Lucent Technologies Host-Based Controller Modem AT AT+VRA=interval Ringback Goes Away Timer

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Data Addendum

Host-Based Controller Modem

June 15, 1998

AT Command Set

 

AT Voice Commands Reference (continued)

AT+VRA=<interval>

Ringback Goes Away Timer

The modem uses the ringback goes away timer when originating a call.

This command sets this timer to the amount of time the modem shall wait between ringbacks before assuming that the remote station has gone off-hook.

AT+VRA?

Returns the current value.

AT+VRA=?

Returns the range of supported values.

AT+VRN=<interval>

Ringback Never Appeared Timer

The modem uses the ringback never appeared timer when originating a call.

The AT+VRN command sets this timer to the amount of time that the modem shall spend looking for an initial ringback. If ringback is not detected within this interval, the modem shall assume that the remote station has gone off-hook.

AT+VRN?

Returns the current value.

AT+VRN=?

Returns the supported values.

AT+VPR=<rate>

Select DTE/DCE Interface Rate

The AT+VPR command returns an OK for any rate but has no action.

Events Reported to the DTE :

The modem will return OK when going off-hook in voice mode (+FCLASS=8). After answering in voice mode, the modem may send any of the following <DLE> shielded event codes to the DTE, as appropriate:

<DLE> Shielded Codes Sent from DCE to DTE

Code Character

Description

0¾9, A¾D, #, *

DTMF tones

a

Answer tone

b

Busy tone

c

Fax calling tone

d

Dial tone

e

Data calling tone

h

Local phone on-hook

H

Local phone off-hook

R

Ring

s

Silence timer has expired

<ETX>

End of voice data transmission

@

CAS tone detected

<DLE> Codes Sent to DCE:

For simple actions in voice mode, the modem may send any of the following <DLE> shielded event codes (in ASCII) to the DTE, as appropriate:

<DLE> Shielded Codes Sent from DTE to DCE

Code Character

Description

u

Bump up the volume by 1 dB

d

Bump down the volume by 1 dB

<ETX>

End of voice data transmission

!

End receive data state

Version 1.0

Lucent Technologies Inc.

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Contents Introduction ContentsAT Command Set Summary Description AT Command Summary#UD AT Testing and Debugging Command Set Summary DescriptionS-Register Summary Default Description Result Code Summary NoEC-No error control protocol AT Commands Reference DnDial Echo CommandOnline Data Character Echo Command Mars Otherwise Hook ControlRequest ID Information Lapm Modulation Handshake Monitor Speaker VolumeMonitor Speaker Mode VnDCE Response Format Return On-line to Data ModeSelect Pulse Dialing Result Code ControlExtended Result Codes Result Code OptionResult Code Selection and Call Progress Monitoring Ext. Result Code Dial Tone Detect Busy Tone DetectAuto Retrain OK ErrorLong Space Disconnect Recall Stored ProfileAuxiliary Relay option Fn Load Factory SettingsDn DTR Control Gn V.22bis Guard Tone ControlPulse Dial Make-to-Break Ratio Selection Asynchronous Communications ModeQn Asynchronous Communications Mode Local Flow Control SelectionData Set Ready DSR Option Self-Test CommandsConnect Error SSE View Active Configuration and Stored Profile\An Store Current ConfigurationYnSelect Stored Profile for Hard Reset Zn=x Store Telephone Number\Kn Break Control Bits/s Rate Adjusted\Nn Error Control Mode Selection \N3 Data Calling Tone \Tn Inactivity Timer\Vn Protocol Result Code \Xn XON/XOFF Pass ThroughView Numbers in Blacklist Cn Data Compression Control En Enable/Disable Auto-Retrain and Fallback/Fall ForwardTest and Debug AT Commands AT#UD Last Call Status Report Format DiagGstnModulationSchemeActive from 3.7.2/V.58 Call Setup Result CodesValue Description Implemented ErrorControl Active from 3.5.2/V.58 Value DescriptionCompressionActive from 3.2.2/V.58 Value Description CallCleared codes from 3.6.4/V.58-1994DteHangupCommand AT Escape Character user defined AT Commands Reference S-RegistersS3Command Line Termination Character user defined Auto Answer Ring NumberConnection Completion Time-Out Command Line Editing Character user definedResponse Formatting Character user defined S12 Escape Guard Time Comma Dial Modifier TimeS10 S11S28 S24 Timer to Control Sleep ModeS21 24/General Bit Mapped Options Status S22 Results Bit Mapped Options StatusS35 S30 Inactivity TimerS32 Synthetic Ring Volume S33 Synthetic Ring FrequencyS38 K56flex Downstream Rate S42 Auto Rate default 1, range 0 ¾1S89 S43 Auto Mode default 1, range 0¾1S48 Lapm Error Control and Feature Negotiation default S48 S48 =Command Description AT FAX Command Set Class 1 FAXAT FAX Command Set Summary AT FAX Commands Reference +FRM=m Receive FAX Data with m Carrier Command Option Modulation Speed bits/s+FTM=m Transmit FAX Data with m Carrier +FRH=m Receive Hdlc Data with m Carrier +FTH=m Transmit Hdlc Data with m CarrierFPR Product Identification +FMM +FAA Adaptive answerManufacturer Identification +FMI Result Lucent Data/FaxAT Voice Command Set Not Defined In IS-101 Specification AT Voice Command SetAT Voice Command Set Voice CommandsAT Voice Commands Reference AT+VNH = Hook Automatic Hang-up Control AT+VIT = Timer DTE/DCE Inactivity TimerAT+VGR=gain AT+VEM=mask Event Reporting and MaskingStart voice transmission and reception process AT+VLS=label Analog Source/Destination SelectionAT+VTD=dur AT+VTS=stringAT+VSM=? AT+VSD=sds, sdi Silence Detection Quiet and SilenceAT+VSM? Events Reported to the DTE AT+VRA=interval Ringback Goes Away TimerAT+VRN=interval Ringback Never Appeared Timer AT+VPR=rate Select DTE/DCE Interface RateAT+VTS= ATD DLE HATH AT+VLS=7AT+VLS=5 Example # 2 Initiating a stored number speakerphone call ATA Example # 3 Answering a speakerphone callRing AT+FCLASS=1AT+VLS=1 Example # 6 Switching from speakerphone mode to TAD modeAT+FCLASS=0 ConnectDLE-R Modem answers call AT Dsvd Commands Version / Revision Information +GMR? 25ter AT Commands25ter AT Commands Manufacturer Identification +GMI?V8o, v8a, and v8cf +ES=? AT Commands+ES? +ITF=? Idle,,,crctype,nrzien+ESA=? +ITF= off, onAT Commands for Homologation Testing and Debugging Version USA Country Codes CountryCode in HEXAT%T21,par#,paramvalue Pulse dial make time 255 ATH1 ATA, ATDATD , ATX ATBPar # Parameter Description Range Reference Homologation ParametersVersion 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 Norway Spain Par. # Netherlands Italy150 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 ATZ OK ATZ OK ATS11? 085 OKXX-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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