Racal-Vadic 9600VP User manual
Racal-Vadic
9600VP
Auto-dial
Modem
USER'S GUIDE
Second Edition
First
Printing
October 1987
Publication
Na
18008-286
I11llJ&llJlJ
Please
address
comments
about
this
manual
to:
Racal-
Vadic
Corporate
Communications
1525
McCarthy
Boulevard
Milpitas,
California
95035
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©
1987
by
Racal-Vadic.
WARRANTY, LIMITATION
OF
LIABILITY, AND
SERVICE
INFORMATION
Racal-Vadic warrants that its products
will
perform in accordance with
Raca!-
Vadic's
published specifications (or the specification agreed to, in writing, by Buyer and
Raca!-
Varlic,
and made apart ofthe sales contract), for aperiod of
12
months from date
of
original shipment.
During this warranty period Racal-V
arlic
will, at
no
cost, promptly repair orreplace
any
defective equipmentreturned to Racal-Vadic, transportation charges prepaid by Buyer, and
will
return such equipment, transportation charges prepaid via the same orlike method
as
receive, except where special handling or shipment
is
requested by Buyer, in which case
Buyer
shall
pay allsuch charges. This wammty shall not apply to damage resulting from
abuse, negligence, accident, orloss ordamage in transit. The warranty shall
be
voided
should the Buyer attempt any repairs oralterations without prior written permission of
Racal-Vadic.
Racal-Vadic makes
no
other warranty, expressed orimplied, and Racal-Vadic DISCLAIMS
ANY
IMPLIED
WARRANTY
OF
MERCHANTABILITY
OR
FITNESS
FOR A
PARTICULAR PURPOSE.
THE BUYER
AND
Racal-
Vadic
AGREE
nIAT
THE
SOLE
AND
EXCLUSIVE
REMEDIES
FOR BREACH
OF
ANY
WARRANTYCONCERNING THE
GOODS
SHALL BE REPAIR
OR
REPLACEMENT
OF DEFECTIVE
PARTS
UPON THE
TERMS ABOVE DESCRIBED
OR,
AT
Racal-Vadic's OPTION, REFUND OFTHE
PURCHASE
PRICE.
Raca!-
Vadic SHALL
NOT
BE
LIABLE FOR CONTINGENT
OR
CONSEQUENTIAL
DAMAGES
TO
PERSONS
OR
PROPERTY
AND
ITS
SOLE
LIABILITY IS
AS
ABOVE
SET FORlH.
Any
action by Buyerfor any alleged
breach
of
the
warranty set forth herein shall be
brought to the attention
of
Racal-
Varlic
by Buyerwithin the warranty period, but not later
than
30
days after the alleged Breach.
TInS
STA
1EMENT
OFWARRANTY
AND
LIMlTATION
OF
'LIABILITY IS A
COMPLETE
AND
EXCLUSIVE
STA
lEMENT
OF
ALL
WARRANTY
AND
LIABILITY
REPRESENTATIONS OF
RACAL-
V
ADIC.
Itmay not bevaried, supplemented,
qualifiedorinterpreted by any priordealings between the parties orby any usage
of
the
trade orupon the face or reverse
of
any form to which this is attached orapart of, nor may
it
be
modified
by
any agent, employee, orrepresentative
of
Racal-Vadic unless such
modification orrepresentation is made
in
writing and signed by aduly authorized officerof
Racal-Vadic.
Repairs
and/or
replacement under
the
terms
of
this warranty SHALL NOT EXTEND THE
WARRANTY
LIFE OF THEORIGINAL EQUIPMENT SUPPUED. Afterthis warranty
has
expired, service can be purchased directly
from
R~al-
Vadic.
Equipment returned
to
the factory should
be
accompanied
by
the following infonnation:
the
reason for return, with acomprehensive description of
the
malfunction; shipping
instructions; and the name and telephone number ofacontact in
the
event ofproblems.
CONTENTS
xFCC PART
68:
REQUIREMENTS FOR END
USERS
xi FCC PART
15:
RADIOrrv INTERFERENCE
xii CANADIAN D.O.C.
REQUIREMENTS
FOR END USERS
Chapter 1INTRODUCTION
1-1
PROOUCfOESCRIPTION
1-2 FEA
lURES
1-2 CONVENTIONS
Chapter 2INSTALLATION
2-1
UNPACK YOUR 9600VP
2-1
MODEM
CONNECTIONS
2-1
Connect
the
Modem
to
Your Computer
or
Terminal
2-1
Connect the
Modem
to
the Telephone Line
2-
2Leased-Line Operation
2-2 Connect the
Modem
to
the
Electrical Outlet
2-3 Connect
an
Optional Telephone
to
the
Modem
2-4 CONFIGURE
TIm
MODEM
2-4 DSR and CXR Control
2-4 Terminal Speed
2-4 Line FeedAfter Carriage Return
2-4 Flow Control
2-5 Speed Conversion
2-5 Speed and Parity
2-5 COMMUNICATIONS
SOFTWARE
2-5 ErrorControl
2-5 AT-Compatible Software
2-6 Software Packages
2-6 How To Set
Up
Crosstalk (Version 3.6 orHigher)
2-7
Carbon Copy
2-7
Case-Up
2-7
Co-Session
2-7
Reflection Series
Chapter
3Racal-Vadic OPERATION
3-1
MAKING
TIm
MODEM
INTERACTIVE
wrIH
TIm
TERMINAL
3-1
EDITING
COMMANDS
3-2 STORING NUMBERS
IN
MEMORY
LOCATIONS
3-2 How To Store aTelephone Number in Memory
3-3 How To Store aTelephone Number Description
3-3 How To Display the Memory Locations
3-4 ERASING MEMORY
LOCATIONS
3-4 How To Erase aTelephone Number from Memory
3-4
How
To Erase All Telephone Numbers Stored in the Modem's Memory
v
CONTENTS (continued)
Chapter 3Racal-Vadic Operation (continued)
3-5
LINKING
MEMORY
LOCATIONS
3-5
How
To Link:
Two
Numbers
3-6
How
To Link
Two
Numbers
to
a'Third Number
3-6
How
To Change aLink
3-6
How
To
Clear aLink
from
Memory
3-7
DIALING
3-7
How
To Dial
from
the
Keyboard
3-7
How
To
Stop
Dialing
3-8
How
To Dial a
Number
Stored in
Memory
3-9
How
To
Redial
from
the
Keyboard
3-9
MODEM
STATISTICS
3-10
OPTIONS
3-10
How
To
Display
an
Option
Setting
3-10
How
To Change
an
Option
Setting
3-11
How
To
Change
Several
Option
Settings
at
One
Tune
3-13
How
To
Display
the
Option
Settings
Table
3-14
OPTION
DESCRIPTIONS
AND SETIINGS
3-20
OPTIONAL
DIALING
FUNCTIONS
3-20
How
To
Dial
a
Tandem
Number
3-20
How
To Blind Dial
3-20
Pulse
Dialing and
Tone
Dialing
3-20
HOW
TO
DISCONNEcr
DURING
Racal-Vadic
OPERATION
3-21
AUTOMATIC
ANSWERING
3-21
UST
OF
CO~S
Chapter 4FRONT PANEL OPERATION
4-1 THEFRONTPANELKEYPAD
4-4 SIGNAL
INDICATOR
LIGHTS
4-5
DIALING
4-5
How
To
Dial
with
a
Telephone
4-5
How
To
Dial aStored
Telephone
Number
4-6
How
To Redial a
Telephone
Number
4-6
How
To
Stop
Dialing
4-6
SWITCHING
BElWEEN
VOICE
AND
DATA
COMMUNICATION
4-6
How
To Switch
from
Voice
to
Data
Communication
4-7
How
To
Switch
from
Data
to
Voice
Communication
4-7 DISCONNECTING
4-7
MODEM
SPEED
4-8
SYNCHRONOUS
OPERATION
4-8
How
To Begin
Synchronous
Operation
4-8
How
To
Leave
Synchronous
Operation
4-8
How
To
Improve Performance
4-8
HOW
TO
RESET
THE
MODEM
vi
4-9
4-9
4-9
4-9
4-9
CONTENTS (continued)
Chapter
4
FRONT
PANEL
OPERATION
(continued)
LEASED-LINE
OPERATION
.
How
To Switch between Synchronous
and
Asynchronous Operation
How
To Select
the
Operating
Speed
How
To Begin Leased-Line
Operation
How
To
End
Leased-Line
Operation
5-1
5-1
-
5-8
5-8
5-8
5-8
5-8
5-8
5-8
5-8
5-9
5-9
5-9
5-10
5-10
5-10
5-10
5-11
5-11
5-11
5-11
5-11
5-11
5-11
5-11
5-12
5-12
5-12
5-12
5-12
5-12
5-13
6-1
6-1
6-1
6-1
6-2
Chapter
5AT
OPERATION
HOW
TO
BEGIN
AT
OPERATION
THE
AT
COMlVlANDS
THE
COMlVlAND
LINE
STORING
OPTION SETIINGS
IN
MEMORY
How
To
Save
aSetting
in
Permanent
Memory
How
To
Reset
All
Settings
to
the
Settings
in
Permanent Memory
How
To Reset
All
Settings
to
Their Default
Values
How
To
Save
All
Default
Option
Settings
in
Permanent
Memory
STORING
TELEPHONE
NUMBERS
IN
MEMORY
How
To Store aTelephone
Number
DIALING
WITH
AT
CO~S
How
To
Dial aTelephone
Number
How
To Dial
the
Number
Stored
in
Memory
OPTIONAL
DIALING
FUNCrIONS
How
ToDial Tandem
Numbers
How
To Blind Dial
How
To
Tone Dial
and
Pulse
Dial
How
To Redial
How
To Repeat
the
Last
Command
Executed
How
To Dial
Manually
AUTO-ANSWERING
DISCONNECT
COMlVlANDS
When
the
Mcxlem
Disconnects
from
the
Telephone Line
How
To
Stop
Transmitting
How
To Disconnect
from
the
Telephone
Line
S
REGISTERS
How
To Display
an
SRegister
Value
How
To Change
an
SRegister
Value
How
To Store
an
SRegister
Value
in
Memory
How
To Reset SRegister
Values
Bit-Mapped SRegisters
SREGISTER
DESCRIPTIONS
Chapter
6
TROUBLESHOOTING
POSSIBLE
MODEM
PROBLEMS
AND
SOLUTIONS
The
Modem
Does
Not
Respond
to
Commands
The
Screen Does Not
Display
What
You
Type
The
Screen Displays
Double
Characters
Your
Mcxlem
Is Off-Line, but Your Communications Program
Functions As
If
the
Modem
Is
On-Line
vii
CONTENTS (continued)
Chapter 6TROUBLESHOOTING (continued)
6-2 The Screen Displays Unusual Characters
or
the Modem Locks Up
6-2 Character Echo
Delay
.
6-2 The Modem Does Not AnswerIncoming Calls
6-2 The Modem
Will
Not Dial
6-2 You
Can
Dial aNumber, but Cannot Communicate Properly
6-3 The Modem Answers Calls Intermittently inAsychronous Operation
Chapter 7TESTING
7-1 TESTPROCEDURES
7-1 Before You Run aTest
7-3 AUTOMATIC SELF-TEST
7-4 ANALOO LOOPBACK SELF-TEST
7-4
Procedure
7-5 ANALOO LOOPBACKTEST
7
-5
Procedure
7-6 END-TO-END SELF-TEST
7
-6
Procedure
7-7 LOCAL DIGITAL LOOPBACK TEST (300 BPS)
.7-7
Procedure
7-8 REMOTE DIGITAL LOOPBACK SELF-TEST (1200 BPS)
7-8
Procedure
7-9 REMOTE DIGITAL LOOPBACKTEST (1200 BPS)
7
-9
Procedure
Appendix AEQUIPMENT CONNECTIONS
Appendix BMODEM OPERATION
B-1
9600
BPS OPERATIQN
B-1 Dynamic Duplex
B-1 ErrorControl
B-1 Dynamic FallbackIFallforward
B-2 FLOWCONTROL
B-2 Out-of-Band Flow Control
B-2 In-Band Flow Control
B-4 STATISTICS
B-4 Last Call Statistics
B-7 Summary Statistics
B-7 Reset
Appendix CSPECIFICATIONS
viii
FIGURES
2-1
Contents ofthe Shipping Carton (Figure 2-1)
2-2 Modem Rear Panel (Figure 2-2)
..
2-
3The Front Panel Lights (Figure
2-3)
3-3 Sample Memory Location Display (Figure 3-1)
3-13 Option Setting Table Display (Figure
3-2)
3-21 Commands Display (Figure 3-3)
4-1
Front Panel (Figure 4-1)
7-2 Test Sequence with aRemote Operator (Figure 7-1)
7-2 Test Sequence without aRemote Operator (Figure 7-2)
7-4 Analog Loopback Self-Test (Figure 7-3)
7-5 Analog Loopback Test (Figure 7-4)
7-6 End-To-End Self-Test (Figure 7-5)
7-7 Local Digital Loopback Test (Figure 7-6)
7-8 Remote Digital Loopback Self-Test (Figure 7-7)
7-9 Remote Digital Loopback Test (Figure 7-8)
B-4 Last Call Statistics Display (Figure B-1)
B-7
Summary Statistics Display (Figure B-2)
TABLES·
3-12 Standard Option Settings (Table 3-1)
3-16 Response Messages (Table 3-2)
5-4 AT Response Messages (Table 5-1)
A-I Terminal-to-Modem Interface (RS-232-C) Signals (Table A-I)
A-2
Telephone Jack Pin Assignments (Table
A-2)
ix
FCC PART 68: REQUIREMENTS FOR
END
USERS
Racal-
V
adic
9600VP
Modem
Type of Service
Your 9600VP modem can be used
on
standard telephone lines. The 9600VP connects
to
the telephone line with astandard USOC RIIIC, RI4IS, orRJ45S jack. Connection to
pay telephones is prohibited. Connection to
p~
lines service is subject
to
state tariffs.
Telephone Company Procedures
The telephone company
may
occasionally
make
changes
in
their equipment, operations, or
procedures. They will give you prior notice inwriting, so you can make any necessary
changes to maintain unintenupted service.
If
you have any questions about your telephone
line, call
the
telephone company.
In
cenain circumstances,
the
telephone company
may
request information concerning the
equipment which you have connected to your telephone line. Upon their request, provide
the FCC registration number and
the
ringer equivalence number (REN)
of
the modem.
Both ofthese items are listedon
the
equipment label. The sum
of
all
of
the RENs on your
telephone line should
be
less than five to assure proPer service from the telephone
company.
In
some cases,
an
REN sum
of
five
may
not be usable on agiven line.
When the modem is enclosed
in
acabinet, alabel listing the unit's registration number and
ringerequivalence number must
be
visible from
the
outside
of
the cabinetorother
enclosure,
in
addition
to
the label required
on
the
registered device itself. Additionally,
OEMs must provide end users
of
their equipment with
the
attached warnings.
If
Problems Arise
If
your telephone equipmentis not operating properly, immediately remove it from your
telephone line,
as
itmay cause harm
to
the
telephone network.
If
the telephone company
notes aproblem, they may temporarily discontinue service. When you are notified, you
will
be
given the opportunity
to
correct
the
problem and informed
of
your right to
file
a
complaintwith the
FCC.
All
repairs on your9600VP modem should be performed
by
Racal~
Vadic oran authorized
representative
of
Racal-
Vadic.
Forinformation contact:
Racal-Vadic CustomerService
222 Caspian Drive
Sunnyvale, CA 94089
x
FCC PART 15: RADIO/TV INTERFERENCE
This equipmentgenerates and uses
~o
frequency
energy
and,
if
not installed and used
properly
(in
strict accordance
with
the
manufacturer's instructions),
may
cause interference
to radio
and
television reception. It
has
been
type-tested and found
to
comply
with
the
limits for aClass Bcomputing device
in
accordance
with
the
specifications in Subpart Jof
Part 15
of
the FCC Rules, which
are
designed
to
provide reasonable protection against
interference in aresidential installation.
If
this equipment does cause interference
to
radio
ortelevision reception, which can
be
determined
by
turning the equipment on and off, try
to
COITeCt
the interference by one or
more
of
the
following measures:
•Reorient
the
receiving'antenna
•Relocate the modem with respect
to
the
receiver
•Move the modem
away
from
the receiver
•Plug
the
modem into adifferent outlet
so
that
modem
and receiver
are
on different
branch circuits.
Ifnecessary, consult
the
dealer or
an
experienced radio/television technician for additional
suggestions.
You
might find the following booklet
prepared
by
the Federal
Communications Commission helpful:
"How
to Identify and Resolve RadiotrV Interference Problems"
This booklet is available from
the
U.S.
Government Printing Office, Washington,
D.C.
20402, Stock No. 004-000-00345-4.
xi
CANADIAN DEPARTMENT OF COMMUNICATIONS
REQUIREMENTS
FOR
END USERS
Racal-
V
adic
Mode19600VP
The Canadian Departrilent
of
Communications label identifies certified equipment. This
certification means that
the
equipment
meets
certain telecommunications network
requirements. The Department does not guarantee
the
equipment will operate
to
the user's
satisfaction.
Before installing
this
equipment,
userS
should ensure that connection to the line
is
allowed
by
the local telecommunications company.
The
equipment must
also
be
installed using
an
acceptable method
of
connection. In some cases, the company's inside wiring associated
with asingle line individual service
may
be
extended
by
means
of
atelephone extension
cord Compliance with the above conditions
may
not prevent degradation
of
service in
certain situations.
Equipmentrepairs
shQuld
be
made
by
an
authorized
Canadian
maintenance facility
designated by
the
supplier.
Any
repairs oralterations made
by
the
user, may cause
the
telecommunications company
to
request disconnection.
The electrical ground connections of
the
power utility, telephone lines, and internal metallic
water pipe system,
if
present, should
be
cOlUlected
together. This precaution may
be
particularly importantin roral areas.
The Load Number (LN) assigned
to
each terminal device indicates the total load percentage
that can
be
connected
to
atelephone
loop.
The termination
on
aloop may consist
of
any
combination ofdevices. However, the total LN
of
all the devices must notexceed 100.
The load number, Canadian certification
number,
and
DOC
connectorcodes
are
listed
on
the modem label. For internal
modems
where
the
agency
information label cannot
be
seen
when the modem is installed, asecond
agency
label will be provided. The customer must
attach the label
to
the
exteriorof
the
cabinet
where
the
modem is installed.
Repairs
Inquiries regarding Canadian repair centers should
be
addressed
to:
Racal-Vadic CustomerService
222 Caspian Drive
Sunnyvale, CA 94089
USA
xii
or Canadian General Electric
396 Attwell Drive
Rexdale
Ontario
M9
W5
C3
Canada
Chapter 1
INTRODUCTION
PRODUCT DESCRIPTION
The 9600VP is ahigh-speed, dial-up
modem
for asynchronous and synchronous
communications. It is compatible
with
Bell
212A,
Bell
103,
CCITI
V.29,
and Racal-Vadic
Dynannc
Duplex
modems.
The
modem
transmits
data error-free with Superset Microcom
Networking Protocol (MNP) errorcontrol. It is compatible with Hayes AT and Racal-V
adic
auto-dialers.
In
9600
bps
asynchronous operation,
the
modem
operates asymmetrically to emulate
9600
bps
full-duplex performance.
Racal-
Vadic's
Dynamic
Duplex protocol switches between a
low-spe~
full-duplex data channel for interactive communication (such
as
full-screen
editing) and a9600
bps
half-duplex data channel during rue transfers.
The 9600VP fits under atelephone or
on
a
desk.
It
has
front panel keys (membrane
switches),
an
LED
display, atelephone line jack, and apower cable jack. You can dial
telephone numbers from the terminal keyboard,
the
modem's
front panel, orfrom a
telephone connected
to
the
modem.
Alithium battery backs
up
the modem's
memory
oftelephone numbers and options. It
lasts for
up
to
two
years without
power.
As
long
as
the
modem is turned on, the battery
does
not
discharge. Itretains a
safe
charge level for
up
to
ten years with the power
on.
Racal-Vadic occasionally
adds
new
features
to
the
9600VP
modem.
To add these
new
features,
you
can upgrade your
EPROM.
If
you
want Racal-Vadic to contact you when a
new
EPROM
is available, send your
name,
address, and telephone number to:
9600VP
EPROM
Racal-
Vadic
1525
McCarthy
Blvd.
Milpitas,
CA
95035
9600VP
10/87 Introduction
1-1
FEATURES
•Compatible with a
wide
range oflow-speed
modems
and
communications software
•Compatible with
the
expanded
AT
command
set
(Racal-
Vadic's ATPlus)
•Compatible with standard communications protocols for full-duplex
1200
and 300
bps
operation (Bell
212A
and Bell
103)
and synchronous, half-duplex 9600, 7200, and
4800 operation (V.29 2-wire)
•Adjusts speed inresponse
to
line quality for
maximum
data throughput
•Asynchronous operation at 9600,
1200,
and 300
bps
•Synchronous operation at 9600, 7200, 4800, and 1200
bps
•Superset
MNP
error control ensures error-free data
•Retransmits only bad data
frames
•Built-in tests forrapid problem identification
•Automatic
speed
conversion
•Five types offlow control
•Auto-dial and auto-answer
•Front panel dialing
•Stores
15
numbers
in
memory
for
automatic
dialing
•Dials
an
alternative number
if
the
first
number
does
not
answer
• A battery sustains the
modem's
memory
when
the
power is off
•Includes acable for permissive
connection
to
the
telephone line
•Your telephone and
modem
can
share
one
telephone
line
CONVENTIONS
In
this
manual,
the
symbols <>
mean
to
press
the
indicated key on your keyboard or
modem.
<RETURN> means
to
press
the
return
key.
<CTRL> means to press the control
key.
Hold down the control
key
while
you
press the keys following <CTRL>. For
example,
the
command sequence
<CTRL>
CDmeans to hold down the control key
while
you
press
C,
then
D;
then release both
keys.
9600VP
1-2
Introduction
10/87
Chapter
2
INST
ALLATION
UNPACK
YOUR
9600VP
Remove the modem, power supply, and telephone cordfrom the
canon
andinspect
them..
If
any item has been damaged, return it to yourdealer.
96OCJVP.OOIA
Figure
2·1:
Contents
of
the
Shipping
Carton
MODEM
CONNECTIONS
Connect
the
Modem
to
Your
Computer
or
Terminal
Connectyourmodem to yourcomputer'
or
terminal with an RS-232-C cable compatible
with yourequipment.
Racal-
Vadic does notprovide an RS-232-ecable because different
equipmentrequires differentcables. Synchronous applicationsrequire pins 1through 8,
15, 17, and 20. Asynchronous applications
require
pins 1through 8and 20. Appendix A
gives RS-232-C information.
Connect
the
Modem
to
the
Telephone
Line
Permissive
connection-Plug
one
end
of
the telephone cable into the telephone
wall
jackand the other
end
into the modem's TELCOjack. See Figure
2-2
NOTE: Do not
COlUU!ct
the
telephone cable
to
the modem TELSErjack. Do not connect
the modem to the telephone line through anotherpiece
of
equipment, such as an answering
17IQChine.
Programmable
connection-Have
the telephone company install adata-quality
telephone line andaprogrammablejack. Purchase aprogrammable telephone line cable
(Raca1-Vadic partnumber lS048-0(3). Plug one end
of
the telephone cable into the
programmable line walljackand the otherendintothe modem's TELCOjack.
9600VP
10/87
Installation
2-1
Terminal
or Computer
Power
Supply
Telephone
Line
Telephone
(optional)
\
~
/J
,\
TELSET
1B.CO
_I
[£j~
,I,
:'/'
I,
[1][1]
DTE
<9\
••••••••••••••
/<9
t~
•••••••••••••
~
\J
Figure 2-2. Modem Rear Panel
Leased-Line Operation
The9600VPcan operate synchronously
or
asynchronously
on
a2-wireleasedline
or
a4-
wire leased line with a2-wire-t0-4-wire
converter.
Aleased line is aspecial, point-to-point
connection for aspecific purpose,
such
as
connecting aremote terminal
to
its host
computer. Leased-line
modems
are
usually
inconstant operation and
are
rarely
turned
off.
Most users install them inpairs, and set
one
to
originate and one
to
answer.
When
powered
up,
the
modems
try
to
handshake
according
to
their preset operating conditions
(originate
or
answer; asynchronous orsynchronous; 9600,
7200,4800,
or
1200 bps).
Connect the Modem to tbe Electrical Outlet
Plug the power supply into
the
modem's
PWR
socket. (See Figure 2-2.)
CAUTION
If
you
connect
the
modem
to
the
ac
power
source
with
an
extension cord,
make
sure
the
cord
has
agrounded plug.
9600VP
2-2 Installation
10/87
Plug
the
power supply.into a
110
V
ac,
60
Hz
receptacle. The front panel lights should
look like Figure 2-3.
EC
TXO
RXO
HS CTS DSR
OTR
RI
CXR
r::J
CJ
CJ CJ
•
CJ
•
CJ CJ
ON
•
OFF
CJ
Figure 2-3. The Front Panel Lights
Ifthe ers and DTR lights do not come on, pins 4and
20
are probably missing from the
RS-232-C cable. Use acable with pins 4and
20.
Connect an Optional Telephone to the Modem
With
an
optional telephone connected
to
the
modem,
you can place voice calls, dial and
answer manually, and switch between voice and data communications. Plug the telephone
cord into the modem TELSETjack. (See Figure 2-2.)
9600VP
10/87
Installation
2-3
CONFIGURE THE MODEM
The
96OOVP,
the
computer or
terminal
(also called
Data
Terminal Equipment, or
DTE),
and
the
communications software
can
only
work
together
if
they
respond correctly
to
each
other's signals. Modem options let
you
control
how
the modem responds
to
various
signals. The modem's default settings
are
compatible
with
many
common computers and
terminals, but communications software options normally need some changes. Before
operating
the
modem,
check
the
following
options
and
configure them
to
match your
DTE's
requirements. (Chapter 3explains
how
to
change options. Appendix Aexplains
telecommunication equipment connections
and
signals.
Appendix Bexplains basic
telecommunications principles.)
DSR and CXR Control
Some
terminals
can
communicate
with
the
modem
only
when
the
Carrier
(CXR)
and Data
Set Ready
(DSR)
signals are
ON
at
the
RS-232-C
interface. Most software packages
requires
CXR
to
be
OFF.
Some
answering
modems
disconnect prematurely unless
CXR
is
OFF.
Racal-Vadic options 2
and
3control
the
DSR
and
CXR
signals. Configure these
options
to
be
compatible with your
system
requirements.
In
the
default setting, Computer
Systems
InteIface (CSI),
the
modem forces DSR and
CXR
ON
at
the
RS-232-C inteIface.
Use
this setting
with
terminals that require DSR and
CXR
to
be
ON.
When
the
modem responds
to
an
incoming call or
an
auto-dialing command,
the
CSI
option turns CXR OFF until itdetects
true
Carrier
from
the
remote
modem;
then
it
turns
CXR
ON
again.
When
CXR
goes
OFF,
some
minicomputers drop the Data Terminal
Ready
(OTR)
signal, causing
the
modem
to
hang
up.
If
this happens, change options 2
and 3
to
settings 3and
1,
respectively.
Ifyour communications software
does
not operate properly when
CXR
is
IDOH, enter
terminal emulation and reset option 3
to
setting
1.
In
AT
operation,
the
default
CXR
and
DSR
signals
are
HIGH.
The command
AT
&C
changes the state
of
CXR,
and the
command
A
T*D
changes
the
state of
DSR.
Terminal Speed
Before you communicate at 9600
bps,
set
the
terminal
speed
(the
speed at which
the
terminal communicates
with
the
modem)
to
9600
bps.
Line Feed After Carriage Return
The Racal-
Vadic
command set
responds
to
acarriage return
(CR)
character, but not to a
carriage
retm1l
followed
by
aline
feed
(LF) character. Set your terminal or computer
to
issue only acarriage return
when
you
press
<RETURN>.
Flow Control
Flow
control protocols let
the
modem
and
DTE
signal each other
to
stop
and start sending
data. Be
sure
to
select atype
of
flow
control compatible
with
your equipment,
the
remote
equipment, and
the
data being sent
Option
17
controls
flow
controL
Appendix B
discusses types
of
flow
control.
9600VP
2-4
Installation
10/87
Speed Conversion
Speedconversion lets your modem accept
data
from the DTE at 9600 bps, and
communicate with amodem at aslower
speed.
Option
18
controls speed conversion. The
default setting is disabled. 'Disable speed conversion for any communications program
(such
as
GEORGE 2.2) thatresets the Universal Asynchronous Receiverrrransmitter
(UART) in response to on-line speed messages.
Speed and Parity
Set your DTE, the remote DTE, and both modems
to
the same speedand parity. Set the
modem flow control to be compatible with the DTE flow
controL
Speed can
be
9600,
1200, or 300 bps. When you issue the commands <CTRL> EorAT, the modem
automatically matches the speed and parity ofthe computer orterminal.
COMMUNICATIONS SOFfWARE
The 9600VP operates with communications software designed for 9600 bps and the Racal-
Vadic orHayes AT command sets.
You
can control
the
modem with software commands
from the latest versions
of
the following communications packages:
•Blast
•Carbon Copy
•Close-Up.
•Crosstalk
•MEX-PC
•Professional-YAM
•Q-modem
•RelayGold
•Respond
Error
Control
The 9600VP has error control, so you do not need error control software. Error control
software slows throughput. Ifyour communications package has error control, change the
datapacket size
to
atleast 3.5 Kb-preferably
14
Kb.
Ifyou can use alarger datapacket,
use amultiple
of
3.5 Kb.
Some errorcontrol protocols (such
as
X!vlODEM
and Kermit) require
an
acknowledgment
of
each datapacket.
This
type
of
protocol is inefficient. The modem works faster and
more efficiently when itdoes not have
to
acknowledge each datapacket, or when the data
packet is 3.5 Kb
or
larger.
AT-Compatible Software
Use this procedure for any communications software compatible with the AT command set.
Refer to the software manual for specific instructions. When you transfer binary files, use a
file-transfer protocol (such as Crosstalk's
XMlT)
that
will
transmit alarge number
of
data
packets without
an
acknowledgment from the receiver. Do not use aprotocol such as
X!vlODEM
orKERMIT for transferring binary files, unless you can accept alow throughput
9600VP
10/87
Installation
2-5
1. From the software, set the terminal speed
to
9600
bps.
2.
Enter terminal emulation inyour
software
program.
3. Type
AT
&Cl <RETURN>
to
set
CXR
for
normal
oPeration
in
the modem.
4.
Type
A~F2
<RETURN> to set RTS/CfS
flow
control
in
the modem.
(Be
sure
that the software supports RTS/CfS
flow
control.)
5. Type
AT
&Wto make these settings
the
default settings.
6. Set the software for RTS/CfS
flow
control
7. Set the file transfer protocol
to
its largest block
size.
Software Packages
Racal-
Vadic
engineers
have
used several software packages, and offer the following set-up
instructions
to
assist
you.
How To Set Up Crosstalk (Version 3.6
or
Higher)
1.
Change
the speed
and
emulation
settings:
SPeed =
9600
EM:ulate
=
VT100
2. Tum on hardware
flow
control.
The
screen
displays:
~NDSHAKE
=
ON.
3. Change
the
BK setting to equal
255.
If
the
255
setting causes consecutive errors (because
~f
the
data packet time out),
change
the
BK setting to avalue
between
30
and
60.
4.
Change dial and answer command strings
so
that
the
modem options
are
set properly.
The dialing prefix is DP =A
TVOXI
*F2IA
roT.
The answer prefix
is
AP=ATSO=I
*F2.
5.
Type
SAVE
<RETURN>.
6. To set modem
CXR
to
normal
in
the
modem,
type
GO
WCAL
at the command
prompt, then type
AT
<RETURN>.
The screen displays:
OK
Type
AT
&Cl&W
<RETURN>.
The screen displays:
OK
7.
Press <ESC>.
9600VP
2-6
Installation
.10/87
8. Set
the
software on one side
to
answer (MOde=answer) and the software on the other
side to call (MOde=call).
9.
To send afile to the remote
Crosstalk:
software, use the command XM. To request a
file from the remote Crosstalk software,
use
the command
RQ.
Carbon Copy
Use the latestrelease ofCarbon Copy's CCINSTALL.EXE and CCMODEM.EXE
programs from Meridian Technology, Inc. CCMODEM.EXE lets you customize a
definition
of
the 9600VP
to
the CCINSTALL.EXE program. The RESET string in
CCMODEM.EXE should
be:
(set 9600)(Delay 1second)+++(Delay 1second)AT&C1&D2*
F2EOQOVOX4S
0=1*Cl
<RETURN> (Delay 1second)
Close-Up
Use the most recentrelease
of
Close-Up from Norton-Lambert. Initialize both modems
with the Close-Up command string for the 9600VP. The command string should include
AT&Cl&D2*F2S0=1*Cl&Wcommands.
Co-Session
The most recent version
of
Co-Session, Version 3.0, supports the 9600VP.
Reflection Series
This package from Walker, Richer, and Quinnruns on DEC and H-P minicomputers
as
well as personal computers for PC-ta-mini file transfers.
9600VP
10/87
IIistallation
2-7
Table of contents
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