Motorola V3229 - 14.4 Kbps Modem User manual

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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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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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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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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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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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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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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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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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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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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phones the jack arrangement is RJ11C . Cable PN
61020202 0301 connects the DIAL jack on the back
of the modem to the RJ11C wall jack.
Programmable

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Programmable mode corrects for the signal level loss
between the modem and the telephone company
central office. This is done by setting the modem
transmit output signal level with a resistor selected
and installed in the jack by the telephone company.
This allows the output signal to reach the central
office at the optimum level of 12 dBm. Jack ar
rangements for this mode are the RJ45S (Program
mable) and RJ41S (Universal). The RJ41S has a
switch option that must be selected to Programmed
(P). Cable PN 61020192 0301 (not supplied with
modem) is used to connect the DIAL jack to the
RJ41S or RJ45S wall jack.

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* Modem options may force these signals on or cause them to be ignored.
Table 1:
Pi
n
N
o.
EIA-
232D
CCI
TT
V.24
Signal Name Description
1 101 Shield Protective Ground
2 BA 103 Transmitted
Data
Serial digital data (to be modulated)
from a data terminal or other digital
data source: Synchronous data must
be accompanied by the modem
transmit clock (pin 15) or by an exter
nal data rate clock (pin 24). Data
transitions should occur on negative-
going clock transitions; asynchro
nous data does not require a transmit
clock.
3 BB 104 Received Data Serial digital data output to the DTE
interface: Sync data is accompanied
by an internal data rate (receive)
clock (pin 17) with negative-going
transitions on the data transition.
Async data does not require a receive
clock.
4 CA 105 Request to
Send
A positive level to the modem when
data transmission is desired
5 CB 106 Clear to Send A positive level from the modem in
response to request to send and
when the modem is ready to transmit*
6 CC 107 Data Set Ready A positive level from the modem
when power is on and ready to oper
ate. In dial-up operation, the modem
must be off hook to give a high DSR
signal.*
7 AB 102 Signal Ground
or Common
Return
Common signal and DC power
ground
CF 109 Received Line
Signal Detector
A positive level from the modem indi
cating the presence of a received sig
nal (carrier detect)*
9 +12 Volts +12 voltage reference
10 -12 Volts -12 voltage reference

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* Modem options may force these signals on or cause them to be ignored.
his function can be disabled or its logic sense reversed by hardware straps.
Table 2:
Pi
n
N
o.
EIA-
232D
CCI
TT
V.24
Signal Name Description
11 Signal Quality
Indicator
This circuit indicates probability of er
rors in the received data: a positive
level indicates poor signal quality
while a negative level indicates good
signal quality.
15 DB 114 Transmit Clock
(DCE)
A transmit data rate clock output for
use by the DTE equipment. Negative
clock transitions correspond to data
transitions.
17 DD 115 Receive Clock A receive data rate clock output for
use by the DTE equipment. Negative
clock transitions correspond to data
transitions.
1 141 Local Loopback
(Loop 3) Control
A positive level causes the modem to
enter the local analog loopback test
mode.*
20 CD 10 .
2
Data Terminal
Ready
This circuit is positive when the DTE
is ready to originate or answer a call
in dial-up operation. DTR must al
ways be active (high) in 2-wire private
line operation. Cycling DTR causes
retraining.*
21 140 Remote Digital
Loopback
A positive level causes a digital loop
back test mode at the remote mo
dem.
22 CE 125 Ring Indicator In dial line operation this circuit is
positive in response to an incoming
ring signal.*
23 CH 111 Data Rate Se
lect
Supplies a data rate control input to
select primary or fallback data rate:
Negative voltage selects primary
data rate and positive voltage selects
fallback data rate.*
24 DA 113 External
Transmit Clock
A serial data rate clock input from the
data source. Negative clock transi
tions correspond to data transitions.
25 142 Test Mode Indicates the modem is in a test mode

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Refer to Strap Options.
Note: he modem is compatible with exclusion key
phone arrangements.
Leased Line
Connection
The modem operates on either 2 wire or 4 wire
leased lines. The telephone company will install the
leased line and wall jack at your site. The line
connects to the modem at the 8 position TELSET/
LEASED LINE jack.
The 42A block is the most common termination for
leased line use. It requires the use of the 8 pin
modular to spade lug cable (PN 61020569 0000).
Figure 2 4 illustrates the typical hook up of the mo
dem for operation over private leased lines with dial
backup.
Note: Although the 42A block is the most common,
some Bell operating companies have discontinued its
use for leased lines. Instead, the modular jack JM8
is used. If this is the case in your area, you need a
special cable (PN 61020575-0000). Contact your
distributor for further information.

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V.3229 / V.3229L <C#>-1
3
Option Selection
Chapter 3
Option Selection
GENE AL
Note: his chapter contains the options available by
pushbutton in response to the LCD. Users of the L
model are encouraged to consult the different sec
tions of this chapter as appropriate for further infor
mation on modem operation and option selection.
Nine factory option sets provide complete setups for
most data communication arrangements. The mo
dem is shipped configured to factory option set #1.
Appendix D lists the options for each set. Because
of the number of possible applications, most modems
require some option changes to fit the application.
Two user programmed option sets are also available.
These allow the user to configure customized option
sets and store them in memory for immediate recall
or as the powerup configuration.
The AutoConfigure feature, explained later in this
chapter, allows immediate use of any stored option
set.
ST AP OPTION
SELECTION
Modem configuration is controlled by front panel
pushbuttons and the LCD, AT or V.25 bis com
mands, and hardware option straps located on the pc
board. Normally straps do not have to be changed.
If a change is required, remove the modem cover to
access the option straps.

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3
Option Selection
The strap diagrams on the following pages indicate
the factory settings.