Lucent Technologies Host-Based Controller Modem AT specifications At+Vsm?, At+Vsm=?

Page 46

Host-Based Controller Modem

Data Addendum

AT Command Set

June 15, 1998

 

 

AT Voice Commands Reference (continued)

 

AT+VLS=? Analog Source/Destination Selection and DTMF/Tone Reporting

 

Requests for the modem's DTMF/Tone reporting capabilities are made using this command. For each system configuration in voice mode (i.e., speakerphone and answering machine), the modem reports the capabilities that are enabled for the configuration.

Also, for each configuration, the modem indicates tone-reporting capabilities for each of the three different voice states: voice transmit data, voice receive data, and voice command state (voice idle).

TAD supports each of the following IS-101 analog source/destination configurations:

Label #

Description

0DCE on-hook, local phone connected to Telco.

1DCE off-hook, DCE connected to Telco.

2DCE off-hook, local phone connected to DCE.

3DCE off-hook, local phone connected to Telco, DCE to local phone.

4Speaker connected to DCE, DCE on-hook (playback messages)

5Speaker connected to DCE, DCE off-hook (call screening)

6Microphone connected to DCE, DCE on-hook (record greeting)

7Microphone and speaker connected, DCE off-hook (speakerphone)

AT+VSD=<sds, sdi> Silence Detection (QUIET and SILENCE)

This command sets both the silence detection sensitivity (<sds>) and silence detection interval (<sdi>).

■Larger values of <sds> indicate that the modem is to treat noisier line conditions as silence. <sds> = 128 ; Nominal level of sensitivity; −40 dBm (default) .

<sds> > 128 ; More aggressive ; <sds>=129 is −39 dBm. <sds> < 128 ; Less aggressive; <sds>=127 is −41 dBm.

■The <sdi> specifies the amount of time the modem shall wait before reporting silence to the DTE. It is used for determining :

Presumed hang-up (SILENCE), after which the modem sends <DLE>-s to DTE.

Default is 5 seconds.

AT+VSM=<cml>,<vsr>

Compression Method and Sampling Rate Specifications

This command enables the compression method and sampling specifications where cml = compression method label and vsr = voice sampling rate.

AT+VSM?

Returns the numeric and string labels of the compression method currently in use, and the

 

sampling rate currently in use.

AT+VSM=?

Reports the voice compression methods supported by the DCE, and the voice sampling rates at

 

which they are supported: The default is 129,8000 (16-bit linear, 8.0 kHz )

 

✟ 128, 8-bit linear, (7200, 8000, 11025)

 

✟ 129, 16-bit linear, (7200, 8000, 11025)

 

✟ 130, 8-bit A-law, (8000)

 

✟ 131, 8-bit μ-law, (8000)

 

✟ 132, IMA ADPCM, (8000)

46

Lucent Technologies Inc.

Version 1.0

Page 45 Page 47
Image 46
Page 45 Page 47
Contents Contents IntroductionAT Command Summary AT Command Set Summary DescriptionS-Register Summary Default Description AT Testing and Debugging Command Set Summary Description#UD Result Code Summary NoEC-No error control protocol AT Commands Reference Online Data Character Echo Command Echo CommandDnDial Request ID Information Otherwise Hook ControlMars Lapm Monitor Speaker Mode Monitor Speaker VolumeModulation 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 SelectionConnect Error Self-Test CommandsData Set Ready DSR Option View Active Configuration and Stored Profile SSEZn=x Store Telephone Number Store Current ConfigurationYnSelect Stored Profile for Hard Reset \An\Nn Error Control Mode Selection Bits/s Rate Adjusted\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 definedResponse Formatting Character user defined Command Line Editing 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 Summary AT FAX Command Set Class 1 FAXCommand Description AT FAX Commands Reference +FTM=m Transmit FAX Data with m Carrier Command Option Modulation Speed bits/s+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+VSM? AT+VSD=sds, sdi Silence Detection Quiet and SilenceAT+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=5 AT+VLS=7ATH 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 +ES? AT Commands+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.
Top Page Image Contents