USRobotics
       

Contents:

Welcome to 56K Information Access

Product Features

Installation for All Operating Systems

Troubleshooting

Technical Reference >

Introduction to Syntax and Procedures

Data Command Set

Result Codes

Glossary

Regulatory Information

Limited Warranty

Data Command Set

Command Summary

  • Type commands in either upper or lower case, not a combination. Use the Backspace key to delete errors. (You cannot delete the original AT command since it is not stored in the modem buffer.)
  • If a command has numeric options and you don't include a number, zero is assumed. For example, if you type ATB, the command ATB0 is assumed.
  • Every command except A/ and +++ must begin with the AT prefix and be entered by pressing <Enter>
  • The maximum command length is 58 characters. The modem doesn't count the AT prefix, carriage returns, or spaces.

Data Commands

The modem will respond to the commands detailed below. Parameters applicable to each command are listed with the command description. The defaults shown for each configuration command are those used in the USRobotics factory profile 0.

Generic Modem Control

Z - Soft Reset and Restore Profile

This command causes the modem to perform a soft reset and restore (recall) the configuration profile. If no is specified, zero is assumed.

Syntax

Z<value>

Defined Values

<value> Decimal number corresponding to the selected profile.

0
 Soft reset and restore stored profile 0.
1
 Soft reset and restore stored profile 1.

Result Codes

OK
 0 or 1.
ERROR
Otherwise.

+FCLASS - Select Active Service Class

This command selects the active service class (mode).

Syntax

+FCLASS=<mode>

Defined Values

<mode> Decimal number which corresponds to the selected service class.

0
 Select Data Mode (Section 3). (Default.)
1
 Select Facsimile Class 1 Mode. (Section 4).
1.0
Select Facsimile Class 1.0 Mode. (Section 4).
2
 Select Facsimile Class 2 Mode. (Section 5).
8
 Select Voice Mode. (Section 6).
10
Reserved.

Result Codes

OK
For = 0, 1, 1.0, 2, 8, and 10
ERROR
 Otherwise.

Reporting Current or Selected Values

Command:
+FCLASS?
Response:
+FCLASS: <mode>
Example:
 +FCLASS: 0 For the default setting.

Reporting Supported Range of Parameter Values

Command:
+FCLASS?
Response:
+FCLASS: (<mode> range)
Example:
 +FCLASS: (0,1,1.0,2,8,10)

+VCID - Caller ID (CID)

This command controls the reporting and presentation of data associated with the Caller ID services in the Incoming Call Line ID (ICLID) data format for the next call.

Syntax

+VCID=<pmode>

Defined Values

<pmode> Decimal number corresponding to the selected option.

0
Disable Caller ID reporting. (Default.)
1
Enables Caller ID with formatted presentation to the DTE. The modem presents the data items in a <Tag><Value> pair format. The expected pairs are date, time, name, and caller code (telephone number),
2
Enables Caller ID with unformatted presentation to the DTE.

Reporting Current or Selected Values

Command:
+VCID?
Response:
 +VCID: <pmode>
Example:
 +VCID: 0 For the default setting.

Reporting Supported Range of Parameter Values

Command:
+VCID?
Response:
 +VCID: (<pmode> range)
Example:
 +VCID: (0-2)

+VRID - Report Retrieved Caller ID (CID)

This command reports the data associated with the Caller ID services in the Incoming Call Line ID (ICLID) data format for the last received call.

Syntax

+VRID=<pmode>

Defined Values

<pmode> Decimal number corresponding to the selected option.

0
Reports Caller ID with formatted presentation to the DTE. The modem presents the data items in a <Tag><Value> pair format. The expected pairs are date, time, name, and caller code (telephone number),
1
 Reports Caller ID with unformatted presentation to the DTE.

Reporting Supported Range of Parameter Values

Command:
+VRID?
Response:
 +VRID: (<pmode> range)
Example:
 +VRID: (0,1)

I - Identification

This command causes the modem to reports the requested result according to the command parameter.

Syntax

I<value>

Defined Values

<value> Decimal number corresponding to the selected information.

 

0
 Display Product Code.
1
 Display results from the ROM checksum.
2
 Display results from the RAM test.
3
 Display product ID and version USRobotics 56K FAX EXT V0.7.0
4

Display current modem settings.

Example: 

USRobotics 56K Faxmodem EXT Settings...

B1 E1 L1 M1 Q0 T V1 X1 &A1 &C1 &D2 &H0 &I0 &K1 &M4 &R1 &S0 &Y0 Y0 S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:050 S08:002 S09:006 S10:014 S11:055 S27:073 S32:000

LAST DIALED #:

5

Display NVRAM settings.

Example:

USRobotics 56K FAX EXT NVRAM Settings...

Template Y0:

B1 E1 L1 M1 Q0 T V1 X4 &A0 &C1 &D2 &H1 &I0 &K1 &M4 &R2 &S0 &Y0 Y0 S00:000 S02:043 S06:002 S07:050 S08:002 S09:006 S10:014 S11:055 S12:050

Template Y1:

B1 E1 L1 M1 Q0 T V1 X4 &A0 &C1 &D2 &H1 &I0 &K1 &M4 &R2 &S0 &Y0 Y0 S00:000 S02:043 S06:002 S07:050 S08:002 S09:006 S10:014 S11:055 S12:050

TELEPHONE NUMBERS:
0= 1=
2= 3=

6

Display Dial diagnostics summary of the last call.

Example:

USRobotics 56K FAX EXT Link Diagnostics...

TERMINATION REASON.......... NONE
LAST TX rat................ N/A
HIGHEST TX rate............. 300 BPS
LAST RX rate................ N/A
HIGHEST RX rate............. 300 BPS
PROTOCOL................... N/A
COMPRESSION................. N/A
Line QUALITY................ 255
RxLEVEL.................... 215
Highest Rx State............ 00
Hghest TX State............ 00
EQM Sum..................... FFFF
RBS Pattern................. FF
Rate Drop................... FF
Digital Loss............... None
Local Rtrn Count............ 00
Remote Rtrn Count........... 00

7

Display product configuration information.

Example:

Configuration Profile...

Product type UK External
Product ID 245630C00
Options V32bis,V.80,V.34+ ,V.90,V.92
Fax Options Class 1/Class 2
Line Options Caller ID, Distinctive Ring
Clock Freq 28.2Mhz
EPROM 256k
RAM 32K
FLASH date 2/16/2001
FLASH rev 0.7.0
DSP rev 28.0

+GCAP - Request Complete Capabilities List

This extended-format command causes the modem to transmit one or more lines of information text listing additional capabilities command +<names>s , which is intended to permit the user to identify the overall capabilities of the modem. In particular, if the modem implements a particular modem control standard that uses Extended Syntax Commands, and if that modem control standard includes command(s) that indicate general capabilities, the +<names>(s) of those commands will be reported to the modem in response to a +GCAP command.

Syntax

+GCAP

Example Responses

+GCAP: +FCLASS, +MS, +ES, +DS, for a data modem that supports all capabilities listed

Where:

+FCLASS
 T.class1, +F (Class 1 Facsimile modem Control)
+MS

+M commands (Modulation Control: +MS and +MR commands)
+ES
 +E commands (Error Control: +ES, +EB, +ER, +EFCS, +ETBM)
+DS
 +D commands (Data Compression: +DS and +DR)

+GCI - Country of Installation

This extended syntax command selects and indicates the country of installation for the modem. This parameter selects the settings for any operational parameters that need to be adjusted for national regulations or telephone networks.

Syntax

+GCI=<country_code>

Defined Values

<country_code> 8-bit country code from Annex A of T.35. The value is the hexadecimal equivalent of the T.35 code, with bit 8 treated as the most significant bit and bit 1 treated as the least significant bit.

The supported countries are:

Country
Code
Country
Code
Country
Code
Austria 0A Hungary 51 Norway 82
Belgium 0F Iceland 52 Poland 8A
Cyprus 2D Ireland 57 Portugal 8B
Czech and Slovak Federal Republic 2E Israel 58 Spain A0
Denmark 31 Italy 59 Slovakia FB
Estonia F9 Latvia F8 Slovenia FC
Finland 3C Liechtenstein 68 Sweden A5
France 3D Lithuania F7 Switzerland A6
Germany 42 Luxembourg 69 Turkey AE
Greece 46 Malta B4 United Kingdom B4
    Netherlands 7B    

Default

If the modem is specified for use in only one country, that country code is the default. Otherwise, the default is defined by the OEM. Factory default is B5 (United States).

Reporting Current or Selected Values

Command:
+GCI?
Response:
 +GCI: <current country_code>
Example:
 +GCI: 3D The modem is set for France.

Reporting Supported Range of Parameter Values

Command:
+GCI=?
Response:
 +GCI: (<current country_code>[<country_code>[<country_code] ]]
Example:
 +GCI: (20,73,B5) The modem can be set for Canada, Mexico or the United States.

&A - Select ARQ Result Codes

Selects additional status to be displayed with the connect message in modes X1 through X6 based on the parameter given.

Syntax

&A[<value>]

0
 No /ARQ or /Protocol
1
 /ARQ suffix added to connect message for X1 through X6 modes


Default
1

Result Codes

OK
 <value> = 0 or 1
ERROR
Otherwise.

&F - Restore Factory Configuration (Profile)

The modem loads the factory default configuration (profile). The factory defaults are identified for each command and in the S-Parameter descriptions. A configuration (profile) consists of a subset of S-Parameters.

Syntax

&F[<value>]

Defined Values

<value> Decimal number corresponding to the selected configuration.

0
 Factory Profile 0
1
 Factory Profile 1
2
 Factory Profile 2

Result Codes

OK
 <value> = 0, 1 or 2
ERROR
 Otherwise, or If the modem is connected.

&T - Local Analog Loopback Test

The modem will perform the local analog loopback test if &T1 is selected. The test can be run only when in an asynchronous operation in non-error-correction mode (normal), e.g., AT&Q6. To terminate the test in progress, the escape sequence must be entered first (see Section 3.1.1).

Syntax

&T[<value>]

Defined Values

<value> Decimal number corresponding to the selected option.

0
 Terminates test in progress. Clears S16.
1
 Initiates local analog loopback, V.54 Loop 3. Sets S16 bit 0. If a connection exists when this command is issued, the modem hangs up. The CONNECT XXXX message is displayed upon the start of the test.

&W - Store Current Configuration

Saves the current (active) configuration (profile), including S-Parameters, in one of the two user profiles in NVRAM as denoted by the parameter value. This command will yield an ERROR message if the NVRAM is not installed or is not operational as detected by the NVRAM test.

The current configuration is comprised of a list of storable parameters illustrated in the &V command. These settings are restored to the active configuration upon receiving a Zn command or at power up (see &Yn command).

Syntax

&W<value>

Defined Values

<value> Decimal number corresponding to the selected profile.

0
 Store the current configuration as profile 0.
1
 Store the current configuration as profile 1.

Result Codes

OK
 <value> = 0 or 1
ERROR
 Otherwise

&Z - Write Dial String to NVM

Dial String selected by parameter written to NVM. Parameter is 0 through 3. Last dialed number can be stored to selected dial string by &Zn=L.

Syntax

&Z<value>

Query options:

&Z query commands will cause the selected dial string to be transmitted to the DTE as <cr><lf> Dial String <cr><lf> . (see below)

&Zn? will transmit the current contents of the dial string to the DTE.
&ZL? will transmit the last dialed number to the DTE.

Defined n Values

<value> Decimal number corresponding to the selected Dial String to be stored.

0
 Store Dial String 0.
1

Store Dial String 1.
2
 Store Dial String 2.
3

Store Dial String 3.

Example:

AT&Z0=0018473303221<Enter> would store **0018473303221 into &Z Dial String 0 template.
** The number used is not in service, and if in service at any time, is only meant here as an example.

Result Codes

OK
 <value> = 0, 1, 2 or 3
OK
 <value> = 0, 1 or 2
ERROR
 Otherwise, or If the modem is connected.