Lucent Technologies Host-Based Controller Modem AT #Ud, S-Register Summary Default Description

Models: Host-Based Controller Modem AT

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Data Addendum

 

 

 

Host-Based Controller Modem

June 15, 1998

 

 

 

 

AT Command Set

 

 

 

 

 

 

 

 

 

AT Command Summary (continued)

 

 

 

 

Table 2. AT Testing and Debugging Command Set Summary

 

 

 

 

 

 

 

 

 

 

 

 

Command

 

Description

 

Command

Description

&&C

 

Write to/read from host interface

 

%T94

Test external DSP RAM

&&L

 

Line-to-line loopback

 

%T124

Return to on-chip DSP RAM

&&R

 

Write to/read from DSP RAM location

 

%T125

Load K56flex image to external DSP RAM

&&S

 

Speaker codec loopback

 

#UD

Unimodem diagnostics

 

 

 

 

 

 

 

 

 

Table 3. The S-Register Summary

 

 

 

 

 

 

 

 

 

 

 

 

Register

 

Default

Description

 

 

 

 

S0

 

0

 

Automatic answer ring number

 

 

 

 

S1

 

0

 

Ring counter

 

 

 

 

S2

 

43

AT escape character

 

 

 

 

S3

 

13

Command line termination character

 

 

 

S4

 

10

Response formatting character

 

 

 

 

S5

 

8

 

Command line editing character

 

 

 

S6

 

2

 

Wait before dialing

 

 

 

 

S7

 

50

Connection completion time-out

 

 

 

S8

 

2

 

Comma dial modifier time

 

 

 

 

S10

 

20

Automatic disconnect delay

 

 

 

 

S11

 

95

DTMF dialing speed

 

 

 

 

S12

 

50

Escape guard time

 

 

 

 

S14

 

8

 

General bit-mapped options status

 

 

 

 

 

 

 

 

 

 

 

S21

 

48

V.24 bit-mapped options status

 

 

 

 

S22

 

112

Results bit-mapped options status

 

 

 

S24

 

10

Timer to control sleep mode

 

 

 

 

S28

 

1

 

V.34 modulation enable/disable

 

 

 

S30

 

0

 

Inactivity timer

 

 

 

 

S32

 

16

Synthetic ring volume

 

 

 

 

S33

 

0

 

Synthetic ring frequency

 

 

 

 

S35

 

0

 

Data calling tone

 

 

 

 

S36

 

7

 

Negotiation fallback

 

 

 

 

S37

 

0

 

Dial line rate

 

 

 

 

S38

 

1

 

Enable/disable K56flex settings

 

 

 

S42*

 

1

 

Auto rate

 

 

 

 

S43*

 

1

 

Auto mode

 

 

 

 

S48

 

7

 

LAPM error control and feature negotiation

 

 

 

S89

 

10

Timer to control sleep mode

 

 

 

 

S90

 

10

Local phone status

 

 

 

 

 

 

 

 

 

 

 

 

S91

 

15

Line transmit level

 

 

 

 

S108

 

7

 

Network codec type

 

 

 

 

* S-registers 42, and 43 are for test and debugging purposes only.

Version 1.0

Lucent Technologies Inc.

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Lucent Technologies Host-Based Controller Modem AT AT Testing and Debugging Command Set Summary Description, #Ud

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.