Motorola V3229 - 14.4 Kbps Modem Manual de usuario
V.3229 / V.3229L
Installation and Operation
Motorola
Doc. 6 209 5262 07 014
20 Cabot Boulevard
May 1995
Mansfield, MA 0204
(50 ) 261-4000
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Introduction
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Introduction
Chapter 1
Introduction
GENE AL
The UDS V.3229 and the V.3229L are versatile high
speed asynchronous or synchronous modems that
allow data transfer between two host computers via
the telephone communication system.
The modems can operate full duplex on both dial up
and leased lines. The modems are compatible with
all required standards and recommendations, and
feature a wide variety of automatic, remote, and
backup capabilities.
Major characteristics include:
¥14.4 kbps data rate
¥V.42 bis and MNP 5 error control protocols with
data compression
¥a V.25 bis autodialer
¥secure operation
¥trellis coding for superior signal to noise perfor
mance.
Data ates
The V.3229 operates at data rates of
¥7.2, 12.0, and 14.4 kbps trellis coded per CCITT
V.32 bis
¥9.6 kbps trellis coded and 4.8 and 9.6 kbps uncoded
per CCITT V.32 bis
¥2400 and 1200 bps per CCITT V.22 bis
¥300 bps per Bell specification 103
DESC IPTION
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Introduction
Functional
The V.3229 processes serial asynchronous data from
a DTE at all standard rates from 300 bps to 57.6 kbps,
and serial synchronous data at rates from 1.2 to 14.4
kbps. Transmission can be over the dial up telephone
network or 2 or 4 wire, point to point, dedicated
leased lines. The maximum telephone line speed is
14.4 kbps.
Built in test features can determine system perfor
mance and isolate faults in the data link.
Operation and configuration are controlled by either
the front panel LCD, the AT command set or V.25
command set. Changes can be made easily.
AutoConfiguration
AutoConfigure allows any of eleven option sets to be
quickly enabled or selected as the powerup configu
ration. There are two ways to enable option sets: the
LCD and the AT command set. Refer to Chapter 3
and 5 respectively.
Appendix D lists the nine factory option sets. For
maximum versatility two additional options sets de
signed by the user can also be stored for instant recall
or as the powerup configuration.
Remote configuration allows option changes to be
made to a remote unit.
Standard and L
Models
The modem is available in two models: standard and
the L model. The standard model has a 32 character
(liquid crystal display) LCD front panel with three
pushbuttons for option selection (Figure 1 1).
The L model has a TALK LED and TALK/DATA
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Introduction
button. The LED is on in talk mode and off in data
mode; the pushbutton selects between the two modes
(Figure 1 2).
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Introduction
<C#>-4 V.3229 / V.3229L
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Introduction
Both models have six light emitting diodes (LEDS)
to show communication status between the modem
and data terminating equipment (DTE).
Standalone and
Shelf Units
The standard and L models are available in both
standalone or shelf mount configurations. The pc
(printed circuit) boards are identical for either so that
the standalone board can be field changed for use in
the shelf or vice versa. Hardware straps on the pc
board offer additional customer options.
The shelf mount unit has edge connectors that insert
into the shelf backplane. The shelf backplane per
forms the same functions as the standalone rear pan
el.
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V.3229 / V.3229L <C#>-5
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Introduction
The standalone rear panel has an EIA 232 DTE
connector, an 8 pin (TELSET / LEASED LINE)
jack, and an 8 pin (DIAL) jack, the power switch,
fuse and power cord (Figure 1 3). Some versions
have a 110/220V selection switch.
HOW TO USE THIS
MANUAL
Most of the manual applies to both the standard and
the L model. Users of the L model can ignore
Chapter 3 and other explanations of LCD and push
button operation throughout the manual. However,
these discussions include valid operating informa
tion and can be consulted as desired.
Option Selection
There are six ways to change or select options:
¥LCD Using the front panel LCD and pushbuttons
is simple, straightforward, and requires the least
amount of technical background. Refer to Chapter 3.
¥ Software program A variety of software programs
is available, or advanced computer users can write
their own software programs to interact with the
modem. This manual does not discussed software
programs.
¥AT Commands The AT compatible command set
can be used to select modem options. Refer to
Chapter 5.
¥Status Registers A series of special ATS com
mands allows the user to change the decimal or
hexadecimal value of a memory byte to change one
or more options in that byte. Refer to Chapter 6.
¥Single Bit Commands A second series of special
ATS commands allows the user to change single bits
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Introduction
within a byte to change an option. Refer to Chapter 6.
¥V.25 bis Commands An extended set of V.25
commands allows selection of modem options dur
ing synchronous operation. Refer to Chapter 7.
Quick Startup
A quick startup procedure at the beginning of Chap
ter 4 provides information for quickly getting online.
Specifications
Appendix A contains modem specifications.
SECU ITY
Three separate security schemes prevent unautho
rized access to local and remote modems and DTEs:
¥An AT command password prevents remote config
uration of the modem.
¥An AT command password prevents remote access
to the DTE while operating in dial up mode.
¥An autocallback option requires the remote modem
to callback the originating modem using the remote
unit's autodial capability.
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Installation
Chapter 2
Installation
GENE AL
This chapter provides information for the mechanical
and electrical installation of the modem.
SITE
SELECTION
Install the modem within 6 feet of a standard 115 or
230 Vac grounded wall outlet as required for the
specific model and no further than 50 feet from the
terminal equipment.
The installation area should be clean and free from
extremes of temperature, humidity, appreciable
shock, and vibration. See equipment specifications
in Appendix A for details. Allow clearance for
operation and maintenance and at least 4 inches at
the rear for cables and air flow.
eceipt
Inspection
After unpacking the equipment, check the contents
against the packing list. Inspect the equipment for
any damage that may have occurred in shipment. If
any damage or equipment shortage is noted, refer to
the warranty literature. Keep the shipping container
and material.
Tools equired
Normal installation requires a screwdriver to secure
the data terminal equipment (DTE) cable to the mo
dem and to attach the telephone cable to the 42A
terminal block for leased line operation.
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Installation
Strap Inspection
Several hardware straps on the printed circuit board
may require changing prior to installation. Refer to
Strap Option Selection at the front of Chapter 3 for
information.
ELECT ICAL
INSTALLATION
The rear panel (Figure 2 1) houses connectors for the
DTE cable and telephone lines.
AC Power
Connection
Power is supplied through a 6 foot line cord with a
grounded 3 wire plug. If common ground is avail
able through the third prong of the plug, a separate
ground wire is not required. If the modem has a 110/
220V switch, select the appropriate voltage. If 220
Volt operation is selected, install the supplied 1/8
Amp fuse before connecting power to the modem.
DC Power
Input Option
Caution: o protect the dc to dc converter from
damage, ensure the positive and negative leads are
properly connected.
If the modem is equipped for dc power input, connect
12 to 60 Vdc power to the terminal block attached to
the modem back panel. A chassis ground connection
is also supplied on the terminal block.
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Installation
DTE
CONNECTION
The DTE connector is a 25 pin D series type con
forming to EIA 232 specifications. Pin signals are
shown in Figure 2 2 and described in Table 2 1.
TELEPHONE LINE
CONNECTION
The modem operates in one of three line related
modes:
¥Permissive (PSTN)
¥Programmable (PSTN)
¥Private line
Permissive and programmable modes are used on the
Public Switched Telephone Network (PSTN). Pri
vate line mode is used on 4 wire or 2 wire dedicated
leased lines. The user must decide which mode to
use and then select the telephone jack arrangement
accordingly.
PSTN Connection
Modems are registered with the Federal Communi
cations Commission (FCC) for direct connection to
the PSTN (dial up network). The label on the chassis
bottom gives the FCC registration number and other
information.
Direct connection to the PSTN provides two modes
of operation (Figure 2 3):
¥Permissive (standard)
¥Programmable
Permissive
In permissive mode, the modem transmits a maxi
mum signal level of 10 dBm. For standard tele
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