INDEX
                                              
      
            Alphabetic Command List
 Bold-faced page numbers indicate the primary
       information source for an entry.
   +++, return to
 Command mode, 4-7,
  6-8O6-9, C-1, C-6
   +FCLASS=n, fax
     modems, E-1
+FCLASS?, fax modems,
         E-1
 /, pause, 6-5, C-6
  $, basic command
help, 7-4, C-2, C-4,
         C-6
&$, ampersand command
 help, 7-4O7-5, C-6
&A, enable ARQ result
 codes, 5-8O5-9, C-6
&B, serial port rate,
 3-2O3-7, 4-13O4-14,
         C-7
  &F, load factory
settings, 4-2, 5-2O5-
       3, C-7
&G, Guard tone, 6-12,
         C-7
  &H, Transmit Data
 flow control, 3-2,
3-5O3-7, 4-8O4-9, C-
          7
  &I, Received Data
    software flow
      control,
    4-9O4-11, C-7
&K, Data compression,
   3-8, 4-11O4-12,
  A-2OA-3, A-6, C-8
&M, error control, 3-
6O3-7, 4-4O4-5, 6-3,
         C-8
&N, connection rate,
   4-12O4-15, C-8
&P, make/break ratio,
   6-12O6-13, C-9
  &R, Received Data
    hardware flow
      control,
    4-9O4-10, C-9
&S, Data Set Ready, 4-
       15, C-9
  &T, test options,
     App. F, C-9
&W, write to NVRAM, 3-
   9, 5-1O5-2, C-9
&Y, break handling, 4-
    15O4-16, C-10
&Zs, write number to
   NVRAM, 5-3O5-4,
        C-10
 &Z?, display phone
number in NVRAM, 7-3
        C-10
A, force answer mode,
      C-1, E-4
   A/, repeat last
command, 6-3, 6-8, C-
          1
 Any key, terminate
current operation, 2-
         9,
    6-3, 6-4, C-1
AT, attention command
 prefix, 2-7O2-9, 3-
         2,
       C-1, C-2
B, handshake options,
   4-4, 6-12, C-2
D, dial, 2-9, 3-10, 6-
     3O6-7, C-2
   $, dial command
   help, 7-4, C-2
   @, wait for an
 answer, 5-6O5-7, 6-
       6, C-2
, (comma), pause, 6-
       5, C-2
  / (slash), short
   pause, 6-5, C-6
   ; (semicolon),
  return to Command
        mode,
       6-6, C-2
 " (quotation mark),
 dial letters, 6-6,
         C-2
   ! (exclamation
  point), transfer
     call, 6-6,
         C-2
 P, pulse dial, 6-4,
         C-2
     R, reverse
  frequencies, 6-7,
         C-2
 T, Touch-Tone dial,
   3-10, 6-4, C-2
 W, wait for second
  dial tone, 5-6O5-
       7, 6-5,
         C-2
   DS, dial number
 stored in NVRAM, 6-
         7,
         C-2
E, Command mode local
 echo, 5-9O5-10, C-2
F, online local echo,
 5-9O5-10, C-3, D-4
   H, on/off hook
  control, 6-9, C-3
I, inquiry options, 7-
     1O7-3, C-3
M, speaker control, 5-
       11, C-3
O, return online, 6-
     9O6-10, C-4
P, pulse dial, 6-4, C-
       2, C-4
Q, quiet mode, 5-5, C-
       4, D-2
S$, S-Register help,
      7-6, C-4
   Sr?, S-Register
query, 7-3, B-9, C-4
Sr=n, set S-Register
   value, B-9, C-4
T, tone dial, 6-4, C-
       2, C-4
  V, verbal/numeric
 mode, 5-4O5-5, C-4
   X, result code
options, 5-5O5-7, 6-
     5, C-5OC-6
  Z, reset to NVRAM
 settings, 5-3, C-6
                       
                       A
Adaptive dialing, 5-6O5-7, 6-5
Additional result code subsets, 5-8O5-9
Analog loopback (AL, &T), App. F
Answer mode
 auto answer, 6-10O6-11
 DIP switch 5, 6-10, B-5, B-9
 force, see A, page Index-1
ARQ (Automatic Repeat Request)
 CONNECT result codes, 5-8O5-9
 definition, 4-1, A-1
 during testing, App. F
 flow control requirement, 3-5, 4-6,
  4-8O4-9, A-4OA-5
 mode select, see &M, page Index-1
 timeout, retransmit maximum, 4-5, A-5
 with Auto Answer, 4-5
ASCII
 changing definitions, 4-7, B-8, B-9OB-10,
  B-13
 chart, B-16
Asterisk, dialing (*), 6-3, 6-4
Audio monitor (speaker), 5-10O5-11
 volume control, see M, page Index-1
Auto answering, 6-10O6-11
 disabling, 6-11, B-5, B-9
 number of rings on which to answer (S0),
  B-9
 with DIP switch 5, 6-10, B-5, B-9
 with error control, 4-5
Auto Baud Detect, 3-4O3-5, 4-13O4-14
Automatic Repeat Request, see ARQ

                       B
Backspace key, ASCII definition (S5), B-10
Baud rate, 2-6
Bits per second (bps)
 link negotiation, 1-1O1-2, 3-3, 4-14O4-15
 online fallback, 4-5, A-5
 rate recognition, 4-12O4-15, E-2OE-4
 setting the, 6-1O6-2
Break handling, see &Y, page Index-1
Break length (S21), B-12
Buffers
 command, 3-10, 6-8
 flow control, 4-6
Busy answer, 6-8
BUSY message, 5-6, 5-7

                       C
Calling another modem, 3-8O3-9, 6-1O6-9
 at another extension, 6-6
 at a fixed connection rate, 4-14O4-15
 overseas, see International calls
Call progress messages, 5-4O5-8, E-2OE-4
Call waiting (S10), B-10
Canadian certification (DOC), H-2, H-4
Carrier, defined, 5-10
Carrier Detect (CD) override (DIP switch 6),
B-1, B-5, D-2
CCITT
 answer tone (B, V.32), 6-10O6-11
 V.21, 1-3, 6-1, 6-13, B-8, B-13, B-15
 V.22, 1-3, 6-1
 V.22 bis, 1-3, 6-1, 6-10
 V.23, 1-3, 6-1, 6-13, B-15
 V.25, 1-3, 6-1, 6-12
 V.27 ter, 1-3
 V.29, 1-3
 V.32, 1-3, 4-4, 6-1, B-13
 V.32 bis, 1-3, 4-4, 4-5, 6-1, 6-13, A-5, B-
  15, D-2
 V.42, 1-1, 1-3, 4-4O4-5, 6-1, A-1OA-2, B-14
 V.42 bis, 1-1, 1-3, 3-8, 6-1, A-2OA-3, A-6
 V.54, 1-3, 6-1, App. F
Characters per second (cps), A-6
 maximum throughput, 4-2O4-4, A-6
Clear to Send (CTS), 2-6, 3-4O3-7, 4-9
Command format, 2-7, 3-1O3-2, 3-9
Command mode local echo, see E,
page Index-1
Communications software, requirements,
2-1, 2-2, 2-6O2-8, 3-1O3-2
Compatibility, 1-3, 6-1
 error control, 4-4O4-5, 6-3, A-1OA-2
Compression, see Data compression
Components, 2-1
Configuration, general
 calling non-MNP modems, 3-8, 6-3
 DIP switches, 2-4, B-4OB-5
 factory defaults, 2-4, 4-2, 5-1O5-3,
  B-6OB-16
 interface controls, 4-1O4-2
 internal controls, Chap. 5
 NVRAM options, 5-1O5-2, B-7
 S-Registers, B-8OB-16
CONNECT messages, 5-6O5-9, E-2OE-4
 ARQ, see &A, page Index-1
Connection rate, 3-3, 4-14O4-15
CRC (Cyclic Redundancy Checking), A-1
CSA approval, 1-3, H-2
CTS, see Clear to Send
Customer service, USRobotics, D-4OD-5,
H-1OH-2

                       D
Data compression, see &K, page Index-1
 binary files, A-2OA-3, A-4, A-6
 MNP5, disabling, 4-12, A-2OA-3, A-4,
  A-6
Data format, 3-8O3-9, 6-2, D-1, D-3
Data rate, 4-12O4-15
 link negotiation, 1-1O1-2, 4-14O4-15,
  A-1OA-3
 online fallback, 4-5, A-5
 standards compatibility, 1-3, 6-1
Data rate select, see &B and &N, page Index-1
Data Set Ready (DSR), see &S, page Index-1
Data Terminal Ready (DTR, DIP switch 1),
2-6, B-3, B-5, B-16
Defaults
 command summary, App. C
 NVRAM/factory, B-7, B-8
 NVRAM S-Register options, B-8OB-16
 setting, 5-1O5-3, B-9
Department of Communication (DOC), 1-3,
H-2, H-3OH-4
Detection phase, V.42, A-1OA-2
Diagnostics, see Testing
Dial, auto
 commands, functions, see D, page Index-1
 stored phone number, see DS, page
  Index-1
Dial test (S16), B-12, F-8
Dialing type
 adaptive, 5-6, 5-7, 6-5
 pulse/tone, 3-10, 6-4
DIP switches, 2-4, B-4OB-5
 auto answer, 6-10O6-11
 CD override, 2-6, B-1, B-5, D-2
 command set recognition, B-5, D-1
 load options, 5-1O5-3
 local echo, 2-8, 5-9O5-10, B-5
 result code display 5-5, D-2
Disconnecting (H, +++), 6-8O6-9
DOC, see Department of Communication
DSR (&S), see Data Set Ready
DTR, see Data Terminal Ready
Dumb mode (DIP switch 8), 2-8, B-5
Duplex, Half/Full, 5-10
                       
                       E
Echo, local, see E, page Index-1
Echo, online, see F, page Index-1
Error control, see ARQ
Error control, using, 4-4O4-5, 6-3
ERROR message, 5-6, 5-7
Escape code (+++), 4-7, 6-8O6-9
 changing ASCII definition (S2), B-9
 to terminate testing, F-3
Extended result code set, 5-6, 5-7
Extensions, transferring calls to, see !,
page Index-1
                       
                       F
Factory settings, 2-4, 4-2, 5-1O5-3, B-6OB-7
Fallback, data rate
 link negotiation, 1-1O1-2, 4-14O4-15,
  A-1OA-3
 online, 4-5, A-5
Fax mode, 2-3, B-1, E-1
Fax modems
 commands, E-1
 compatibility, 1-4
 LED, 2-3, B-1
FCC certification, 1-3, H-2
File transfer
 compressed files, 4-11O4-12, A-3OA-4
 protocols, 4-3O4-4, A-4OA-5
Fixed/variable data rates, 4-12O4-15
Flow control, 1-1, 3-2, 3-4O3-8, 4-6O4-11, A-3
Full duplex, 5-10
                       
                       G
Guard tone, see &G, page Index-1
                       
                       H
Half duplex, 5-10
Handshaking, 4-4, 6-3, A-1OA-2
Hanging up (H, +++), 6-8O6-9
Hardware switches, see DIP switches
Help screens, 1-2, 7-3O7-6
                       
                       I
Inactivity timer (S19), 1-2, B-13
Inquiry options, see I, page Index-1
Installation, 2-4O2-6
International calls, 6-12O6-13
 CCITT answer sequence, see B, page
  Index-1
 Guard tone, see &G, page Index-1
 Pulse dial make/break ratio, see &P,
  page Index-1
 V.21 (S27), 1-3, 6-1, 6-13, B-13OB-14
 V.23 (S34), 1-3, 6-1, 6-13, B-15
                       
                       K
Kermit protocol, 4-3, A-4
                       
                       L
LAPM (V.42), 1-1, 4-4O4-5, 4-10, A-1OA-2
Line feed, ASCII definition (S4), B-8, B-9
Link rate negotiation, 1-1O1-2, 4-14O4-15,
A-1OA-3
Load number, DOC, H-4
Local echo, see E, page Index-1
Loopback tests, App. F
                       
                       M
Manual, how to use, iiOiii
Memory, modem
 nonvolatile random access (NVRAM),
  1-1, 5-1O5-3, 7-2, B-6OB-8
 random access (RAM), 7-1
 read only (ROM), 7-1
MNP, Microcom Networking Protocol
 error control, 1-1, 4-4O4-5, 6-3, A-1OA-2
 data compression, 1-1, 4-11O4-12,
  A-2OA-3, A-6
 disabling, 3-7O3-8, 4-11O4-12, A-2OA-4,
  B-12
Modem
 defaults, App. B, App. C
 installation, 2-4O2-6
 problems and solutions, App. D
 repair, D-4OD-5, H-1OH-2
 testing, App. F
Modulation, 1-3, 4-4, 6-1, 6-12O6-13,
A-1OA-4, B-13, B-14, B-15
                       
                       N
NO ANSWER result, 5-6, 5-7
NO CARRIER result, 5-6, 5-7, 5-10, 6-9O6-11
NO DIAL TONE result, 5-6, 5-7
Nonvolatile random access memory (NVRAM)
 configuring, 5-1O5-4, B-6OB-8
 defined, 1-1, 5-1
 DIP switch 7, 2-4, 3-7, 5-1, B-5, B-6
 options, B-6OB-16
 resetting to, see Z, page Index-1
 storing phone numbers in, see &Zs, page
  Index-1
 writing to, see &W, page Index-1
                       
                       O
OK message, 2-7, 5-6, 5-7
Online local echo, see F, page Index-1
Online fallback, 4-5, A-5
Operations
 auto answer, 4-5, 6-10O6-11
 error control, 4-4O4-5, 6-3, A-1
 flow control, 4-6O4-11, A-3
 link negotiation, 1-2, 4-14O4-15, A-1OA-3
Originate mode, 6-4, E-2, E-5
Overseas calls, see International calls

                       P
Parity, 2-7, 3-1, 3-8O3-9, 6-2, B-7, D-1OD-3
Party lines, H-3
Pause during dial, see /, page Index-1
Phone company, connecting to, H-2OH-3
Phone jacks
 on Sportster 14,400, 2-6, 2-9
 RJ11C, 2-1, 2-6
Phone line interface, 3-3, 4-14, D-3
 connection rate select, see &N, page
  Index-1
Phone number storage, see &Zs, page Index-1
 inquiry, see &Z?, page Index-1
Placing a call, 3-10, 6-3O6-8
Pound sign, dialing (#), 6-3, 6-4
Problems and solutions, App. D
Protocol
 file transfer (Kermit, Xmodem, etc.),
  4-3O4-4, A-4OA-5, A-6
Pulse dialing, see P, page Index-1
                       
                       Q
Quiet mode, see Q, page Index-1
Quote mode, see ", page Index-1

                       R
Radio/television interference, H-3
RAM, random access memory, 7-1
Rate select commands
 serial port rate, see &B, page Index-1
 connection rate, see &N, page Index-1
Received Data flow control, see &I and &R,
page Index-1
Redial one time, see A/, page Index-1
Remote digital loopback, App. F
Request to send (RTS), 4-10, B-7
Reset to NVRAM defaults, see Z, page
Index-1
Result code sets, 5-4O5-9
Retrain sequence, 6-9O6-10, B-14, E-2OE-4
Retransmission, 4-1, A-5
RING result code, 5-6, 5-7
RJ11C jack, 2-1, 2-5
RMA (Return Materials Authorization) number, D-
5, H-1OH-2
ROM, read only memory, 7-1
                       
                       S
Serial port
 rate select, see &B, page Index-1
 selecting, 2-7, 3-1
Settings
 changing, 3-1O3-2, 4-2, 5-1O5-3, B-6
 default, 4-2, 5-1O5-3, B-6OB-16
Smart mode (DIP switch 8), 2-8, B-5
Software, 2-2, 2-6O2-8, 3-1O3-2, 3-8O3-9,
4-2O4-4, 4-6O4-8, 4-10O4-11, 4-13, D-1OD-4
Speaker (audio monitor), 5-10O5-11
 volume control, see M, page Index-1
Speed recognition, 4-13O4-14, 6-1O6-2
Speed select
 serial port rate, see &B, page Index-1
 connection rate, see &N, page Index-1
S-Registers, 5-11, B-8OB-16
 inquiries, see Sr?, page Index-1
Standards
 Sportster 14,400 compatibility with, 1-3,
  6-1
Star button, dialing (*), 6-3, 6-4
Start/Stop bits, 2-7, 3-1, 3-8O3-9, 6-2,
D-1OD-3
Store phone number, see &Zs, page Index-1
 inquiry, see &Z?, page Index-1
Switches,
 DIP, 2-4, B-2OB-3
 power, 2-3, 2-6
 volume control, 2-3

                       T
Technical Support, USRobotics, D-4OD-5,
H-1OH-2
Telephone company, connecting to,
H-2OH-3
Television/radio interference, H-3
Terminal (serial port) interface speed select,
see &B, page Index-1
Terminal Mode, 2-7, D-1
Terminology, 4-1, App. G
Test pattern, App. F
Testing,  App. F
 installation, 2-6O2-7
Throughput, 4-2O4-4, 4-12, App. A
Touch-tones
 dialing, 6-4
 timing, spacing (S11), B-11
Transmission rate
 serial port interface, see &B, page Index-1
 phone line interface, see &N, page Index-1
Transmit Data flow control, see &H, page
Index-1
Troubleshooting, 2-8O2-9, App. D

                       U
Unattended operation, 6-10O6-11
United Kingdom requirements, see
International calls
                       
                       V
V.xx, see CCITT
Variable/fixed data rates
 serial port interface, see &B, page Index-1
 phone line interface, see &N, page Index-1
Voice/data communications
 configuring for, 2-6
 using both, E-4
Volume control, speaker, see M, page Index-1
 
                       W
Warranty information, H-1OH-2
Word length, 2-7, 3-1, 3-8O3-9, 6-2, B-7,
D-1OD-3

                       X
Xmodem-type protocols, 3-6O3-7, 4-3O4-4,
4-7O4-8, A-4OA-5
                       
                       Y
Ymodem, 3-6O3-7, 4-3O4-4, A-4OA-5

                       Z
.ZIP file transfer, 4-12, A-3, A-6
Zmodem, 3-6O3-7, 4-3O4-4, A-4OA-5