Lucent Technologies Host-Based Controller Modem AT specifications AT Commands Reference

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Transmit carrier always off. Normal transmit carrier switching.
n = 1

Host-Based Controller Modem

Data Addendum

AT Command Set

June 15,

1998

 

 

 

AT Commands Reference

AT commands are issued to the modem to control the modem's operation and software configuration. AT commands can only be entered while the modem is in command mode. The format for entering AT commands is:

TYPE:

ATXn

where X is the AT command and n is the specific value for that

command.

 

 

PRESS:

Enter

If n is omitted from a command that takes a parameter valu, the

value 0 I(zero)

 

 

is assumed.

Any command issued is acknowledged with a response in either text or numeric values known as result codes. Table 2 lists all the valid result codes.

In the following listing, all commands and command-values accepted by the modem are shown; any entries other than those shown cause the ERROR result code.

+++ Escape sequence

The escape sequence allows the modem to exit data mode and enter on-line command mode. While in on-line command mode, you may communicate directly to your modem using AT commands. Once you are finished, you may return to data mode using the ATO command.

A pause, the length which is set by the Escape Guard Time (S12), must be used before and after an escape sequence is issued. This pause prevents the modem from interpreting the escape sequence as data.

The value of the escape sequence character may be changed using Register S2.

A/

Repeat Last Command

This command repeats the last command string entered. Do not precede this command with an AT prefix or conclude it by pressing Enter.

A

Answer Command

This command instructs the modem to go off-hook and answer an incoming call.

Bn

Communication Standard Setting

This command determines CCITT vs. Bell standard.

B0:

Selects CCITT V.22 mode when the modem is at 1200 bits/s.

B1:

Selects Bell 212A when the modem is at 1200 bits/s (default).

B2:

Unselects V23 reverse channel (same as B3 ).

B3:

Unselects V23 reverse channel (same as B2 ).

B15:

Selects V.21 when the modem is at 300 bits/s.

B16:

Selects Bell 103J when the modem is at 300 bits/s (default).

Result Codes:

 

 

OK

 

n = 0, 1, 2, 3, 15, 16

ERROR

Otherwise

Cn

Carrier Control

 

The modem will accept the C1 command without error in order to assure backward compatibility with communications software that issues the C1 command. However, this modem does not support the C0 command. The C0 command may instruct some other modems not to send carrier (i.e., it puts them in a receive- only mode).

C0:

C1:

Result Codes:

OK

ERROR Otherwise

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Lucent Technologies Inc.

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Contents Contents IntroductionAT Command Summary AT Command Set Summary DescriptionAT Testing and Debugging Command Set Summary Description S-Register Summary Default Description#UD Result Code Summary NoEC-No error control protocol AT Commands Reference Echo Command Online Data Character Echo CommandDnDial Otherwise Hook Control Request ID InformationMars Lapm Monitor Speaker Volume Monitor Speaker ModeModulation Handshake Result Code Control Return On-line to Data ModeSelect Pulse Dialing VnDCE Response FormatExt. Result Code Dial Tone Detect Busy Tone Detect Result Code OptionResult Code Selection and Call Progress Monitoring Extended Result CodesRecall Stored Profile OK ErrorLong Space Disconnect Auto RetrainGn V.22bis Guard Tone Control Fn Load Factory SettingsDn DTR Control Auxiliary Relay optionLocal Flow Control Selection Asynchronous Communications ModeQn Asynchronous Communications Mode Pulse Dial Make-to-Break Ratio SelectionSelf-Test Commands Connect ErrorData Set Ready DSR Option View Active Configuration and Stored Profile SSEZn=x Store Telephone Number Store Current ConfigurationYnSelect Stored Profile for Hard Reset \AnBits/s Rate Adjusted \Nn Error Control Mode Selection\Kn Break Control \N3 \Xn XON/XOFF Pass Through \Tn Inactivity Timer\Vn Protocol Result Code Data Calling ToneView Numbers in Blacklist En Enable/Disable Auto-Retrain and Fallback/Fall Forward Cn Data Compression ControlTest and Debug AT Commands Diag AT#UD Last Call Status Report FormatCall Setup Result Codes GstnModulationSchemeActive from 3.7.2/V.58CallCleared codes from 3.6.4/V.58-1994 ErrorControl Active from 3.5.2/V.58 Value DescriptionCompressionActive from 3.2.2/V.58 Value Description Value Description ImplementedDteHangupCommand Auto Answer Ring Number AT Commands Reference S-RegistersS3Command Line Termination Character user defined AT Escape Character user definedCommand Line Editing Character user defined Response Formatting Character user definedConnection Completion Time-Out S11 Comma Dial Modifier TimeS10 S12 Escape Guard TimeS22 Results Bit Mapped Options Status S24 Timer to Control Sleep ModeS21 24/General Bit Mapped Options Status S28S33 Synthetic Ring Frequency S30 Inactivity TimerS32 Synthetic Ring Volume S35S42 Auto Rate default 1, range 0 ¾1 S38 K56flex Downstream RateS48 S48 = S43 Auto Mode default 1, range 0¾1S48 Lapm Error Control and Feature Negotiation default S89AT FAX Command Set Class 1 FAX AT FAX Command Set SummaryCommand Description AT FAX Commands Reference Command Option Modulation Speed bits/s +FTM=m Transmit FAX Data with m Carrier+FRM=m Receive FAX Data with m Carrier +FTH=m Transmit Hdlc Data with m Carrier +FRH=m Receive Hdlc Data with m CarrierFPR Result Lucent Data/Fax +FAA Adaptive answerManufacturer Identification +FMI Product Identification +FMMVoice Commands AT Voice Command SetAT Voice Command Set AT Voice Command Set Not Defined In IS-101 SpecificationAT Voice Commands Reference AT+VEM=mask Event Reporting and Masking AT+VIT = Timer DTE/DCE Inactivity TimerAT+VGR=gain AT+VNH = Hook Automatic Hang-up ControlAT+VTS=string AT+VLS=label Analog Source/Destination SelectionAT+VTD=dur Start voice transmission and reception processAT+VSD=sds, sdi Silence Detection Quiet and Silence AT+VSM?AT+VSM=? AT+VPR=rate Select DTE/DCE Interface Rate AT+VRA=interval Ringback Goes Away TimerAT+VRN=interval Ringback Never Appeared Timer Events Reported to the DTEAT+VTS= DLE H ATDAT+VLS=7 AT+VLS=5ATH Example # 2 Initiating a stored number speakerphone call AT+FCLASS=1 Example # 3 Answering a speakerphone callRing ATAConnect Example # 6 Switching from speakerphone mode to TAD modeAT+FCLASS=0 AT+VLS=1DLE-R Modem answers call AT Dsvd Commands Manufacturer Identification +GMI? 25ter AT Commands25ter AT Commands Version / Revision Information +GMR?V8o, v8a, and v8cf AT Commands +ES?+ES=? +ITF= off, on Idle,,,crctype,nrzien+ESA=? +ITF=?AT Commands for Homologation Testing and Debugging Version Country Codes CountryCode in HEX USAAT%T21,par#,paramvalue Pulse dial make time 255 ATB ATA, ATDATD , ATX ATH1Homologation Parameters Par # Parameter Description Range ReferenceVersion 150 255 100 120 255 0x00 0x12 0x10 0x88 0x80 0x06 0x0c 0x6b 0xaa Par. # Australia Belgium Denmark Finland France Germany 120 100 255 0x10 0x12 Par. # Netherlands Italy Norway Spain150 100 250 255 0x12 0x10 0x00 0x88 0x06 0x0c 0x80 Par. # Austria Japan China Korea Malaysia Singapore 150 250 255 Portugal Hong Kong 150 255 Version Par. # Canada Mexico India Vietnam Philippines 000 004 002 050 140 S10 020 S11 095 090 S30 S35 001 000 003 002 004 035 050 S10 020 S11 095 090 S30 S35 001 OK ATZ OK ATS11? 085 OK ATZXX-XXXDMOD

Host-Based Controller Modem AT specifications

Lucent Technologies Host-Based Controller Modem AT represents a significant advancement in modem technology, particularly in the realm of telecommunications and data transmission. This modem, renowned for its efficiency and versatility, is characterized by a host-based architecture, which differentiates it from traditional modems that rely heavily on dedicated hardware.

One of the main features of the Lucent Technologies Host-Based Controller Modem AT is its ability to leverage the processing power of the host computer. By utilizing the host's CPU for data encoding and decoding tasks, the modem can reduce the need for specialized hardware components, allowing for a more cost-effective solution. This design not only facilitates lower manufacturing costs but also enhances the overall performance due to the utilization of the host's computational capabilities.

Another notable characteristic is its compliance with the AT command set, which standardizes communications between the modem and the host system. This ensures compatibility with a wide range of software applications and operating systems. The AT command set allows users to control modem functions easily, making it simpler to configure settings, initiate connections, and manage data transfer processes.

The modem also supports various communication protocols, such as V.90 and V.92, enabling high-speed data transmission over traditional telephone lines. With download speeds of up to 56 Kbps and upload speeds of up to 48 Kbps, the Lucent Technologies Host-Based Controller Modem AT is particularly suitable for Internet browsing, email, and other online activities demanding robust data throughput.

Additionally, the modem features built-in error correction and data compression protocols, such as V.42 and V.44, further enhancing the quality and speed of data transmission. These protocols help minimize the impact of line noise and ensure efficient use of bandwidth, leading to improved connection stability and data integrity.

In terms of connectivity, the Lucent Technologies Host-Based Controller Modem AT typically interfaces via a standard serial or USB port, making it compatible with most modern computers. Its compact design and ease of installation make it an appealing choice for both personal and professional use.

Overall, the Lucent Technologies Host-Based Controller Modem AT showcases significant innovation in modem technology, offering users a reliable and efficient solution for high-speed data communications. Its host-based architecture, adherence to the AT command set, and support for advanced communication protocols position it as a vital tool in the ever-evolving landscape of digital connectivity.
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