Host-Based Controller Modem

Data Addendum

AT Command Set

June 15, 1998

 

 

AT Commands for Homologation Testing and Debugging (continued)

 

Table 11. The Homologation Testing and Debugging Commands (continued)

Name

 

Description

Value

Comments

%Txx

V.22 1200 originate signaling

90

Set S37 = 5

 

V.22

1200 answer signaling

91

Set S37 = 5

 

V.22bis/V.34 2400 originate signaling*

90

Set S37 = 6

 

V.22bis/V.34 2400 answer signaling*

91

Set S37 = 6

 

V.32/V.34 4800 originate signaling*

90

Set S37 = 7

 

V.32/V.34 4800 answer signaling*

91

Set S37 = 7

 

V.32/V.34 7200 originate signaling*

90

Set S37 = 8

 

V.32/V.34 7200 answer signaling*

91

Set S37 = 8

 

V.32bis/V.34 9600 originate signaling*

90

Set S37 = 9

 

V.32bis/V.34 9600 answer signaling*

91

Set S37 = 9

 

V.32bis/V.34 12000 originate signaling*

90

Set S37 = 10

 

V.32bis/V.34 12000 answer signaling*

91

Set S37 = 10

 

V.32bis /V.3414400 originate signaling*

90

Set S37 = 11

 

V.32bis/V.34 14400 answer signaling*

91

Set S37 = 11

 

V.32ter/V.34 16800 originate signaling*

90

Set S37 = 12

 

V.32ter/V.34 16800 answer signaling*

91

Set S37 = 12

 

V.32ter/V.34 19200 originate signaling*

90

Set S37 = 13

 

V.32ter/V.34 19200 answer signaling*

91

Set S37 = 13

 

V.21

Channel 2 mark symbol

91

Set S37 = 3

 

V.21

Channel 2 space symbol

93

Set S37 = 3

 

V.27

2400 signaling

76

—

 

V.27

4800 signaling

77

—

 

V.29

7200 signaling

78

—

 

V.29

9600 signaling

79

—

 

V.17

12000 signaling

80

—

 

V.17

14400 signaling

81

—

 

Off-Hook

82

This puts the modem in off-hook state.

 

V.34

21600 originate signaling

90

Set S37 = 14

 

V.34

21600 answer signaling

91

Set S37 = 14

 

V.34

24000 originate signaling

90

Set S37 = 15

 

V.34

24000 answer signaling

91

Set S37 = 15

 

V.34

26400 originate signaling

90

Set S37 = 16

 

V.34

26400 answer signaling

91

Set S37 = 16

 

V.34

28800 originate signaling

90

Set S37 = 17

 

V.34

28800 answer signaling

91

Set S37 = 17

 

V.34bis 31200 originate signaling

90

Set S37 = 18

 

V.34bis 31200 answer signaling

91

Set S37 = 18

 

V.34bis 33600 originate signaling

90

Set S37 = 19

 

V.34bis 33600 answer signaling

91

Set S37 = 19

∙The default is V.34 with register S28 = 1. To disable, set S28 = 0.

The following example shows how to use the V.22bis 2400 originate signaling homologation test command: S28 = 0

S37 = 6

AT%T90

62

Lucent Technologies Inc.

Version 1.0

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Lucent Technologies Host-Based Controller Modem AT specifications Version
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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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