Data Addendum

Host-Based Controller Modem

June 15, 1998

AT Command Set

 

 

AT Commands Reference S-Registers (continued)

 

S30

Inactivity Timer

 

S30 specifies the length of time (in minutes) that the modem will wait before disconnecting when no data is sent or received. This function is only applicable to buffer mode..

Range: 0—255

Default: 0

S32 Synthetic Ring Volume

This register specifies a synthetic ring volume.

Range: 0—255 (allowed, but not meaningful)

Default: 10

S33 Synthetic Ring Frequency

This register specifies a synthetic ring frequency. There are five choices, with 0 meaning disabled.

Range: 0—5

Default: 0

S35

Data Calling Tone

Data Calling Tone is a tone of certain frequency and cadence as specified in V.25 which allows remote Data/FAX/Voice discrimination. The frequency is 1300 Hz with a cadence of .5 s on and 2 s off.

0 = disabled, 1 = enabled

Range: 0—1

Default: 0

S37

Dial Line Rate (default 0)

This register sets the maximum line data rate. In K56flex and V.90 mode, S37 controls the upstream V.34 rate.

S37

= 0

auto rate

S37

= 1

reserved

S37 = 2

1200/75 bit/s (V.23)

S37

= 3

300 bit/s

S37

= 4

reserved

S37

= 5

1200 bit/s

S37

= 6

2400 bit/s

S37

= 7

4800 bit/s

S37

= 8

7200 bit/s

S37

= 9

9600 bit/s

S37

= 10

12000 bit/s

S37

= 11

14400 bit/s

S37

= 12

16800 bit/s

S37

= 13

19200 bit/s

S37

= 14

21600 bit/s

S37

= 15

24000 bit/s

S37

= 16

26400 bit/s

S37

= 17

28800 bit/s

S37

= 18

31200 bit/s

S37

= 19

33600 bit/s

Version 1.0

Lucent Technologies Inc.

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Lucent Technologies Host-Based Controller Modem AT specifications S30 Inactivity Timer, S32 Synthetic Ring Volume, S35, S37

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.