US Robotics 002805-00 Manual de usuario
Courier V.Everything External Modem:
Getting Started
FINAL
4/96
p/n 1.024.492
1996 U.S. Robotics Access Corp.
8100 North McCormick Blvd.
Skokie, IL 60076-2999
All Rights Reserved
U.S. Robotics and the U.S. Robotics logo are registered
trademarks of U.S. Robotics Access Corp. V.Fast Class and V.FC
are trademarks of Rockwell International. Any trademarks,
tradenames, service marks or service names owned or registered
by any other company and used in this manual are the property
of their respective companies.
1996 U.S. Robotics Access Corp.
8100 N. McCormick Blvd.
Skokie, IL 60076-2999 USA
Table of Contents
About This Manual iii
We Welcome Your Suggestions.............................................................iii
Chapter 1 The Courier 1-1
Courier Controls, Displays, and Connectors.....................................1-3
Status Indicators ....................................................................................1-4
Features...................................................................................................1-5
Chapter 2 Installing the Courier 2-1
What You Need......................................................................................2-1
Package Contents...................................................................................2-3
Installing the Courier............................................................................2-4
Setting the DIP Switches.......................................................................2-4
Powering On the Courier.....................................................................2-6
Chapter 3 Communicating with the Courier 3-1
Windows 95............................................................................................3-1
Windows 3.x...........................................................................................3-5
DOS..........................................................................................................3-6
OS/2 ........................................................................................................3-6
Mac OS ....................................................................................................3-7
Windows NT..........................................................................................3-7
UNIX/Linux/AIX...............................................................................3-10
Mainframe OSs ....................................................................................3-10
Testing the Courier..............................................................................3-11
Chapter 4 Other Features 4-1
Volume Control .....................................................................................4-1
The Voice/Data Switch.........................................................................4-2
Getting Information About Calls ........................................................4-6
MI/MIC Operations..............................................................................4-7
Chapter 5 Setups for Common Windows Software Packages 5-1
Appendix A The Serial Port A-1
The EIA-232 Interface...........................................................................A-1
For Macintosh Computers...................................................................A-3
Appendix B Technical Specifications B-1
Standards Compatibility...................................................................... B-1
Appendix C Warranty and Notices C-1
Limited Warranty.................................................................................C-1
Notices....................................................................................................C-3
About This Manual
This manual explains how to set up and start using your Courier
V.Everything External Modem.
Refer to the Command Reference manual, also included with the
Courier, for detailed information about using advanced features.
We Welcome Your Suggestions
We’ve made every effort to provide you with useful, accurate
information. If you have any comments or suggestions about
these materials, please let us know.
Voicemail: (847) 933-5200
Email: [email protected]
The Courier 1-1
Chapter 1
The Courier
The Courier V.Everything External Modem makes any computer or
terminal with an EIA/RS-232 serial port (or a Macintosh serial
port) capable of exchanging data with modems or fax machines
over standard, analog telephone lines at speeds of up to
33.6 Kbps.
Using the Courier
The most common uses of the Courier modem are for accessing
the Internet or online services, accessing corporate networks
remotely, calling bulletin board systems (BBSs), and for sending
or receiving facsimiles or files.
Using the Courier always requires some kind of
communications software. The software required differs
depending on what you’re trying to do.
Accessing the Internet
To access the Internet, you need to set up an account with an
Internet service provider in your area. Often, Internet service
providers supply you with the software you’ll need. In other
cases, support for Internet access is built in to your computer’s
operating system, as is the case with Windows 95.
The software needed to access the Internet is called a TCP/IP
protocol stack. Your TCP/IP protocol stack must provide a
dialing application that is capable of sending data over a serial
line using the Point-to-Point protocol (PPP) or the Serial Line
Internet Protocol (SLIP).
1-2 Courier V.Everything External Modem: Getting Started
Calling Online Services
Each online service, such as America Online or CompuServe,
provides its own customized communications software package.
A couple of these packages are included with the Courier. These
packages do the dialing and guide you through the steps of
registration.
Accessing Corporate Networks Remotely
Dialing in to a remote network requires remote access software.
When you dial in to a network, the software makes your remote
computer appear to the network as locally attached. You can
then use your network just as you would if you were there: send
mail, print files, and access LAN drives.
A remote access package is included with the Courier.
Calling Bulletin Board Systems (BBSs)
Calling a BBS requires communications software that does
terminal emulation. The software should also support common,
standard file transfer protocols, such as YMODEM and
ZMODEM.
A communications software package is included with the
Courier.
Sending Facsimiles or Files
Most communications software packages support file transfers
and many support fax operations. You can use fax-capable
software to call fax machines or other fax modems and send
facsimiles.
The Courier 1-3
Courier Controls, Displays, and Connectors
These figures show the controls, displays, and connectors on the
Courier and indicate where to find more information about
each.
AA CD NS RD SD DTR MR RTS CTS SYNC ARQ/
FAX
HS VOICE/DATA
COURIER
V.EVERYTHING
with V.34
Status LEDs
Voice/Data Switch
Volume Control
SEE PAGE 4-2
SEE PAGE 4-1
SEE PAGE 1-4
Figure 1-1. The Courier V.Everything Modem (Front).
To Wall JackTo Telephone
To AC Power To Computer
Power
Switch
SEE PAGE 2-4 SEE PAGE 2-4
SEE PAGE 2-6
SEE PAGES 2-4 and A-1SEE PAGE 2-4
Figure 1-2. The Courier V.Everything Modem (Back).
1-4 Courier V.Everything External Modem: Getting Started
Status Indicators
The Courier displays its status using 12 light-emitting diodes
(LEDs) that are visible from the front.
Table 1-1. The Courier's Status Indicators.
HS High Speed
On 4800 bps or faster connection. Once on, remains on until reset.
Off The Courier has not made a 4800 bps or faster connection since last
reset.
AA Auto Answer Status
On Auto-answer on.
Blinking Incoming call detected.
Off Auto-answer off.
CD Carrier Detect Status
On Carrier detected from remote device, or carrier detect forced on
(using DIP switch 6).
Off Carrier not detected.
OH Off Hook
On The Courier has control of the line.
Off The Courier does not have control of the line.
RD Received Data Status
Flashing The Courier is sending data to your computer.
Off Idle.
SD Send Data Status
Flashing The Courier is receiving data from your computer.
Off Idle.
TR Data Terminal Ready Status
On DTR signal received from your computer, or DTR is forced on (using
DIP switch 1).
Off DTR not detected.
MR Modem Ready
On The Courier is powered on.
Flashing The Courier is retraining with a remote device or is in test mode.
Off The Courier is powered off.
RS Request to Send Status
On RTS signal received from your computer.
Off RTS signal not detected.
CS Clear to Send Status
On The Courier is sending your computer the CTS signal.
Off The Courier is not sending your computer the CTS signal.
continued…
The Courier 1-5
SYN Synchronous Status
On The Courier is in synchronous mode.
Blinking Dial security is active.
Off The Courier is not in synchronous mode/dial security not active.
ARQ/FAX Error Correction/Fax
On Error correction is active.
Flashing The Courier is retransmitting data to the remote modem.
Blinking The Courier is in fax mode.
Off Error correction not active/not retransmitting data/not in fax mode.
Features
33.6 Kbps Connectivity
The Courier contains software that enables 31.2 and 33.6 Kbps
connection rates, as well as improves throughput at lower
speeds. While line conditions may not always allow for
33.6 Kbps connections, the new software makes it more likely
that your Courier will achieve and maintain 28.8 Kbps
connections. It can add up to 4800 bps to the average V.34
connection rate.
Selective Reject
Selective Reject is an optional part of the ITU V.42 (LAPM)
specification. This feature improves performance on noisy lines
by reducing the amount of overhead incurred when the protocol
must resend data due to errors.
When selective reject is active, only the frame that contained the
error is resent, instead of the frame plus all of the following
unacknowledged frames. You can disable selective reject by
changing a setting in S-Register 51 (see Appendix A, Alphabetic
Command Summary, in the Courier Modems Command
Reference manual).
Attaining Speeds Above 28.8 Kbps
V.34 connections at 21.6, 24.0, and 26.4 Kbps are common. To
get connections of 28.8, 31.2, and 33.6 Kbps, line quality must be
pristine end-to-end. In addition, 31.2 and 33.6 Kbps connection
rates are possible only when the device to which you are
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