If a number between 1 and 4 is entered for this register, it will set the value to 5, and the inactivity before standby will be 5 seconds. This is done for compatibility with previous products which allowed time-outs down to 1 s.
Range: 0, 5— 65
Default: 10
Read-only Local Phone

Data Addendum

Host-Based Controller Modem

June 15, 1998

AT Command Set

 

 

AT Commands Reference S-Registers (continued)

 

S43

Auto Mode (default 1, range 0¾1)

 

This command is used for testing and debugging only.

V.32bis startup auto mode operation disabled.

0 = auto mode disabled, 1 = enabled.

Range:

 

0—1

Default:

 

1

S48

 

LAPM Error Control and Feature Negotiation (default 7)

S48

= 7

 

Negotiation enabled

S48

= 128

Negotiation disabled; forces immediate fallback options specified in S36

The following chart lists the S36 and S48 configuration settings necessary to negotiate certain types of connections:

 

 

S48

= 7

S48 = 128

S36 = 0, 2

 

LAPM or hangup

 

do not use

S36 = 1, 3

 

LAPM or async

 

async

S36 = 4, 6

 

LAPM, MNP, or hangup

MNP or hangup

S36 = 5, 7

 

LAPM, MNP, or async

 

MNP or async

S89

Timer to Control Sleep Mode

 

This command displays the number of seconds of inactivity (no characters sent from the DTE, no RING) in the off-line command state before the modem places itself into standby mode. A value of zero prevents standby mode.

Note:

S90

This register tells the status of the Local Phone. It is read-only. 0 = on-hook

1 = off-hook

S91Line Transmit Level

This register is effective only for Japan. It specifies the line transmit level in dBm with an implied minus sign.

Range:

6—15

Default:

15

Units:

1 dB

S108

Network Codec Type

S108=22

m-Law

S108=33

A-law

S108=7 default, or any other value: Coding as specified by digital modem in V.8bis information. If an old server does not tell its code type in V.8bis, then the client modem chooses based on its country ID. m-law regions are Japan, Taiwan, Korea, Hong Kong, North America, and Latin America. Everywhere else is A-law. (This S – Register is valid only in K56flex mode.)

Version 1.0

Lucent Technologies Inc.

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Lucent Technologies Host-Based Controller Modem AT specifications S43 Auto Mode default 1, range 0¾1, S48 S48 =, S89, S90
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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.
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