the Command Reference included on the Installation CD-ROM.


Dial and Dialback Security
The modem provides you with a robust mechanism for providing dial and dialback security for your network. See the “Dial Security” chapter of the Command Reference included in the Installation CD-ROM.


Remote Manageability

The modem can be remotely configured and monitored for the convenience of your local office. See the “Accessing and Configuring Remotely” chapter of the Command Reference included in the Installation CD-ROM.



 

 

 

Rev. 1.0
10/04
R46.0465.00

USRobotics USRobotics