Host-Based Controller Modem

Data Addendum

AT Command Set

June 15, 1998

 

 

AT Voice Commands Reference

AT+FCLASS=8

Enter Voice Mode

The command AT+FCLASS=8 puts the modem in voice mode. Speakerphone and TAD modes are subsumed under the more general heading of voice mode, and use a particular subset of voice mode commands to implement their respective features and functions.

The modem controller will maintain the overall state of the system so as to know when voice commands are issued in the context of using the speakerphone versus TAD or other voice contexts.

AT+FCLASS?

Returns the current DCE mode

AT+FCLASS=?

Queries the DCE for the range of modes supported DCE returns: 0, 1, 8, 80 (data, FAX,

 

voice, VoiceView)

AT+VIP

Initialize Voice Parameters

The command AT+VIP causes the modem to initialize all the voice parameters to their default values. The command has no effect on the +FCLASS setting.

AT+VCID=<pmode> Caller ID

With this command caller identification is enabled/disabled.

· Disable caller ID:

<pmode>=0

·Enable, formatted caller report: <pmode>=1

·Enable, unformatted caller report: <pmode>=2

AT+VCID?

 

Returns the current caller ID pmode

AT+VCID=?

Queries the DCE for the range of supported caller ID report formats DCE returns: 0, 1, 2

AT+VDR=<enable>,<report>

Distinctive Ringing & Cadence Report

This command will enable the distinctive ringing feature. This will allow a report of DROF/DRON to follow an exact ring cadence coming over the phone line.

AT+VDR?

Returns the current values of <enable> and <report

AT+VDR=?

Queries the DCE for the range of supported distinctive ring configurations DCE

returns: (0, 1),

(0¾255)

AT+VGT=<level>

Speaker Volume Control

This command will enable the speaker volume control.

<level> is 0¾255

<level>=128: Nominal volume level for sending to speaker

<level>=<value greater than 128>: Increase volume above nominal level

<level>=<value less than 128>: Decrease volume below nominal level

AT+VGT?

Returns current value

AT+VGT=?

Returns range of supported values

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Lucent Technologies Inc.

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

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.