Western Telematic Data/FaxModem Bedienungsanleitung
WTI Part No.: 12548
Rev. F
RMM
Rack Mount Data/Fax Modem
User's Guide
5 Sterling ·Irvine ·California 92618-2517
(949) 586-9950 ·Toll Free: 1-800-854-7226
Fax: (949) 583-9514 ·http://www.wti.com
1. Introduction
The RMM Rack Mount Data/Fax Modem is designed for applications
that require a single “Industrial Strength” modem that easily installs in
equipment bays. The unit requires only 1 rack space, thus eliminating
the hassle of equipment trays and power bricks required for “Plastic
Box” modems.
The heart of the RMM is the popular and highly reliable U.S.
Robotics® Sportster® 28.8 modem card. The power supply is filtered,
fused and surge protected for operation in harsh environments. The
RMM is available in 115/230 (switchable) and 48 volt DC versions.
Features
·Requires Only One 19 Inch Rack Unit.
·High Speed ITU-T V.34+
·Filtered and Surge Protected Power Supply.
·115/220 Volt AC and 48 Volts DC Versions.
Page 1
Figure 1: Front Panel
2. Unit Description
2.1. Front Panel Indicators
LED Status Meaning
AA
(Auto Answer)
On Answer mode only: Modem is answering a call and
DIP Switch 5 is UP (Enable Auto Answer), or
register S0 is set to 1 (Auto Answer, 1 Ring).
Off No activity, or modem is originating a call.
Flash Incoming call.
CD
(Carrier Detect)
On A valid data carrier signal has been received from a
remote modem, and Dip Switch 6 is UP (Normal
Carrier Detect). Modem is ready to transmit data.
The CD Indicator will remain ON constantly if Dip
Switch 6 is DOWN (Carrier Detect Override).
RD
(Receive Data)
Flash Modem is sending result codes or passing received
data bits.
SD
(Send Data)
Flash Computer is sending data bits.
TR
(Data Terminal
Ready)
On Modem is receiving DTR signal from computer. The
TR indicator will only function when Dip Switch 1 is
UP (Normal DTR). Remains ON constantly if Dip
Switch 1 is DOWN (DTR Override).
CS
(Clear to Send)
On Hardware flow control is enabled (&H1, &H3),
modem is waiting for low CTS signal.
Page 2
RMM User’s Guide
3. Operation
The following commands can be used to display current configuration
status and various help menus:
View Modem Setup: ATI4
Basic Help Menu: AT$
Dial Command Help Menu: ATD$
Configuration Command Help Menu: AT&$
List of S-Registers: ATS$
Reset Modem to Default Profile 0: ATZ3
When the View Modem Setup command (ATI4) is invoked, the
RMM will display a status screen as shown below.
Page 3
B0 E1 F1 M1 Q0 V1 X1 Y0
BAUD=9600 PARITY=N WORDLEN=8
DIAL=PULSE ON HOOK
&A1 &B0 &C1 &D2 &G0 &H0 &I0 &K1
&M4 &N0 &P0 &R1 &S0 &T5 &Y1
S00=001 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002
S07=060 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000
S14=000 S15=000 S16=000 S17=000 S18=000 S19=000 S20=000
S21=010 S22=017 S23=019 S24=000 S25=005 S26=000 S27=000
S28=008 S29=020 S30=000 S31=000 S32=000 S33=000 S34=006
S35=000 S36=014 S37=000 S38=000 S44=015 S51=000
Figure 2: The Status Screen (Defaults Shown)
4. Installation
4.1. 48 Volt DC Power Option
The 48 Volt DC input is not polarity sensitive. Therefore, you can
connect either positive or negative wires from your 48 volt power
source to either input and the internal circuitry will adjust for the proper
polarity.
Input Range: 40 - 60 Volts DC, 200 milliamps maximum.
Page 4
RMM User’s Guide
Figure 3: 48 Volt DC Power Option
4.2. Dip Switch Settings
Switch Factory
Setting Function
1Data Terminal Ready (DTR) Override
lUP Normal DTR operations: Computer must
provide DTR signal for modem to accept
commands. Dropping DTR terminates call.
DOWN DTR Override: Modem ignores DTR
2Verbal/Numeric Result Codes
lUP Verbal (Word) Results
DOWN Numeric Results
3Result Code Display
UP Suppress Result Codes
lDOWN Display Result Codes
4Command Mode Local Echo Suppression
lUP Enable Echo
DOWN Suppress Echo
5Auto Answer Suppression
lUP Auto Answer On: Modem answers on first
ring, or higher if specified in NVRAM
DOWN Auto Answer Off: Disable auto answer
6Carrier Detect (CD) Override
lUP Normal: Modem sends CD signal when
connecting with another modem, drops CD on
disconnect
DOWN Override: CD always ON
7Power-On and ATZ Reset Software Defaults
UP User Defaults: Load Y or Y1 configuration
from user-defined nonvolatile memory
(NVRAM).
lDOWN Factory Defaults; Load &F0 (Generic)
template from read-only memory (ROM).
8AT Command Set Recognition
UP Dumb Mode: Disables command recognition
lDOWN Smart Mode: Enables command recognition
Page 5
Installation
Page 6
RMM User’s Guide
5. Command Summary
·Type commands in either upper or lower case. Do not use a
combination of upper and lower case characters.
·Use the Backspace key to delete errors. Note that the original AT
command is stored in the modem buffer, and cannot be deleted.
·Some commands have numeric options. If these commands are
invoked without a numeric option, the modem will assume option
0 (zero). For example, when the command ATB is invoked, the
modem will assume command ATB0 was intended.
·All commands begin with the AT prefix, and are invoked by
pressing [Enter] (Carriage Return). The only exceptions are the
A/ command (Repeat previous command) and +++ (Exit to on-
line command mode).
·The maximum command length is 40 characters. This does not
include the AT prefix, Carriage Returns, or spaces.
Note:
•All defaults are based on the &F1-Hardware Flow
Control template loaded in NVRAM.
•Defaults are marked with an asterisk (*).
Command Function/Options
$ Displays basic command list (On-line Help Menu).
A Manual Answer: goes off hook in answer mode.
Pressing any key aborts the operation.
A/ Re-executes the last issued command. Used mainly
to redial. Does not require the AT prefix or a
Carriage Return.
Any key Aborts off-hook dial/answer operation and hangs up.
AT Required prefix for all modem commands. Can also
be used to test for the “OK” result code.
Not required for the A/ command or +++ command.
BnU.S./ ITU-T answer sequence
* B0 ITU-T answer sequence
B1 U.S. answer tone
Page 7
Installation
Command Function/Options
DnDials the specified phone number.
Can also include the following command options:
L Re-dials last number dialed
* P Pulse (Rotary) Dial Mode
R Originates call using answer (reverse)
frequencies.
SnDials phone number string stored in NVRAM
at position n(n= 0-3). Phone numbers are
stored with the &Zn=s command.
T Tone Dial Mode
, (Comma) Two Second Pause. Comma
pause duration can be redefined via the
S8 Register.
; (Semicolon) Return to Command mode
after dialing
“ Dials the letters that follow (in an
alphabetic phone number)
! (Exclamation point) Flashes the
switch hook
/ Delays for 125 msec before proceeding
with dial string
W Wait for second dial tone (X3 or higher).
Linked to S6 register
@ Dials, waits for 5 seconds of silence
after detecting ringbacks, and then
continues (X2 or X4).
$ Displays a list of dial commands.
EnSets local echo. See DIP Switch 4 (Section 4.2).
E0 Echo OFF
* E1 Modem displays keyboard commands
FnSets online local echo of transmitted data ON/OFF.
F0 Local echo ON. Modem sends a copy of
data it sends to the remote system to
your screen.
* F1 Local echo OFF. Receiving system may
send a remote echo of data it receives.
HnControls ON/OFF hook.
H0 Hangs up (goes on hook)
H1 Goes off hook
Page 8
RMM User’s Guide
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