Telebit WorldBlazer Quick Reference Card
Telebit WorldBlazer Quick Reference Card
You may enter a command line of up to 80 characters in upper or lower case with the first command in the line preceded by an "AT" or "at" and the last command followed by a carriage return.
The notation "(n)" in the descriptions represents a decimal numeric option, and "(x)" represents an assigned
value. The parentheses should not be typed. If a command is typed without a value when one is expected, the modem will assume a
value of 0. The option should immediately follow the command. For example, to turn off the result codes, type Q1 not Q=1.
You can repeat the last command issued by entering A/ or a/. Do not enter an AT prefix before entering A/ and do not press RETURN after entering A/. This command is useful for redialing a telephone number.
On this page:
Result Codes
AT Commands
Registers
Result Codes
The following are the basic result codes returned when the Q command setting is Q0 or Q2 and you have originated a call.
Number Message and Description
0 OK--The command was successfully completed.
1 CONNECT
2 RING--An incoming ring has been detected.
3 NO CARRIER--Time to connect has expired, dial command aborted,
or carrier lost.
4 ERROR--A command error has been encountered.
5 CONNECT 1200--Connected at 1200 bps (Bell 212A or V.22
Compatible).
6 NO DIALTONE--No dial tone was detected.
7 BUSY--Remote connection is busy.
8 NO ANSWER--Five seconds of silence was not detected within 30
seconds when an 
modifier was encountered in the
dialing string.
10 CONNECT 2400
11 CONNECT 4800
12 CONNECT 9600
13 CONNECT 14400
14 CONNECT 19200
15 CONNECT 38400
16 CONNECT 57600
17 CONNECT 76800
18 CONNECT 115200
46 CONNECT 7512
47 CONNECT 1275
48 CONNECT 7200
49 CONNECT 12000
52 RRING--Remote connection is ringing.
53 DIALING
54 NO PROMPTTONE
50 CONNECT FAST
AT Commands
The following briefly describes the AT commands and shows each command’s range and default.
Command Parameter Description Default
A Answer
B(n) 0 or 1 Bell/CCITT Mode Select 0
0 Use CCITT standard
1 Use Bell standard
D(n) 0-9,A-D,*, Dial number Pulse
# S= Reference number in number directory dialing
Modifiers W Wait for dial tone
P Pulse dialing
T Tone dialing
,= Timed wait set by S8
!= Initiate momentary on-hook flash
= Wait for quiet answer
R= Switch to answer mode when remote modem
answers
;= Remain in command mode after dialing
$= Calling and billing prompt
= Reference a number in number
directory
E(n) 0 or 1 Echo Command ON/OFF 1
0 Off
1 On
H(n) 0 or 1 Hook Control 0
0 Hang-up (on-hook)
1 Pick up phone line (off-hook)
I(n) 0 - 5 Information
0 Return product ID code
1 Return diagnostic status
2 Report CONNECT status
3 Model and firmware revision
4 Reserved
5 Last number dialed
L(n) 0 - 3 Speaker Volume 2
0 Low volume
1 Low volume
2 Medium volume
3 High volume
M(n) 0 - 3 Speaker Mode 1
0 Speaker OFF
1 Speaker on while connecting
2 Speaker always on
3 Speaker on after dialing until carrier
detected
O(n) 0 - 2 Return to Data State
0 Modem switches to data state
1 Retrain Equalizer
2 Renegotiate DTE protocol
P Pulse Dialing
Q(n) 0 - 2 Quiet Mode Select 0
0 Modem sends result codes
1 No result codes ae reported
2 Sends result codes when originating.
Does not send result
coded when answering
T Tone Dialing
V(n) 0 or 1 Result Code Format Select 1
0 Return numeric responses. In V.25bis
mode, result codes
are unformatted
1 Return word responses. In V.25bis mode,
result codes are
formatted
X(n) 0 - 2, 4, Result Code Format 2
0 0-4 result codes
11-12 1 Adds modem speed to 0-5, 10-13, 46-50
2 Same as X1, with 6-7, 52, 53
4 Same as X11, with 6,7
11 DTE speed, 05, 10-13, 48, 49
12 Same as X11 with 6,7, 52,53
Y(n) 0 or 1 Long Space Disconnect 0
0 Modem ignores long space
1 Modem disconnects on long space
Z(n) 0 - 1 Reset
0 Reset specified by S255
1 Reset and recall profile B
&C(n) 0 - 6 DCD Control 0
0 DCD signal is on
1 DCD on after connect
2 DCD on/off specified by S47
3 DCD on when data is transmitted to DTE
4 Synchronous use only. DCD on when modem
detects carrier.
Modems sets received data to mark and
drops DCD when
V.13 pattern detected.
5 DCD on when data transmitted to DTE
6 DCD follows DTR when on hook
&D(n) 0 - 4 DTR Interpretation 0
0 Modem ignores DTR
1 DTR on/off to command mode
2 DTR on/off disconnects
3 Modem loads prestored configuration when
DTR signal is
off. DTR on/off disconnects
4 If DTR off, modem is disabled
&F(n) 0-16,29,30 Load Factory Defaults
(see appendix A)
32-34
&G(n) 0 - 2 Guard Tone Selection 0
0 No guard tone
1 550 Hz guard tone
2 1800 Hz guard tone
&J(n) 0 - 2 Jack Type Selection 0
0 Aux telco leads disabled
1 A/A1 control selected
2 MI/MIC control selected
&L(n) 0 or 1 Line Type Selection 0
0 Dial-up line
1 Leased line
&M(n) 0 - 3 Asynchronous/Synchronous 0
0 Equivalent to Q0
1 Equivalent to Q1
2 Equivalent to Q2
3 Equivalent to Q3
&Q(n) 0 - 3, 6 Asynchronous/Synchronous Mode Select 0
0 Asynchronous mode
1 Synchronous mode 1
2 Synchronous mode 2
3 Synchronous mode 3
6 Transparent sync mode
&R(n) 0 - 8 RTS and CTS Interpretation 3
0 CTS on when modem is not connected. CTS
follows RTS
per S26
1 CTS is on after CONNECT
2 CTS follows RTS, fixed delay
3 CTS is on if hardware flow control
disabled
4 CTS follows DTR when modem is not
connected
5 Same as &R0; sends V.13 pattern when RTS
off
6 Same as &R4; sends V.13 pattern when RTS
off
7 CTS follows RTS per S26
8 CTS control for SDLC accelerator
&S(n) 0 - 4 DSR Control 0
0 DSR is always on
1 DSR on after answer tone
2 DSR on/off specified by S47
3 DSR on/off as per DTR
4 DSR on after connect
&T(n) 0, 1, 3-9 Test Modes 4
0 Ends test in progress
1 Checks path between modem and DTE
3 Checks communication link and remote
modem
4 Enables acceptance of a test request from
remote modem
5 Denies test request from remote modem
6 Checks modem operation, DTE, and
telephone connection
7 Local modem sends self-test pattern to
remote modem
8 Modem performs a local self test
9 Runs diagnostic tests
&V 0 View Active Configuration
0 Displays active Ram configuration
&W(n) 0 or 1 Write Current Configuration
0 Writes currents setting per S255
1 Writes current settings to Configuration
B
&X(n) 0 - 2 Select Clock Source 0
0 Generates clock signal
1 DTE generates clock signal
2 Modem derives clock signal
~H(n) 0 - 9 Help
Provides a brief description of all
registers and commands
~L List Number Directory
~M(n) 0 or 1 Modify Stored Profile
0 Modify profile A
1 Modify profile B
~N Set Number Directory
~U Update Security Password
~V 0 or 1 View Nonvolatile Configurations
0 Display nonvolatile profile A
1 Display nonvolatile profile B
% Remote Modem Access
%~N Set Remote Number Directory
%~X Send Remote Access
%S46 Change Remote Modems’s System Password
Registers
The following briefly describes the S registers and shows each register’s range and default.
Register Range Description Default
S0 0 - 255 Answer on Ring Number 0
S1 0 - 255 Count of Rings (read only)
S2 0 - 255 Escape Character (ASCII) 43
S3 0 - 127 Command Line Terminator (ASCII 13
S4 0 - 255 Line Feed Character (ASCII) 10
S5 0 - 255 Backspace Character 8
S6 2 - 255 Pause Before Dialing (sec) 2 sec
S7 1 - 255 Wait for Connection /Dial Tone Time (sec) 60 sec
S8 0 - 255 Pause Time for Comma (seconds) 2
S9 1 - 255 Carrier Redetect Time 6
S10 1 - 255 Carrier Loss to Disconnect Time 14
S11 50 - 255 Touch Tone Timing 70
S12 0 - 255 Delay for Prompt Message 50
S18 0 - 255 Test Termination Timer 0
S25 5 - 255 DTR Delay Timer 5
S26 0 - 255 RTS-to CTS Delay Interval 1
S38 0 - 255 Delay Before Disconnecting 0
S41 0 - 255 Inactivity Time-Out 0
S45 0, 1, 255 Remote Access Enable 0
0 Disable remote access
1 Enables remote access with password
security
255 Enables/negotiates remote access
S46 0 - 3 Call Security 0
0 Callback security disabled
1 Callback security enabled
2 Callback security enabled with password
reverification
3 Passthrough security enabled, no callback
S47 0 - 255 DSR/DCD Delay Time (50 ms) 4
S48 0 or 1 Control Character Mask 0
0 Most significant bit is marked
1 Compare all eight bits
S50 0-3, 5-7, Modulation Mode 0
254, 255 0 Auto Speed Determination
1 300 bps (Bell 103or V.21 )
2 1200 bps (Bell 212A of V.22)
3 2400 bps (V.22bis)
5 1200/75 bps (V.23)
6 9600 bps (V.32)
7 14,400 bps (V.32bis)
254 Attempts to connect at closest current
non-PEP DTE speed
255 Fast operation (TurboPEP or PEP mode)
S51 0-9, 35, DTE Interface Speed 252
43, 0 300 bps
46, 1 1200 bps
252-255 3 4800 bps
35 7200 bps
4 9600 bps
43 12,000 bps
46 14,400 bps
5 19,200 bps
6 38,400 bps
7 57,600 bps
8 76,800 bps
9 115,200 bps
252 Autobaud
253 One-time autobaud (38,400 bps default)
254 One-time autobaud (19,200 bps default)
255 One-time autobaud (9600 bps default)
S56 0 - 255 XON Character (ASCII) 17
S57 0 - 255 XOFF Character (ASCII) 19
S58 0 - 4 DTE Flow Control 3
0 No flow control
1 Use RTS/CTS flow control in half duplex
mode
2 Use RTS/CTS flow control in full duplex
mode
3 Use XON/XOFF flow control
4 Use both XON/XOFF full duplex RTS/CTS
flow control
S59 0 - 15 CONNECT Suffixes (ASCII) 0
S60 0 - 4 Data Format 0
0 8 data bits, no parity
1 8 data bits, odd parity
2 8 data bits, even parity
3 8 data bits, mark parity
4 8 data bits, space parity
S61 0 - 1 Local Action of Break 1
0 Break processed as set in S63
1 Go into Command mode
S62 0 - 255 Break Length 15
S63 0 - 3 Link Layer Action on Break 0
0 Break is in sequence with data
1 Send break to remote DTE immediately
2 Reserved
3 Discard break signal
S64 0 or 1 Dial/Answer Sequence Abort 0
0 If characters are sent to modem, abort
dialing or answering
sequence
1 Ignore characters sent by DTE while
dialing or answering
a call
S68 0, 2-4, DCE Flow Control 255
255 0 No flow control
2 Full duplex RTS/CTS flow control
3 XON/XOFF flow control
4 Both XON/OFF and RTS/CTS flow control
255 Flow control specified by S58
S69 0 - 2 XON/SOFF Signal Handling 0
0 XON/XOFF character processed
1 Reserved
2 Processed if necessary
S70 Transmit Modulation Rate (read only)
S71 Transmit Bits Per Channel (reak only)
S72 Receive Modulation Rate (read only)
S73 Receive Bits Per Channel (read only)
S74 Link Protocol Packets Statistics (read only)
S78 Line Quality (read only)
S90 0 or 1 DSRS Behavior 0
0 Disable DTE/DSRS input
1 Enable DTE/DSRS input
S92 0 or 1 Answer Swquence Selection 0
0 Issue PEP answer tones at start of search
sequence
1 Issue PEP answer tones at end of search
sequence
S93 3 - 255 V.32bis/V.32 AC Transmit Time 8
S94 0 - 3 Modulation Speed Negotiation 1
0 Negotiation disabled
1 Allows a connection
2 Fallback within a specified modulation
scheme
3 Use only appropriate fallback
S100 0 or 1 Answer in Orginate Mode 0
0 Normal mode
1 Reverse mode
S104 0 - 1, 3, Automatic Dialing 0
4 0 Disable automatic dialing
1 DTR dialing
3 Press T/D switch to dial a prestored
number
4 DTR dialing/answering
S105 0 - 2 T/D Switch Enable 1
0 Disable T/D switch
1 Enable T/D switch
2 Enable T/D switch when on-hook
S111 0,10-14, File Transfer Protocol 255
20, 0 No protocol support
30,40 10 Kermit protocol, no parity
-43, 11 Kermit protocol, odd parity
50, 255 12 Kermit protocol, even parity
13 Kermit protocol, mark parity
14 Kermit protocol, space parity
20 Xmodem/Ymodem protocol
30 UUCP-g protocol
40 ENQ/ACK protocol, host
41 ENQ/ACK protocol, terminal
42 ENQ/ACK host, not negotiated
43 ENQ/ACK terminal, not negotiated
50 SDLC accelerator
255 Remote modem protocol
S112 0 - 255 Kermit Mark Character (ASCII) 1
S114 0 or 1 Calling Tone Enable 0
0 Calling tone disabled
1 Calling tone enabled
S115 0 or 1 Answer Tone Detection 0
0 Answer tone detection not required
1 Answer tone detection required
S151 0-5, 35, Synchronous Clock Speed
43, 0 300 bps
46 1 1200 bps
2 2400 bps
3 4800 bps
35 7200 bps
4 9600 bps
43 12,000 bps
46 14,400 bps
5 19,200 bps
S155 0 or 1 NRZ/NRZI Data Encoding 0
0 NRZ encoding used
1 NRZI encoding used
S180 0 - 3 Error Control Request 2
0 Error control disabled
1 V.42 without detection phase
2 V.42 with detection
3 MNP error control
S181 0 - 2 Error Control Fallback 1
0 If no error control, direct
1 If not error control, buffer
2 Error control required
S183 8 - 255 Error Control detection Timer 25
S190 0 or 1 Data Compression Enable 1
0 Disabled in both directions
1 Enabled in both directions
S191 6 or 7 Data Compression Negotiation 7
6 Disables Telebit LZ
7 Enables Telebit LZ
S253 0, 10, Command Set Selection 10
20, 22, 0 No command set
32 10 AT synchronous
20 V.25bis asynchronous
22 V.25bis sit synchronous
32 LPDA bit synchronous
S254 0, 1, 255 &F0 Configuration Select 255
0 Load profile A
1 Load profile B
255 Load factory defaults
S255 0, 1, 255 Configuration Select 255
0 Load profile A
1 Load profile B
255 Recall profile A/B switch
Article ID: 336
Created: January 15, 2009
Last Updated: January 15, 2009
Author: Beth Bartel
Online URL: https://kb.unavco.org/article/telebit-worldblazer-quick-reference-card-336.html