Host-Based Controller Modem

Data Addendum

AT Command Set

June 15, 1998

 

 

AT Commands for Homologation Testing and Debugging (continued)

 

Table 13. The Homologation Parameters (continued)

Par #

Parameter Description

 

Range

Reference

 

 

 

 

19

Number of failed attempts allowed before

0—255

ATD

 

blacklisting

 

 

 

1a

Troubled call delay in minutes

0—255

ATD

1b

Ineffective call delay in minutes

0—255

ATD

1c

Erroneous call delay in minutes

0—255

ATD

1d

Blacklisting duration in multiple of 10 minutes

0—255;

ATD

 

 

0

= only delayed and no blacklisting

 

 

 

255 = no limit (i.e., till power turned off)

 

1e

Over-current sense validation time in

0—255, 0 = current sense disabled.

ATA, ATD

 

multiples of 10 ms

 

 

 

1f

Calling tone flag

0

= disabled

ATD , S35

 

 

1

= enabled, and disable with ^ dial

 

 

 

 

modifier permitted

 

 

 

2

= enabled, and disable with ^ dial

 

 

 

 

modifier not permitted

 

20

Blind dial flag

0

= not permitted

ATD , ATX

 

 

1

= permitted

 

 

 

2

= permitted with speaker on

 

21

Busy detect disable (with ATX) flag

0

= not permitted

ATD , ATX

 

 

1

= permitted

 

22

Guard tone type

0

= not present & adjustable

S37

 

 

1

= 550 Hz, 2 = 1800 Hz

 

23

Bell modes permitted flag

0

= not permitted

ATB

 

 

1

= permitted

 

24

Off-hook (ATH1) restrictions

0

= no restrictions

ATH1

 

 

1

= restricted by S7 duration

 

 

 

2

= not allowed

 

25

Shunt relay on time during off-hook in

0—255

ATD

 

multiples of 10 ms.

0

= shunt relay disabled

 

26

Hook flash time in multiples of 10 ms

0—255

ATD

 

 

0

= hook flash not allowed

 

27

Min. blind dial pause in seconds

0—65

S6

28

Max. blind dial pause in seconds

0—65

S6

29

Min. no answer time-out in seconds

0—65

S7

2a

Max. no answer time-out in seconds

0—65

S7

2b

Min. dial pause time in seconds

0—65

S8

2c

Max. dial pause time in seconds

0—65

S8

2d

Min. no carrier disconnect time in multiples of

1—65

S10

 

100 ms

 

 

 

2e

Max. no carrier disconnect time in multiples of

1—255

S10

 

100 ms

 

 

 

2f

Transmit level in dB with implied minus sign

0—255

ATD

30

Dial modifier validation

0 = if an invalid dial modifier is found, treat the

 

 

entire dial string as null (no digits dialed)

 

 

 

1 = ignore invalid dial modifiers

 

66

Lucent Technologies Inc.

Version 1.0

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Lucent Technologies Host-Based Controller Modem AT specifications Ata, Atd, Atd , Atx, Atb, ATH1

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.

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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.