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Lucent Technologies Host-Based Controller Modem AT specifications DnDial, Echo Command

Models: Host-Based Controller Modem AT

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Data Addendum

Host-Based Controller Modem

June 15, 1998

AT Command Set

 

 

AT Command Reference (continued)

 

DnDial

This command instructs the modem to begin the dialing sequence. The dial string (n, including modifiers and the telephone number) is entered after the ATD command.

A dial string can be up to 60 characters long. Any digit or symbol (0¾9, *, #, A, B, C, D) may be dialed as touch- tone digits. Characters such as spaces, hyphens, and parentheses do not count¾they are ignored by the modem and may be included in the dial string to enhance readability.

The following may be used as dial string modifiers:

LRedials last number. Should be the first character following ATD, ignored otherwise.

P Pulse dialing.

T Touch-tone dialing (default).

, Pause during dialing. Pause for time specified in Register S8 before processing the next

character

in the dial string.

W Wait for dial tone. Modem waits for a second dial tone before processing the dial string.

V The modem switches to speakerphone mode and dials the number. An ATH command may be

used to

disconnect the voice call.

@Wait for quiet answer. Wait for five seconds of silence after dialing the number. If silence is not

detected, the modem sends a NO ANSWER result code back to the user.

!Hook flash. Causes the modem to go on-hook for 0.5 seconds and then return to off-hook.

;Return to command mode. Causes the modem to return to command mode after dialing the

number,

without disconnecting the call.

^ Disable data calling tone transmission.

S=n Dial a telephone number previously stored using the &Zn=x command (see the &Zn=x command for

 

further information). The range of n is 0—3.

$

Bong tone detection

En

Echo Command

This command controls whether or not the characters entered from your computer keyboard are echoed back to your monitor while the modem is in command mode.

E0:

Disables echo to the computer.

E1:

Enables echo to the computer (default).

Result Codes:

 

OK

n = 0, 1

ERROR

Otherwise

Fn

Online Data Character Echo Command

This command determines if the modem will echo data from the DTE. This modem does not support the F0 version of the command. However, the modem will accept F1, which may be issued by older communication software, to assure backward compatibility.

F0:

Online data character echo enabled (NOT SUPPORTED).

F1:

Online character echo disabled.

Result Codes:

 

Version 1.0

Lucent Technologies Inc.

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Lucent Technologies Host-Based Controller Modem AT specifications DnDial, Online Data Character Echo Command
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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.