HP AT Command Guide Pavilion PC's PCTEL V.90/K56Flex Series Bph06377
User Manual: HP HP Pavilion PC's - PCTEL V.90/K56Flex Series AT Command Guide
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Page Count: 43
- Table of Contents
- Introduction
- AT Command Format
- Escape Code Sequence
- Basic AT Commands
- AT “&” Commands
- AT “%” Commands
- AT “ \ ” Commands
- AT “\Kn” Description
- AT “*”Commands
- AT “+” Commands Summary
- AT+ Command Descriptions
- AT “#” Command (Non Voice)
- AT "–"Command
- Result Codes
- S Registers
- FAX Class 1 Command Set
- AT Voice Commands Summary
- AT Voice Command Descriptions
- Shielded Codes
- PTT Testing
- Default Country Specific Profiles
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AT Command Guide
V90K56DOCATC11A
V.90/K56Flex Series
AT Command Guide
June, 2000
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AT Command Guide
V90K56DOCATC11A
INTRODUCTION ........................................................................................................................................................ 3
AT COMMAND FORMAT .......................................................................................................................................... 3
ESCAPE CODE SEQUENCE ........................................................................................................................................ 3
BASIC AT COMMANDS ............................................................................................................................................ 4
AT “&” COMMANDS .............................................................................................................................................. 6
AT “%” COMMANDS .............................................................................................................................................. 7
AT “ \ ” COMMANDS ............................................................................................................................................... 8
AT “\KN” DESCRIPTION .......................................................................................................................................... 8
AT “*”COMMANDS................................................................................................................................................. 9
AT “+” COMMANDS SUMMARY.............................................................................................................................. 9
AT+ COMMAND DESCRIPTIONS............................................................................................................................... 9
AT “#” COMMAND (NON VOICE) ......................................................................................................................... 18
AT – COMMAND.................................................................................................................................................... 18
RESULT CODES ...................................................................................................................................................... 19
S REGISTERS.......................................................................................................................................................... 22
FAX CLASS 1 COMMAND SET ............................................................................................................................... 26
AT VOICE COMMANDS SUMMARY ........................................................................................................................ 26
AT VOICE COMMAND DESCRIPTIONS .................................................................................................................... 28
SHIELDED CODES ................................................................................................................................................... 37
PTT TESTING......................................................................................................................................................... 39
DEFAULT COUNTRY SPECIFIC PROFILES................................................................................................................. 42
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V90K56DOCATC11A
Introduction
This manual describes the AT commands for PCTEL modems.
AT Command Format
A command line is a string of characters sent from a DTE to the modem (DCE) while the modem is
in a command state. A command line has a prefix, a body, and a terminator. Each command line
(with the exception of the A/ command) must begin with the character sequence AT and must be
terminated by a carriage return. Commands entered in upper case or lower case are accepted, but
both the A and T must be of the same case, i.e., “AT or “at. The default terminator is the ENTER
key <CR> character. Characters that precede the AT prefix are ignored. The command line
interpretation begins upon receipt of the ENTER key character.
Characters within the command line are parsed as commands with associated parameter values. The
basic commands consist of single ASCII characters, or single characters proceeded by a prefix
character (e.g., “&” or “+”), followed by a decimal parameter. Missing decimal parameters are
evaluated as 0.
Escape Code Sequence
When the modem has established a connection and has entered on-line data mode, it is possible to
break into the data transmission in order to issue further commands to the modem in an on-line
command mode. This is achieved by the DTE sending to the modem a sequence of
+++AT<ENTER>. To issue a disconnect sequence type +++ATH<ENTER>. This format complies
with the Time Independent Escape Sequence (TIES).
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Basic AT Commands
Command Function
AT Attention - this precedes all commands except A/
A/ Execute previous command - does not require a <CR> *
A Causes the modem to go off hook. If a call is coming in, the modem will try to answer it. The
procedure for answering a call is a short silence and then an answer tone. Sending a character
to the modem during this procedure will abort the answer procedure. The amount of time the
modem will wait for a carrier is programmable by modifying the S7 register.
B0 Select CCITT V.22 (1200 bps)
B1 Select Bell 212A (1200 bps)
B2 Select CCITT V23
Originate mode will transmit data at 75 bps and receive data at 1200 bps.
Answer mode will transmit data at 1200bps and receive data at 75bps. The command N0
(Disable auto mode) must be selected.
D D alone will take the modem off-hook and wait for a dial tone. (See X command for
exceptions) The length of time to wait for a dial tone before dialing is programmable in register
S6.
Dmn ATDmn will dial a phone number where m is a modifier: L, W, ,, ;, @, !, or S. It will dial the
telephone number n.
L Dial last number
W Wait for dial tone. If you have selected X0 or X1 (disable dial tone detection), then you can
use this modifier to override that setting.
T Tone dialing
Pulse and Tone dialing cannot be mixed on the same command line.
P Pulse dialing allows the modem to work on telephone networks where tone dialing is not
supported.
Pulse and Tone dialing cannot be mixed on the same command line.
, Pause during dial. The amount of time to pause is determined in register S8.
; Return to command mode after dialing. It doesn’t wait for carrier or hang up.
@ Wait for 5 seconds of silence. This is used to access systems that do not provide a dial tone.
! Hook flash. Causes the modem to go on-hook for 0.5 seconds. This is used in PBX systems
and for voice features like call waiting.
^ Send 1300Hz calling tone
S=(0-9) Dials a stored number. Up to ten numbers can be stored, and the addresses are from 0 to 9. To
store a number into one of these addresses, use the & Z command.
E0 Commands issued to the modem are not echoed to the local terminal. This only matters in the
command mode. It does not affect the modem’s ability to send response codes.
E1 Commands are echoed to the local terminal.
H0 Force modem on-hook (hang-up).
H1 Force modem off-hook (to answer or dial).
I0 Return numeric product code
I1 Return hardware variation code
I2 Report internal code
I3 Report software revision number
I4 Report product feature listing
I5 Highest Speed Modulation
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L0 Speaker volume zero
L1 Speaker volume low
L2 Speaker volume low
L3 Speaker volume low (Hardware currently limits volume adjustment to on/off)
M0 Speaker always off
M1 Speaker on until carrier detected
M2 Speaker always on
M3 Speaker on during answering only
N0 Disable auto-mode. This forces the modem to connect at the speed specified in register S37.
N1 Enable auto-mode. The modem will connect at the highest available line speed and ignore any
ATBn command.
O0 Return to data mode. If you have entered the command mode using the time independent
escape sequence, this will put you back in data mode without going on-hook.
O1 Retrain the modem. If the line condition has changed since the original connection, retraining
the modem will cause it to reconnect at the most efficient speed for the current line condition.
Q0 Enable response to DTE.
Q1 Disable response to DTE. The modem does not send responses to the terminal. Issuing a
command will not produce a response (unless the command is something like ATZ, which will
restore this setting to default.)
Sn Set default S-register. Any subsequent = or ? commands will modify the default S register.
Sn=m Set register n to value m
Sn? Return the value of register n
V0 Result codes will be sent in numeric form. (See the result code table)
V1 Result codes will be sent in word form. (See the result code table.
W0 Report DTE speed only. After connection, there will be no message about what Error
Correction or Data Compression protocol is in use.
W1 Report DCE speed, Error Correction/Data Compression protocol, and DTE speed.
W2 Report DCE speed only
X0 Send OK, CONNECT, RING, NO CARRIER, ERROR and NO ANSWER. Busy and Dial
Tone Detection is disabled.
X1 Send X0 messages and CONNECT speed
X2 Send X1 message and NO DIALTONE
X3 Send X2 messages and BUSY and RING BACK. Dial Tone Detection is disabled.
X4 Send all responses
Y0 Disable long space disconnect
Y1 Enable long space disconnect; with error correction, hang up after sending 1.6 second long
space; without error correction, hang up after 4 second long space.
Z0 Uses profile in & W0 Reset to configuration stored in profile 0
Z1 Uses profile in & W1 Reset to configuration stored in profile 1
=n Sets the value of the default S register
? Reports the value stored in the default S register.
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AT “&” Commands
& Ampersand Commands
&C0 Force DCD on
&C1 DCD follows remote carrier
&D0 DTR is assumed on
&D1 DTR drop causes modem to enter command mode without disconnecting
&D2 DTR drop causes modem to hang up
&D3 DTR drop causes modem to hang up and be reinitialized; &Y determines which profile is
loaded.
&F Load factory profile
&G0 Disable guard tone
&G1 Enable 550Hz guard tone
&G2 Enable 1800Hz guard tone on answering modem
&K0 Disable flow control
&K3 Enable RTS/CTS flow control
&K4 Enable XON/XOFF flow control
&K5 Enable transparent software flow control
&K6 Enable both RTS/CTS and XON/XOFF flow control
&P0 Selects 33%-67% make/break ratio at 10 pulses per second
&P1 Selects 33%-67% make/break ratio at 20 pulses per second
&P2 Selects 39%-61% make/break ratio at 10 pulses per second
&P3 Selects 39%-61% make/break ratio at 20 pulses per second
&S0 Force DSR on
&S1 DSR on at the start of handshaking and off after carrier loss
&T0 Terminate test
&T1 Start ALB test (not supported in MicroModem series)
&U0 Enable trellis coding
&U1 Disable trellis coding
&V0 Display active profile
&V1 Display stored profiles
&V2 Display stored telephone numbers
&W0 Save active profile to profile 0
&W1 Save active profile to profile 1
&Y0 Use profile 0 on powerup
&Y1 Use profile 1 on powerup
&Zn=m Save telephone number (up to 100 digits) into memory location n (0-9)
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AT “%” Commands
% Percent Commands
%A0 Mu law encoding: Automatically selected based on country code selection
%A1 A law encoding
%C0 Disable data compression
%C1 Enable MNP5 compression
%C2 Enable V.42bis compression
%C3 Enable both V.42bis and MNP5
%E0 Disable auto-retrain
%E1 Enable auto-retrain
%E2 Enable auto-retrain and fallback
%E3 Enable auto-retrain and fast hang up
%L Report received signal level in -dBm
%N0
%N1
%N2
%N3
%N4
%N5
%N6
%N7
%N8
%N9
Dynamic CPU loading disabled
Dynamic CPU loading not to exceed 10%
Dynamic CPU loading not to exceed 20%
Dynamic CPU loading not to exceed 30%
Dynamic CPU loading not to exceed 40%
Dynamic CPU loading not to exceed 50%
Dynamic CPU loading not to exceed 60%
Dynamic CPU loading not to exceed 70%
Dynamic CPU loading not to exceed 80%
Dynamic CPU loading not to exceed 90%
%Q Report line signal quality
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AT “ \ ” Commands
\ Backslash Commands
\A0 64-character max. MNP block size
\A1 128-character max. MNP block size
\A2 192-character max. MNP block size
\A3 256-character max. MNP block size
\Bn In non-error correction mode, transmit break in 100 ms units (1-9 with default 3)
\G0 Disable XON/XOFF flow control (modem to modem)
\G1 Enable XON/XOFF flow control (modem to modem)
\Kn Define break type (refer to the AT “\Kn Description)
\L0 Use stream mode for MNP
\L1 Use interactive block mode for MNP
\N0 Normal mode; speed control without error correction
\N1 Plain mode; no speed control and no error correction
\N2 Reliable mode
\N3 Auto-reliable mode
\N4 LAPM error correction only
\N5 MNP error correction only
AT “\Kn” Description
\Kn
Local DTE sends break
during normal or reliable
mode
Local modem sends break
during plain mode
Remote modem sends break
during normal mode
\K0 Enter command state; no
break to remote
Break to remote; and enter
command state
Empty data buffers; and send
break to DTE
\K1 Empty data buffers; break
to remote
Same as\K0 Same as\K0
\K2 Same as\K0 Send break to remote Immediately send break to DTE
\K3 Immediately send break to
remote
Same as\K0 Same as\K2
\K4 Same as\K0 Same as\K2 Send break to DTE with buffered
RXD data
\K5 Send break to remote with
TXD data
Same as\K2 Same as\K4
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AT “*”Commands
* Asterisk commands
*Q0
*Q1
Send the “CONNECT xxxx” result codes to the DTE when an invalid TIES escape sequence is
detected after the “OK” response has already been sent
Does NOT send the “CONNECT xxxx” result codes to the DTE when an invalid TIES escape
sequence is detected after the “OK” response has already been sent
AT “+” Commands Summary
+ + Commands
+DR Data Compression Reporting
+DS Data Compression
+ER Error Control Reporting
+EB Break Handling in Error Control Operation
+ES Error Control Selection
+ETBM Call Termination Buffer Management
+ICF Character Format
+IFC PC to Modem Local Flow Control
+ILRR PC (DTE) – Modem (DCE) local Rate Reporting
+GMI Request Manufacturer Identification
+GMM Request Model Identification
+GMR Request Revision Identification
+MA Modulation Automode Control
+MR Modulation Reporting Control
+MS Modulation Selection
AT+ Command Descriptions
+DR – Data Compression Reporting
+DR = <value>
This parameter controls whether or not the extended-format “+DR” intermediate result code is
transmitted from the modem to the local PC.
+DR: NONE Data Compression is not used
+DR: V42B V.42bis is in use in both directions
+DR?
The modem shall send text to the local PC, consisting of:
+DS: <current value>
e.g. +DR: 0
+DR=?
+DR: (list of supported values)
Modem responds with list(s) of supported values
e.g. +DS: (0,1)
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+DS – Data Compression
+DS = [<direction>[,<compression_negotiation>[,<max_dict>[,<max_string>]]]]
This parameter controls the manner of operation of the V.42 operation in the modem. It accepts
3 numeric sub-parameters:
<direction>: Specifies the desired direction(s) of operation of the data compression function
from the local PC point of view.
<compression_negotiation>: Specifies whether or not the local PC should continue to operate if
the desired result is not obtained
<max_dict>: Specifies the maximum number of dictionary entries, which should be negotiated
<max_string>: Specifies the maximum string length to be negotiated (V.42bis P2)
<direction> Description
0 Negotiated – no compression (V.42bis P0=0)
1 Transmit only
2 Receive only
3 Both directions, accept any direction (V.42bis P0=0)
< compression_
negotiation >
Description
0 Do not disconnect if V.42bis is not negotiated by the
remote modem as specified in <direction>
1 Disconnect if V.42bis is not negotiated by the remote
modem as specified in <direction>
< max_dict> 2048
< max_string> 32
+DS?
The modem shall send text to the local PC, consisting of:
+DS: <direction>, <compression_negotiation>, <max_dict><max_string>
e.g. +DS: 3,0,2048,32
+DS=?
+DS: (list of supported < direction > values, (list of supported < compression_negotiation >
values), (list of supported <max_dict > values), (list of supported <max_string > values)
Modem responds with list(s) of supported values
e.g. +DS: (0-3), (0-2), (2048), (32)
+ER –Error Control Reporting
+ER = <value >
This parameter controls whether or not the extended-format “+ER” intermediate result code is
transmitted from the modem to the local PC:
The +ER intermediate result code, if enabled, is issued after the modulation report (+MCR and
+MRR) and before the Data Compression Report (+DR)
+ER: NONE Error control is not in use
+ER: LAPM V.42 LAPM protocol is in use
+ER: ALT V.42 Alternative (MNP) protocol is in use
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ER?
The modem shall send text to the local PC, consisting of:
+ER: <current setting>
e.g. +ER: 0
+ER=?
+ER: (list of supported values)
e.g. +ER: (0,1)
Value Description
0 Error control reporting disabled (No + ER immediate
result code trasmitted)
1 Error control reporting enabled (No + ER immediate
result code trasmitted)
+EB – Break Handling in Error Control Operation
+EB = [<break_selection>[, <timed>[, <default_length>]]]
This parameter is used to control the manner of operation of the V.42 operation in the modem.
It accepts 3 numeric sub-parameters:
<break_selection>: Specifies the type of break to be signaled to the remote modem upon
detecting a break from the local PC (see Recommendation V.42 for different break
types).
<timed>: Specifies if the break signal to the remote modem is timed or not.
<default_length>: Specifies the amount of time in tens of milliseconds that a break should be
signaled to the local PC when a break indication is received from the remote modem
without a break length explicitly indicated.
< break_selection > Description
0 Ignore break (do not signal to remote modem)
1 Non-expedited, non-destructive
2 Expedited, non-destructive
3 Expedited and destructive
<timed> Description
0 Any transmitted V.42 L-SIGNAL shall NOT indicate
break signal length
1 Any transmitted V.42 L-SIGNAL shall indicate break
signal length
< default_length> Description
0 Do not deliver break to local PC
1 to 200 Default break length of 0.01 to 2 seconds
Other Higher values may be supported
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V90K56DOCATC11A
+EB?
The modem shall send text to the local PC, consisting of:
+EB: <break_selection>, <timed>, <default_length><CR>
e.g. +EB: 1,0,30<CR>
+EB=?
+EB: (list of supported < break_selection > values, (list of supported <timed> values), (list of
supported <default_length > values)
Modem responds with list(s) of supported values
+ES – Error Control Selection
+ES = [<orig_rqst>[, <orig_fbk>[,<ans_fbk>]]]
This parameter is used to control the manner of operation of the V.42 protocol in the modem. It
accepts 3 numeric sub-parameters:
<orig_rqst>: Specifies the initial request mode of operation when originating a call
<orig_fbk>: Specifies the acceptable fallback mode of operation when originating a call
<ans_fbk>: Specifies the acceptable fallback mode of operation when answering a call
<orig_rqst> Description
0 Direct Mode
1 Initiate call with Buffer mode only
2 Initiate V.42 without Detection phase. If V.8 is in use,
this is a request to disable V.42 Detection Phase
3 Initiate V.42 with Detection Phase
4 Initiate Alternative Protocol
<orig_fbk> Description
0 Error Control Optional; if error control can not be
established, use Buffered mode with flow control
1 Errol Control Optional; if error control can not be
established, change data rate to match line <carrier>
rate and use Direct mode.
2 Error Control Required; if error control can not be
established, disconnect.
3 Error Control (LAPM) Required if LAPM can not be
established, disconnect.
4 Error Control (Alternate (MNP)) Required if MNP can
not be established, disconnect.
<ans_fbk> Description
0 Direct Mode
1 Error Control Disabled, use Buffered mode
2 Error Control Optional; if error control can not be
established, use Buffered mode with flow control
3 Errol Control Optional; if error control can not be
established, change data rate to match line <carrier>
rate and use Direct mode.
4 Error Control Re
q
uired; if error control can not be
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V90K56DOCATC11A
established, disconnect.
5 Error Control (LAPM) Required if LAPM can not be
established, disconnect.
6 Error Control (Alternate (MNP)) Required if MNP can
not be established, disconnect.
+ES?
+ES=?
+ETBM – Call Termination Buffer Management
+ETBM = [<pending_TD>[,<pending_RD>[,<timer>]]]
This parameter controls the handling of data remaining in the modems buffers upon call
termination. It accepts 3 numeric sub-parameters:
<pending_TD>: Controls how previously-transmitted data remaining in the modems buffers
should be handled when the local PC requests disconnection of the call
<pending_RD>: Controls how previously received data remaining in the modems buffers
should be handled when the remote modem disconnects the call
<timer>: Sets the maximum time limit on how long the modem will attempt to deliver the
buffered data before abandoning the attempt and disregarding remaining data.
Circuit 109 (Carrier Detect) is held in the ON condition until all pending data is delivered or
discarded.
<pending_TD> Description
0 Discard all buffered data immediately and disconnect
1 Attempt until all data is delivered and acknowledged
(ignore timer); if remote modem disconnects, disregard
remainder
2 Attempt until all data is delivered and acknowledged; if
timer expires or remote modem disconnects, disregard
remainder
<pending_RD> Description
0 Discard all buffered data immediately and disconnect
1 Attempt until all data is delivered (ignore timer); if
local PC requests disconnect, disregard remainder
2 Attempt until all data is delivered ; if timer expires or
local PC requests disconnect, disregard remainder
<timer> Description
0 to 30 Delivery timer value in seconds
Other Higher values may be supported (reserved for future
use)
+ETBM?
+ETBM: <pending_TD>,<pending_RD>,<timer>
Modem responds with current settings
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V90K56DOCATC11A
+ETBM=?
+ETBM: (list of supported <pending_TD> values, (list of supported <pending_RD> values),
(list of supported <timer> values)
Modem responds with list(s) of supported values
+ICF – Character Format
+ICF = [<format>[, <parity>]]
Sets the character framing between the PC and the PCTEL modem for use while the modem is
receiving commands and while sending information text and result codes. +IPR=0 forces
+ICF=0
<format> Valid Numeric Values
0 Auto detect
1 8 Data 2 Stop
2 8 Data 1 Parity 1 Stop
3 8 Data 1 Stop
4 7 Data 2 Stop
5 7 Data 1 Parity 1 Stop
6 7 Data
<parity> Define Numeric Values
0 Odd
1 Even
2 Mark
3 Space
+ICF?
+ICF: <format>, <parity>
Modem responds with current settings
+ICF=?
+ICF: (list of supported <format> values, (list of supported <parity> values)
Modem responds with list(s) of supported values
IFC – PC to Modem Local Flow Control
+IFC = [<modem_by_PC>[, <PC_by_modem>]]
This parameter is used to control the operation of local flow control between the PC and
Modem during the data state when V.42 error control is being used, or when fallback to non-
error control mode is specified to include buffering and flow control. It accepts 2 numeric sub-
parameters
<modem_by_PC>: Specifies the method used by the PC to control the flow of data it receives
from the modem.
<PC_by_modem>: Specifies the method to be used by the modem to control the flow of
transmitted data from the PC
< modem_by_PC > Description
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0 None
1 DC1/DC3 (in band- X-On/X-Off) on circuit
103 (TD); do not pass DC1/DC3 characters
to the remote modem
2 Circuit 133 (Ready for Receiving)
4 to 127 Reserved
Other Reserved
<PC_by_modem> Description
0 None
1 DC1/DC3 (in band- X-On/X-Off) on circuit
104 (RD)
2 Circuit 106 (Clear to Send/Ready for
Sending)
3 to 127 Reserved
Other Reserved
+IFC?
+IFC: <modem_by_PC>, <PC_by_modem>
Modem responds with current settings
+IFC=?
+IFC: (list of supported <modem_by_PC> values, (list of supported <PC_by_modem> values)
Modem responds with list(s) of supported values
+ILRR – PC (DTE) – Modem (DCE) Local Rate Reporting
+ILRR=<value>
<value> Description
0 Disables reporting of local port rate (+ILRR: is
not transmitting)
1 Enables reporting of local port rate (+ILRR: is
transmitting)
+ILRR?
+ILRR: <current setting >
Modem responds with current settings
+ILRR=?
+ILRR: (list of supported values)
Modem responds with list of supported values
+GMI – Request Manufacturer Identification
Responds with: PCTEL, Inc.
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+GMM – Request Model Identification
Reports the model HSP Data/Fax Modem
+GMR – Request Revision Identification
Reports the driver revision
+MA – Modulation Automode Control
+MA= [<carrier>, [<carrier>[, <carrier>[,…]]]]
This parameter is a list of modulations that the modem may use to connect with the remote
modem in Automode operation.
+MR – Modulation Reporting Control
+MR= <value>
The <carrier> reported shall be the current (negotiated or renegotiated) modulation <carrier>. If
enabled, the intermediate result codes are transmitted at the point during connect negotiation
(handshaking) at witch the modem has determined which modulation and rate will be used,
before any Error Control or Data Compression reports are transmitted, and before any final
result code (e.g. CONNECT) is transmitted.
The format of this information text is:
+MCR: <carrier> e.g. +MCR: V32B
+MRR: <rate>[, <rx_rate>] e.g. +MRR: 14400
<value> Description
0 Disables reporting modulation connection
(+MCR and +MRR: are not transmitted)
1 Enables reporting modulation connection
(+MCR and +MRR: are transmitted)
+MR?
The DCE shall transmit a line of information test to the DTE, consisting of:
+MR:<current setting>
For example, with the current recommended default setting the DTE could report:
+MR:0
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Test syntax
+MR=?
The DCE shall transmit a string of information test to the DTE, consisting of:
+MR:(list of supported values)
For example, a DCE that supported all defined settings would report:
+MR:(0,1)
+MS - Modulation Selection
This extended format command selects the modulation, optionally enables or disables automode, and
optionally specifies the lower and highest connection rate using up to four sub-parameters.
+MS= <carrier>[, [<automode>][,[<min_rate>][,[<max_rate>]]]]
<carrier> Modulation
V21 V.21
V22 V.22
V22B V.22bis
V23 V.23, with Switched carrier
V32 V.32
V32B V.32bis
V34 V.34
V.90 V.90
K56FLEX K56FLEX
<automode> Option Selected
0 Disabled
1 enabled, with V.8 or Annex A – V.32bis where applicable
+MS?
+MS: <carrier>, <automode>, <min_rate>, <max_rate>, <min_rx_rate>, <max_rx_rate>
Modem responds with current values
+MS=?
+MS:
(list of supported <carrier> values, (list of supported <automode> values), (list of supported <min_rate>
values), (list of supported <max_rate> values), (list of supported <min_rx_rate> values), (list of supported
<max_rx_rate> values)
Modem responds with list(s) of supported values
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AT “#” Command (Non Voice)
#UD
This command reports calls received from the diagnostics information at the end of a PSTN data call.
The output format of the report consists of number of lines; each contains a series of numeric report
codes. For details of the report format refer to Microsoft’s Unimodem Diagnostics Command
Reference Specifications.
#UG
This command is similar to #UD except the report is more legible.
AT – Command
-V90 Enable or disable
V.90
-V90 = 1 Enables V.90
-V90 = 0 Disables V.90
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Result Codes
Long Form Short Form Description
OK 0 Modem successfully executed a AT command
CONNECT 1 A connection established
RING 2 Modem detected an incoming call
NO CARRIER 3 Modem lost or could not detect a remote carrier signal within
the register S7 time
ERROR 4 Modem detected an error in an AT command
CONNECT 1200 5 Connection at 1200 bps
NO DIALTONE 6 Modem did not detect a dial tone within 5 seconds after off-
hook
BUSY 7 Modem detected a busy tone
NO ANSWER 8 Modem did not detect 5 seconds of silence when using the @
dial modifier in the dial command
CONNECT 0600 9 Connection at 600 bps
CONNECT 2400 10 Connection at 2400 bps
CONNECT 4800 11 Connection at 4800 bps
CONNECT 9600 12 Connection at 9600 bps
CONNECT 7200 13 Connection at 7200 bps
CONNECT 12000 14 Connection at 12000 bps
CONNECT 14400 15 Connection at 14400 bps
CONNECT 19200 16 Connection at 19200 bps
CONNECT 38400 17 Connection at 38400 bps
CONNECT 57600 18 Connection at 57600 bps
CONNECT 115200 19 Connection at 115200 bps
CONNECT 28800 20 Connection at 28800 bps
CONNECT 300 21 Connection at 300 bps
CONNECT 1200TX/75RX 22 Connection at transmit 1200/receive 75 bps
CONNECT 75TX/1200RX 23 Connection at transmit 75/receive 1200 bps
CONNECT 110 24 Connection at 110 bps
RING BACK 25 Ring Back signal detected
+FCERROR +F4 Error occurred in Class 1 fax operation
FAX 33 Fax modem connection established
DATA 35 Data modem connection established
CARRIER 300 40 Carrier rate of 300 bps
CARRIER 1200/75 44 Carrier rate of transmit 1200/receive 75 bps
CARRIER 75/1200 45 Carrier rate of transmit 75/receive 1200 bps
CARRIER 1200 46 Carrier rate of 1200 bps
CARRIER 2400 47 Carrier rate of 2400 bps
CARRIER 4800 48 Carrier rate of 4800 bps
CARRIER 7200 49 Carrier rate of 7200 bps
CARRIER 9600 50 Carrier rate of 9600 bps
CARRIER 12000 51 Carrier rate of 12000 bps
CARRIER 14400 52 Carrier rate of 14400 bps
CARRIER 16800 53 Carrier rate of 16800 bps
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V90K56DOCATC11A
Long Form Short Form Description
CARRIER 19200 54 Carrier rate of 19200 bps
CARRIER 21600 55 Carrier rate of 21600 bps
CARRIER 24000 56 Carrier rate of 24000 bps
CARRIER 26400 57 Carrier rate of 26400 bps
CARRIER 28800 58 Carrier rate of 28800 bps
CONNECT 16800 59 Connection at 16800 bps
CONNECT 21600 61 Connection at 21600 bps
CONNECT 24000 62 Connection at 24000 bps
CONNECT 26400 63 Connection at 26400 bps
COMPRESSION: CLASS 5 66 MNP Class 5 data compression connection established
COMPRESSION: V.42bis 67 V.42bis data compression connection established
COMPRESSION: NONE 69 Connection established without data compression
PROTOCOL: NONE 76 Connection established without error correction
PROTOCOL: LAPM 77 V.42/LAPM error correction connection established
PROTOCOL: ALT 80 MNP 3-4 error correction connection established
CARRIER 31200 90 Carrier rate of 31200 bps
CARRIER 33600 91 Carrier rate of 33600 bps
CONNECT 31200 95 Connection at 31200 bps
CONNECT 33600 96 Connection at 33600 bps
CARRIER 32000 97 Connection at 32000 bps
CARRIER 34000 98 Connection at 34000 bps
CARRIER 36000 99 Connection at 36000 bps
CARRIER 38000 100 Connection at 38000 bps
CARRIER 40000 101 Connection at 40000 bps
CARRIER 42000 102 Connection at 42000 bps
CARRIER 44000 103 Connection at 44000 bps
CARRIER 46000 104 Connection at 46000 bps
CARRIER 48000 105 Connection at 48000 bps
CARRIER 50000 106 Connection at 50000 bps
CARRIER 52000 107 Connection at 52000 bps
CARRIER 54000 108 Connection at 54000 bps
CARRIER 56000 109 Connection at 56000 bps
CARRIER 58000 110 Connection at 58000 bps
CARRIER 60000 111 Connection 60000 bps
CARRIER 28000 112 Connection 28000 bps
CARRIER 29333 113 Connection 29333 bps
CARRIER 30666 114 Connection 30666 bps
CARRIER 33333 115 Connection 33333 bps
CARRIER 34666 116 Connection 34666 bps
CARRIER 37333 117 Connection 37333 bps
CARRIER 38666 118 Connection 38666 bps
CARRIER 41333 119 Connection 41333 bps
CARRIER 42666 120 Connection 42666 bps
CARRIER 45333 121 Connection 45333 bps
CARRIER 46666 122 Connection 46666 bps
CARRIER 49333 123 Connection 49333 bps
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V90K56DOCATC11A
Long Form Short Form Description
CARRIER 50666 124 Connection 50666 bps
CARRIER 53333 125 Connection 53333 bps
CARRIER 54666 126 Connection 54666 bps
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AT Command Guide
V90K56DOCATC11A
S Registers
REG. Function
0 Rings to auto-answer
Set the number of rings required before the modem answers. 0 setting disables auto-answer.
Range: 0 - 255 rings
Default: 0 (auto-answer disabled)
1 Ring counter
Counts the number of incoming rings before the modem answers.
Resets to 0 after five seconds of silence
Range: 0 - 255 rings
Default: 0
2 Escape character
Define the character used for the three-character escape code sequence. 0 setting disables the
escape code character.
Range: 0 - 127
Default: 43 (+)
3 Carriage return character
Define the character for carriage return
Range: 0 - 127
Default: 13 (carriage return)
4 Line feed character
Define the character for line feed
Range: 0 - 127
Default: 10 (line feed)
5 Backspace character
Define the character for backspace
Range: 0 - 127
Default: 8 (backspace)
6 Wait before dialing
Set the length of time to pause after off hook before dial.
Range: 2 - 255 seconds
Default: 2 seconds
7 Wait for carrier after dial
Set the length of time that the modem waits for a carrier from the remote modem before hanging
up.
Range: 1 - 255 seconds
Default: 65 seconds
8 Pause time for dial delay
Set the length of time to pause for the pause dial modifier “,”.
Range: 0 - 255 seconds
Default: 2 seconds
9 Carrier detect response time
Define the length of time a signal is detected and qualified as a carrier.
Range: 1 - 255 tenths of a second
Default: 6 (0.6 second)
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V90K56DOCATC11A
REG. Function
10 Lost carrier hang up delay
Set the length of time the modem waits before hanging up after a carrier loss.
Range: 1 - 255 tenths of a second
Default: 14 (1.4 seconds)
11 DTMF speed control
Set the length of tone and the time between tones for the tone dialing.
Range: 50 - 255 milliseconds
Default: 95 milliseconds
12 Escape Prompt Delay (EPD) timer
Set the time from detection of the last character of the three character escape sequence until the
“OK” is returned to the DTE
Range: 0 - 255 fiftieths of a second
Default: 50 (1 second)
13 Reserved
14 Reserved
15 Reserved
16 Reserved
17 Reserved
18 Test timer
Set the length of loopback test.
Range: 0 - 255 seconds (not supported in MicroModem series)
Default: 0 (disable timer)
19 Reserved
20 Reserved
21 Reserved
22 Reserved
23 Reserved
24 Reserved
25 Delay to DTR
Set the length of time the modem ignores DTR before hanging up
Range: 0 - 255 hundredths of a second
Default: 5 (0.05 second)
26 Reserved
27 Reserved
28 Reserved
30 Disconnect inactivity timer
set the length of time allowed for inactivity before the connection is hung up.
Range: 0-255 in minutes
Default: 0 (disabled)
32 XON character
Set the value of XON character
Range: 0-255
Default: 17
33 XOFF character
Set the value of XOFF character
Range: 0-255
Default: 19
REG. Function
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V90K56DOCATC11A
34 V.90 data rate (bit-rate)
Set the maximum bit rate for V.90
Range: 0-21
bit rate = 28000 + S34 * 1333bps
K56Flex data rate (bit-rate)
Set the maximum bit rate for 56K
Range: 0-12
bit rate = 32000bps + S34 * 2000bps
V.34 data rate (bit-rate)
Set the maximum bit rate for V.34
Range : 0-8 (2400 baud)
bit rate = ((S34)+1) * 2400bps
Default: 21 (33600 bps)
35 V.34 symbol rate (baud-rate)
Set the maximum baud rate for V.34
Range: 0-5
0 - 2400 baud
1 - 2743 baud (N/A)
2 - 2800 baud (N/A)
3 - 3000 baud
4 - 3200 baud
5 - 3429 baud (N/A until V.34bis)
Default: 0 (2400 baud)
36 Reserved
37 Line connection speed
0 - Attempt to connect at the highest speed
3 - Attempt to connect at 300 bps
4 - Attempt to connect at 1200 bps
6 - Attempt to connect at 2400 bps
7 - Attempt to connect at 4800 bps
8 - Attempt to connect at 7200 bps
9 - Attempt to connect at 9600 bps
10 - Attempt to connect at 12000 bps
11 - Attempt to connect at 14400 bps
12 - Attempt to connect at V.34
13 - Attempt to connect at 56K
14 – Attempt to connect at V.90
Default: 0
38 Delay before forced hang up
Set the delay to hang up after the disconnecting command is received.
Range: 0 - 255 Milliseconds
Default: 20 Milliseconds
39 Reserved
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V90K56DOCATC11A
REG. Function
40 Reserved
41 Reserved
42 Reserved
43 Reserved
44 Reserved
45 Reserved
46 Reserved
47 Reserved
48 Reserved
82 Reserved
86 Call failure reason code
0 - Normal disconnect; no error
4 - Loss of carrier
5 - V.42 negotiation failed to detect an error correction modem at remote end
6 - No response to complete negotiation
9 - No common protocol
12 - Remote initiated a normal disconnect
13 - Remote modem did not respond after 10 message retransmissions
14 - Protocol violation
15 - Compression Failure
20 - Hang up by inactivity time out
91 Transmit level
Set the transmit level in -dBm
Range: 0 - 15 (-dBm)
Default: 11 (-11
dBm)
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AT Command Guide
V90K56DOCATC11A
FAX Class 1 Command Set
Command Function
+FCLASS=0 Select data mode
+FCLASS=1 Select facsimile Class 1 mode
+FAE? Report active adaptive answer setting: 0 for disabled, 1 for enabled
+FAE=? Report adaptive answer capability
+FAE=0 Disable adaptive answer
+FAE=1 Enable adaptive answer
+FCLASS=? Report service classes supported
+FTS=n Stop transmission and pause, 0-255 in 10 ms
+FRS=n Wait for silence, 0-255 in 10 ms
+FTM=? Report Class 1 transmit capabilities (= 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122,
145, 146)
+FRM=? Report Class 1 receive capabilities (= 3, 24, 48, 72, 73, 74, 96, 97, 98, 121, 122,
145, 146)
+FTH=n Transmit data with carrier n, n = 3
+FRH=n Receive data with carrier n, n = 3
AT Voice Commands Summary
Command Function
ATA Answering in Voice Mode
ATD Dial command in Voice Mode
ATH Hang up in Voice Mode
ATZ Reset from Voice Mode
AT+FCLASS=
8
Enter Voice Mode: This command must be issued prior to entering any other
voice commands.
AT#BDR Select baud rate (turn off autobaud)
AT#CID Enable Caller ID detection and select reporting format
AT#CLS Select data, fax, or voice
AT#MDL? Identify model
AT#MFR? Identify manufacturer
AT#TL Transmit level control
AT#REV? Identify revision level
AT#RG Record gain control
AT#SPK Change the setting of Speakerphone
AT#VBS Bits per sample (ADPCM)
AT#VBT Beep tone timer
AT#VLS Voice line select (ADPCM)
AT#VRA Ringback goes away timer (originate)
AT#VRX Voice Receive Mode (ADPCM)
AT#VSD Silence deletion tuner (voice receive, ADPCM)
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V90K56DOCATC11A
Command Function
AT#VSP Silence detection period (voice receive, ADPCM)
AT#VSS Silence sensitivity tuner (voice receive)
AT#VTX Voice Transmit Mode (ADPCM)
AT#VBQ? Query buffer size
AT#VCI? Identify compression method (ADPCM)
AT#VRN Ringback never came timer (originate)
AT#VSK Buffer skid setting
AT#VSR Sampling rate selection (ADPCM)
AT#VTD DTMF/tone reporting capability
AT#VTS Play tone string (online voice command)
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V90K56DOCATC11A
AT Voice Command Descriptions
AT FCLASS = 8 must be issued prior to entering any other voice command.
ATA - Answering in Voice
This command works similarly to the way it works in Data and Fax Modes.
Result Code:
VCON
ATD - Dial Command in Voice
This command will perform the dial action in Voice Mode.
Result Codes:
VCON Issued in Voice Mode when the modem determines that the remote modem or handset has
gone off-hook.
NO ANSWER Issues in Voice Mode when the modem determines that the remote has not picked
up the line before the S7 timer expires.
ATH - Hang Up in Voice
This command works the same as in Data and Fax modes by hanging up the phone line.
1. This command forces the #CLS=0, but does not destroy any of the voice parameter setting such as
#VBS, #VSP, etc.
2. The #BDR setting is forced back to 0.
ATZ - Reset from Voice Mode
This command works the same as in Data and Fax modes. In addition, it will also resets all voice
related parameters to default states, forces the #BDR=0 condition, and forces the telephone line to be
selected with the handset on-hook.
+FCLASS=8 – Enter Voice Mode
This command puts the modem into the voice mode.
#BDR - Select Baud Rate (Turn off Autobaud)
These commands select a specific DTE/modem baud rate.
Parameters: n = 0 - 48 (Baud Rate = n * 2400 bps)
Default: 0
Result Codes:
OK if n is between 0 and 48
ERROR Otherwise
Command options:
#BDR? Return the current setting
#BDR=? Return a message indicating the speeds that are supported
#BDR=0 Enable autobaud detection on the DTE interface
#BDR=n Select the baud rate
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V90K56DOCATC11A
#CID - Enable Caller ID Detection and Select Reporting Format
This command enables or disables Caller ID recognition and reporting in any mode.
Parameters: n = 0, 1, or 2
Default: 0
Result Codes:
OK n = 0, 1, or 2
ERROR Otherwise
Command Options:
#CID? Return the current setting (0, 1, or 2)
#CID=? Return the message, “0-2”
#CID=0 Disables Caller ID
#CID=1 Enable formatted Caller ID reporting of SDM (Single Data Message) and MDM
(Multiple Data Message) packets.
#CID=2 Enable unformatted Caller ID reporting.
#CLS - Select Data, Fax, or Voice
This command select Data, Fax, or Voice Mode
Parameters: n=0, 1, or 8
Default: 0
Result Codes:
OK if n = 0, 1, 2, or 8
ERROR Otherwise
Command options:
#CLS? Return the current setting (0, 1, or 8)
#CLS=? Return the message, “0, 1, 8”
#CLS=0 Select Data Mode.
#CLS=1 Select Class 1 Fax Mode.
#CLS=8 Select Voice Mode.
#MDL - Identify Model
This command identifies the model number of the modem.
Command option:
#MDL? “PCT288DFV”
#MFR? - Identify Manufacturer
This command identifies the modem manufacturer.
Command option:
#MFR? “PCtel”
#REV? - Request Revision Level
This command requests the revision number of PCTEL Driver.
#REV? “PCtel 2.00”
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V90K56DOCATC11A
#RG - Record Gain Control
This command sets the record gain.
Parameters: n = 0000 - 7FFF
Default: 7FFF
Result Codes:
OK if n = 0000 - 7FFF
ERROR Otherwise
Command options:
#RG? Return the current setting
#RG=? Return the message, “0000-7FFF”
#RG=n Set the record gain to n
#SPK - Change the setting of Speakerphone
This command set the parameters for speakerphone.
Parameters: #SPK=<mute>, <spk>, <mic>
<mute> Microphone state
0 microphone mute
1 microphone on (default)
2 Room Monitor mode (mic on max. AGC, speaker off)
<spk> Speaker Output Level
Range: 0 to 15 (speaker attenuation in 2 dB steps)
Default: 5 (10 dB attenuation)
Speaker mute is achieve by a value of 16
<mic> Microphone Gain Parameter
0 0 dB
1 6 dB gain (default)
2 9.5 dB gain
3 12 dB gain
Command options:
It is not necessary to enter all three parameters,
#SPK=,<spk>,<mic>
#SPK=,,<mic>
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V90K56DOCATC11A
#TL - Transmit Level Control
This command sets the transmit level.
Parameters: n = 0000 - 7FFF
Default: 3FFF
Result Codes:
OK if n = 0000 - 7FFF
ERROR Otherwise
Command options:
#TL? Return the current setting
#TL=? Return the message, “0000-7FFF”
#TL=n Set the record gain to n
#VBQ? - Query Buffer Size
This command query the modem’s voice transmit and voice receive buffers size.
Parameters: None
Command option:
#VBQ? Return the size of buffers.
#VBS - Bits Per Sample (Compression Factor)
This command selects the degree of ADPCM voice compression to be used.
Parameters: n = 4 (Only 4 bits per sample compression ratio is supported)
Default: 4
Result Codes:
OK if n = 4
ERROR Otherwise
Command options:
#VBS? Return the current setting
#VBS=? Return “4”
#VBS=4 Selects 4 bits per samples.
#VBT - Beep Tone Timer
This command sets the duration for DTMF tone generation
Parameters: n = 0 - 40 ( duration = n /10 seconds)
Default: 10
Result Codes:
OK if n = 0 - 40
ERROR Otherwise
Command options:
#VBT? Return the current setting
#VBT=? Returns the message, “0-40”
#VBT=0 Disables the tone generation capability.
#VBT=n Sets tone duration
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V90K56DOCATC11A
#VCI? - Identify Compression Method
This command identifies the compression method used by the modem.
Parameter: None
Command option:
#VCI? Returns the message, “PCTEL; ADPCM; 32”
#VLS - Voice Device Selection
This command select which devices is routed through the modem.
Parameter: n = 0, 1, 2, 3, 4, or 6
Default: 0
Result Codes:
OK if n = 0, 1, 2, 3, 4, or 6
ERROR Otherwise
Command options:
#VLS? Return current setting
#VLS=? Return the device types supported by the modem.
#VLS=n Select Device Type (see table below)
Device Type Device Description
0 Phone Line with Telephone handset
1 Handset
2 On-Board Speaker
3 Microphone
4 Telephone line with on-board speaker ON and handset
6 Speaker Phone
#VRA - Ringback Goes Away Timer (Originate)
When originate a voice call, this command can set the “Ringback Goes Away” timer value, an
amount of time measures from when the Ringback cadence stops once detected. If Ringback is not
detected within this period, the modem assumes that the remotes has picked up the line and switches
to Online Voice Command Mode. Every time a Ringback cadence is detected, this timer is reset.
Parameters: n = 0 - 255 (0 - 25.5 seconds)
Default: 70
Result Codes:
OK if n = 0 - 255
ERROR Otherwise
Command options:
#VRA? Return the current setting
#VRA=? Return the message, “0-255”
#VRA=0 Turn off the timer. The dialing modem sends VCON and enters Online Voice
Command Mode after one Ringback.
#VRA=n Set the timer (timer = n * 0.1 seconds)
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V90K56DOCATC11A
#VRN - Ringback Never Came Timer (Originate)
When originating a voice call, this command set the “Ringback Never Came” timer value, an amount
of time measured from completion of dialing. If Ringback is not detected within this period, the
modem assumes the remote has picked up the line and switches to Online Voice Command Mode.
Parameters: n = 0 - 255 (0 - 25.5 seconds)
Result Codes:
OK if n = 0 - 255
ERROR Otherwise
Command option:
#VRN? Return the current setting
#VRN=? Return the message, “0-255”
#VRN=0 Turn off the “Ringback Never Came timer”. After dialing, the modem sends
VCON and enters Online Voice Command Mode immediately.
#VRN=n Set the timer (duration = n * 0.1 second)
#VRX - Voice Receive
This command set the modem in Voice Receive Mode.
Parameters: None
Result Codes:
CONNECT when voice transfer from modem to DTE can begin
ERROR if #VLS=0 and not connected to any input device
#VSD - Silence Deletion Tuner (Voice Receive)
This command can enable/disable Voice Receive Mode silence detection. Silence Deletion is not
supported in PCtel HSP Modem.
Parameters: n = 0
Default: 0
Result Codes:
OK if n = 0
ERROR Otherwise
Command options:
#VSD? Return current setting
#VSD=? Return the message, “0”
#VSD=0 Disable Silence Deletion
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V90K56DOCATC11A
#VSK - Buffer Skid Setting
This command queries and sets the number of bytes of spare space, after the XOFF threshold is
reached, in the modem’s buffer during Voice Transmit Mode. This equates to the “skid” spare buffer
space, or the amount of data the DTE can continue to send after being told to stop sending data by
the modem, before the modem voice transmit buffer overflows.
Parameters: n = 0 - 255
Default: 255
Result Code:
OK if n = 0 - 255
ERROR Otherwise
Command options:
#VSK? Return the current setting
#VSK=? Return the message, “0-255”
#VSK=n Set the skid buffer size to n bytes
#VSP - Silence Detection Period (Voice Receive)
This command sets the Voice Receive Mode silence detection period value. If the modem does not
receive any ADPCM data after the timer expired, it will cause the modem to send <DLE>s or
<DLE>q codes.
Parameters: n = 0 - 255 (0 - 25.5 seconds)
Default: 55
Result Code:
OK if n = 0 - 255
ERROR Otherwise
Command options:
#VSP? Return current setting
#VSP=? Return the message, “0-255”
#VSP=0 Disable the silence period detection timer
#VSP=n timer = n * 0.1 second
#VSR - Sampling Rate Selection
This command sets the audio codec-sampling rate.
Parameters: n = 8000 (8000 Hz sampling rate)
Default: 8000
Result Codes:
OK if n = 8000
ERROR Otherwise
Command options:
#VSR? Return the current setting
#VSR=? Return the message, “8000”
#VSR=8000 Set the sample rate to 8000
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V90K56DOCATC11A
#VSS - Silence Sensitivity Tuner (Voice Receive)
This command set the sensitivity in Voice Receive Mode silence detection.
Parameters: n = 0 - 3
Default: 2
Result Codes:
OK if n = 0 -3
ERROR Otherwise
Command options:
#VSS? Return current setting
#VSS=? Return the message, “0-3”
#VSS=0 Disable silence detection by the modem in Voice Receive Mode
#VSS=1 Least sensitive setting
#VSS=2 Medium sensitive setting
#VSS=3 Most sensitive setting
#VTD - Tone Reporting Capability
This command sets which types of tones can be detected and reported to the DTE via shielded codes
in Voice Transmit, Voice Receive, and Online Voice Command Modes.
Parameters: i, j, k
Default: 3F, 3F, 3F
Result Codes:
OK if setting is supported by the modem.
ERROR Otherwise
Command options:
#VTD? Return current setting
#VTD=? Returns the tone reporting capabilities of the modem.
#VTD=i,j,k Where i, j, k corresponds to the desired capabilities (see table below), i for
Voice Transmit, j for Voice Receive, and k for Online Voice Command Modes.
Bit Description
0 0 / 1 = Disable / Enable DTMF tone capability
1 0 / 1 = Disable / Enable V.25 1300 Hz Calling tone capability
2 0 / 1 = Disable / Enable V.30 1100 Hz Facsimile Calling tone capability
3 0 / 1 = Disable / Enable V.25/T.30 2100 Hz Answer tone capability
4 0 / 1 = Disable / Enable Bell 2225 Hz Answer tone capability
5 0 / 1 = Disable / Enable call progress tone and cadence tone capability
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V90K56DOCATC11A
#VTS - Play Tone String (Online Voice Command Mode)
This command can play one or more DTMF or other tones. No key abort is allowed.
Dual or Single Tones: These are represented by a substring enclosed in square brackets (“[ ]”)
within the parameter. Each such substring consists of three sub-elements corresponding to 2
frequencies in Hertz (0, or 2000-3000) and a duration (ASCII decimal in units of 100ms).
Varying DTMF Digits: This is represented by a substring enclosed in curly braces (“{ }”) within the
parameter. Each such substring consists of two sub-elements corresponding to a DTMF digits (0-9,
A-D, *, #), and alternate duration in units of 100ms.
Parameters: The tone generation consists of elements in a list with each element separated by
commas. Result Codes:
OK Command to play tones on currently selected device is accepted.
ERROR Command was not issued in Online Voice Command Mode or string is
grammatically incorrect.
#VTX - Voice Transmit
This command set the modem in Voice Transmit Mode. The #VLS command should have been
previously issued correctly.
Parameters: None
Result Codes:
CONNECT when voice transmission by DTE can begin.
ERROR If #VLS=0 and output device is not connected.
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V90K56DOCATC11A
Shielded Codes
Code Sent to DTE Meaning
<DLE>0 - <DLE>9,
<DLE>*, <DLE>#,
<DLE>A - <DLE>D
DTMF
Digits 0 through 9, *, #, or A through D detected by the modem.
<DLE>a Answer Tone(CCITT)
Sent to the DTE when the V.25/T.30 2100 Hz Answer Tone (Data or
Fax) is detected. If the DTE fails to react to the code, and the modem
continues to detect Answer tone, the code is repeated as often as once
every 0.5 second.
<DLE>b Busy
Sent to DTE when the busy cadence is detected. The modem sends the
busy <DLE>b code every 4 seconds if busy continues to be detected and
the DTE does not react. This allows the DTE the flexibility of ignoring
what could be a false busy detection.
<DLE>c Calling Tone
Sent when the T.30 1100 Hz Calling Tone (Fax Modem) is detected.
The modem assumes the calling tone is valid and sends this code only
after 4 seconds of proper cadence has been detected. If the DTE does not
react to this code, the code is repeated as often as once every 4 seconds.
<DLE>d Dial Tone
Sent in Voice Receive Mode when dial tone is detected after any
remaining data in the voice receive buffer. The modem sends this code
every 3 seconds if dial tone continues to be detected and the DTE does
not react. This allows the DTE the flexibility of ignoring what could be
false dial tone detection.
<DLE>e European Data Modem Calling Tone
Sent when the V.25 1300 Hz Calling Tone (Data Modem) is detected.
The modem assumes that the calling tone is valid, and sends this code
only after 4 seconds of proper cadence has been detected. If the DTE
does not react to this code and calling tone continues, the code is sent
again as often as once every 4 seconds.
<DLE>f Bell Answer Tone
Sent when Bell 2225 Hz Answer Tone (Data) is detected. If the DTE
fails to react to the code and the modem continues to detect Answer
tone, the code is repeated as often as every 0.5 second.
<DLE>h Hung Up Handset
Sent immediately when the modem detects that the local handset has
hung-up.
<DLE>q Quiet
Sent in Voice Receive Mode after any remaining data in the receive
voice buffer when the silence detection timer (#VSP) expires and the
voice data has been passed to the DTE.
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V90K56DOCATC11A
<DLE>s Silence
Sent in Voice Receive Mode after the silence detection timer (#VSP)
expires and if valid voice has not been detected (#VSS).
<DLE>t Handset Off-Hook
Sent one time when the local handset transition goes off-hook.
<DLE><ETX> End of Stream
This code is sent to denote the end of a voice data stream.
Shielded Codes (Continued)
Code Sent to
Modem
Meaning
<DLE><ETX> Terminate
Sent during Voice Transmit Mode to indicate that the DTE has finished
transmitting a voice message. The Modem completes transmission of
any remaining data in the voice transmit buffer before responding with
the VCON message and entering Online Voice Command Mode.
<DLE><CAN> Cancel
Sent during Voice Transmit Mode to indicate that the DTE has finished
transmitting a voice message and wants the modem to discard any
remaining data in the voice transmit buffer. The modem immediately
purges its buffer and then responds with VCON message entering
Online Voice Command Mode.
<DLE>p Pause
Sent during Voice Transmit Mode to force the modem to suspend
sending voice data to the selected output device. Any data currently in
the voice transmit buffer is saved until either a resume (<DLE>r), or
cancel (<DLE><CAN>), is received, in which case the data is lost. If a
<DLE><ETX> is received during the paused state, the modem processes
it normally, and also automatically resumes transmission of the data left
in the buffer (appended with <DLE><ETX>). Any other data received
from the DTE while in this paused state is placed in the transmit buffer
according to available space, with flow control active.
<DLE>r Resume
Sent during Voice Transmit Mode to force the modem to resume
sending voice data to the selected output device. Any data currently in
the voice transmit buffer is now played.
39
AT Command Guide
V90K56DOCATC11A
PTT Testing
This facilitates testing of signal levels and provides a continuous signal when the modem is in IDLE
mode. This allows the user to initiate a series of signal that are necessary for PTT approval. These
signals are answer tone, carriers, modulation, and other pertinent signals. A selected test will be
terminated when any keyboard character is entered. The followings are command descriptions.
Note: For DTMF, the transmit level is -10dBm for low band and -8dBm for high band, inter digit
delay is fixed at 70ms. All other transmit levels are adjustable according to the setting of register
S91 (from -10 to -15dBm).
%P00 - %P09 DTMF tone digits from 0 to 9.
%P10 DTMF digit A.
%P11 DTMF digit B.
%P12 DTMF digit C.
%P13 DTMF digit D.
%P14 DTMF digit *.
%P15 DTMF digit #.
%P16 V.21 Channel 1 mark 980 Hz.
%P17 V.21, Channel 2 mark 1650 Hz.
%P18 V.23, Reversed channel mark 390 Hz.
%P19 V.23, Forward channel mark 1300 Hz.
%P20 V.22 Originate.
%P21 V.22bis, originateOriginate.
%P22 V.22, Answer.
%P23 V.22bis, Answer.
%P24 V.21, Channel 1 space 1180 Hz.
%P25 V.21, Channel 2 space 1850 Hz.
%P26 V.23, Reversed channel space 450 Hz.
%P27 V.23, Forward channel space 2100 Hz.
%P28 V.32, at 9600 bps.
%P29 V.32bis, 14400 bps.
%P30 Silence, off-hook.
%P31 V.25 Answer tone, 2100 Hz.
%P32 Guard tone, 1800 Hz.
%P33 V.25 Calling tone, 1300 Hz.
%P34 Fax calling tone, 1100 Hz.
%P35 V.21 Channel 2, 1650 Hz.
%P36 V.27ter, 2400 bps.
%P37 V.27ter, 4800 bps.
%P38 V.29, 7200 bps.
%P39 V.29, 9600 bps.
%P40 V.17, 7200 bps long train.
%P41 V.17, 7200 bps short train.
%P42 V.17, 9600 bps long train.
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AT Command Guide
V90K56DOCATC11A
%P43 V.17, 9600 bps short train.
%P44 V.17, 12000 bps long train.
%P45 V.17, 12000 bps short train.
%P46 V.17, 14400 bps long train.
%P47 V.17, 14400 bps short train.
%P48 V.34, 2400 bps modulation.
%P49 V.34, 4800 bps modulation.
%P50 V.34, 7200 bps modulation.
%P51 V.34, 9600 bps modulation.
%P52 V.34, 12000 bps modulation.
%P53 V.34, 14400 bps modulation.
%P54 V.34, 16800 bps modulation.
%P55 V.34, 19200 bps modulation.
%P56 V.34, 21600 bps modulation.
%P57 V.34, 24000 bps modulation.
%P58 V.34, 26400 bps modulation.
%P59 V.34, 28800 bps modulation.
%P60 V.32bis, 9600 bps modulation.
%P61 V.32bis, 12000 bps modulation.
%P62 Bell 212A, originate 1200 bps
%P63 Bell 212A, answer 1200 bps
%P64 Bell 103, originate mark 1270 Hz
%P65 Bell 103, originate space 1070 Hz
%P66 Bell 103,-answer mark 2225 Hz
%P67 Bell 103,-answer space 2025 Hz
%P68 V.34, 31200 bps modulation.
%P69 V.34, 33600 bps modulation.
%P70 V.32, 4800bps
%P71 V.32bis, 4800bps
%P72 V.32bis, 7200bps
%P73 V.21 Channel 1, "10101010 ..." pattern generation
%P74 V.21 Channel 2, "10101010 ..." pattern generation
%P75 Bell 103 originate, 1270Hz 1070Hz "10101010 ..." pattern generation,
%P76 Bell 103 answer mark, 2225Hz answer space 2025Hz "10101010 ..." pattern
%P99, n where 0<= n <=23
f(Hz) = n * (150Hz)
n f(Hz)
0 0 modem goes off hook and reports
power level of incoming signal if present
1 150
2 300
3 450
4 600
5 750
6 900
7 1050
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AT Command Guide
V90K56DOCATC11A
8 1200
9 1350
10 1500
11 1650
12 1800
13 1950
14 2100
15 2250
16 2400
17 2550
18 2700
19 2850
20 3000
21 3150
22 3300
23 3450
42
AT Command Guide
V90K56DOCATC11A
Default Country Specific Profiles
JAPAN
B0 E1 L1 M1 N1 P Q0 V1 W1 X4 Y0 &C1 &D2 &G0 &K3 &P0 &S0 &U0 &Y0 %C3
%E2 %N0 \A1 \B3 \G0 \K5 \L0 \N3 *Q0 -V90=1
S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=004 S07=055
S08=004 S09=006 S10=014 S11=075 S12=050 S13=000 S14=000 S15=000
S16=000 S17=000 S18=000 S19=000 S20=000 S21=000 S22=000 S23=000
S24=000 S25=005 S26=000 S27=000 S28=000 S29=000 S30=000 S31=000
S32=017 S33=019 S34=021 S35=000 S36=000 S37=000 S38=020 S39=000
S40=000 S41=000 S42=000 S43=000 S44=000 S45=010 S46=000 S47=000
S48=000 S82=000 S86=099 S91=015
USA
B1 E1 L1 M1 N1 T Q0 V1 W0 X4 Y0 &C0 &D0 &G0 &K3 &P2 &S0 &U0 &Y0 %C3
%E2 %N0 \A1 \B3 \G0 \K5 \L0 \N3 *Q0 -V90=1
S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07=065
S08=002 S09=006 S10=014 S11=095 S12=050 S13=000 S14=000 S15=000
S16=000 S17=000 S18=000 S19=000 S20=000 S21=000 S22=000 S23=000
S24=000 S25=005 S26=000 S27=000 S28=000 S29=000 S30=000 S31=000
S32=017 S33=019 S34=021 S35=000 S36=000 S37=000 S38=020 S39=000
S40=000 S41=000 S42=000 S43=000 S44=000 S45=010 S46=000 S47=000
S48=000 S82=000 S86=099 S91=011
43
AT Command Guide
V90K56DOCATC11A
KOREA
B1 E1 L1 M1 N1 T Q0 V1 W0 X4 Y0 &C1 &D0 &G0 &K3 &P2 &S0 &U0 &Y0 %C3
%E2 %N0 \A1 \B3 \G0 \K5 \L0 \N3 *Q0 -V90=1
S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07=050
S08=002 S09=006 S10=014 S11=095 S12=050 S13=000 S14=000 S15=000
S16=000 S17=000 S18=000 S19=000 S20=000 S21=000 S22=000 S23=000
S24=000 S25=005 S26=000 S27=000 S28=000 S29=000 S30=000 S31=000
S32=017 S33=019 S34=021 S35=000 S36=000 S37=000 S38=020 S39=000
S40=000 S41=000 S42=000 S43=000 S44=000 S45=010 S46=000 S47=000
S48=000 S82=000 S86=099 S91=015
CHINA
B1 E1 L1 M1 N1 T Q0 V1 W0 X4 Y0 &C0 &D0 &G0 &K3 &P2 &S0 &U0 &Y0 %C3
%E2 %N0 \A1 \B3 \G0 \K5 \L0 \N3 *Q0 -V90=1
S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07=050
S08=002 S09=006 S10=014 S11=095 S12=050 S13=000 S14=000 S15=000
S16=000 S17=000 S18=000 S19=000 S20=000 S21=000 S22=000 S23=000
S24=000 S25=005 S26=000 S27=000 S28=000 S29=000 S30=000 S31=000
S32=017 S33=019 S34=021 S35=000 S36=000 S37=000 S38=020 S39=000
S40=000 S41=000 S42=000 S43=000 S44=000 S45=010 S46=000 S47=000
S48=000 S82=000 S86=099 S91=011
CTR21 (Europe)
B1 E1 L1 M1 N1 T Q0 V1 W0 X4 Y0 &C0 &D0 &G0 &K3 &P0 &S0 &U0 &Y0 %C3
%E2 %N0 \A1 \B3 \G0 \K5 \L0 \N3 *Q0 -V90=1
S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=004 S07=050
S08=002 S09=006 S10=014 S11=095 S12=050 S13=000 S14=000 S15=000
S16=000 S17=000 S18=000 S19=000 S20=000 S21=000 S22=000 S23=000
S24=000 S25=005 S26=000 S27=000 S28=000 S29=000 S30=000 S31=000
S32=017 S33=019 S34=021 S35=000 S36=000 S37=000 S38=020 S39=000
S40=000 S41=000 S42=000 S43=000 S44=000 S45=010 S46=000 S47=000
S48=000 S82=000 S86=099 S91=011
