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Lucent Technologies Host-Based Controller Modem AT Monitor Speaker Volume, Monitor Speaker Mode

Models: Host-Based Controller Modem AT

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Host-Based Controller Modem

Data Addendum

AT Command Set

June 15, 1998

 

 

AT Command Reference (continued)

 

20.Reason for call ending, only valid after call ends:

0 = Local modem command: ATH, DTR drop

1 = Remote modem: cleardown, loss of signal

2 = No answer, busy, etc.

3 = Training failure V.90, K56flex or V.34.

4 = Protocol failure if required by \N4, for example.

21.For PCM connection only, a hexadecimal 6-bit pattern of T1 frames with robbed-bit signaling.

22.For PCM connection only, the downstream digital loss.

23.For K56flex connection only, the V.8bis info sent by the server. Meaning is defined at the server and by convention. Example above is from a recent Ascend MAX in μ-Law.

Ln

Monitor Speaker Volume

This command sets speaker volume to low, medium, or high.

 

L0:

Selects low volume.

 

L1:

Selects low volume.

 

L2:

Selects medium volume (default).

 

L3:

Selects high volume.

Result Codes:

 

 

OK

n = 0, 1, 2, 3

 

ERROR

Otherwise

Mn

Monitor Speaker Mode

This command turns the speaker on or off.

M0:

 

The speaker is off.

M1:

 

The speaker is on until the modem detects the carrier signal (default).

M2:

 

The speaker is always on when modem is off-hook.

M3:

 

The speaker is on until the carrier is detected, except while dialing.

Result Codes:

 

 

OK

 

n = 0, 1, 2, 3

ERROR

Otherwise

Nn

Modulation Handshake

This command controls whether or not the local modem performs a negotiated handshake at connection time with the remote modem when the communication speed of the two modems is different.

N0:

When originating or answering, this is for handshake only at the communication standard specified by

 

S37 and the ATB command.

N1:

When originating or answering, begin the handshake only at the communication standard specified by

 

S37 and the ATB command. During handshake, fallback to a lower speed may occur (default).

Result Codes:

 

 

OK

n = 0, 1

 

ERROR

Otherwise

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Lucent Technologies Host-Based Controller Modem AT Monitor Speaker Volume, Monitor Speaker Mode, Modulation Handshake
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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.