Host-Based Modem

 

 

 

Data Addendum

 

AT Command Set

 

 

 

 

 

 

June 15, 1998

 

 

 

 

 

 

 

 

 

 

 

 

Test and Debug AT Commands (continued)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

41

 

 

3 digits

 

0-400

 

Error Control frame size

 

 

 

 

42

 

 

2 digits

 

0-FF

 

Error control link timeouts

 

 

X

 

43

 

 

2 digits

 

0-FF

 

Error control link NAKs

 

 

 

 

44

 

Table 8

 

0-1

 

Compression Negotiation Result (Note 7)

 

 

X

 

45

 

 

4 digits

 

0-200

 

Compression dictionary size (Note 7)

 

 

 

 

46-4F

 

 

 

 

 

 

 

Reserved

 

 

 

 

50

 

 

1 digit

 

0-2

 

Transmit flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/133

 

 

 

51

 

 

1 digit

 

0-2

 

Receive flow control: 0 = off; 1 = DC1/DC3; 2 = V.24 ckt 106/133

 

 

 

52

 

 

8 digits

 

0-FFFFFFFF

 

Transmit characters sent from DTE (Note 8)

 

 

 

 

53

 

 

8 digits

 

0-FFFFFFFF

 

Received characters sent to DTE (Note 8)

 

 

 

 

54

 

 

8 digits

 

0-FFFF

 

Transmit characters lost (data overrun errors from DTE) (Note 9)

 

 

 

55

 

 

8 digits

 

0-FFFF

 

Received characters lost (data overrun errors to DTE) (Note 9)

 

 

 

56

 

 

8 digits

 

0-FFFFFFFF

 

Transmit Frame count, if error control protocol running (Note 8)

 

X

 

57

 

 

8 digits

 

0-FFFFFFFF

 

Received Frame count, if error control protocol running (Note 8)

 

X

 

58

 

 

8 digits

 

0-FFFF

 

Transmit Frame error count, if error control protocol running

(Note 9)

 

X

 

59

 

 

8 digits

 

0-FFFF

 

Received Frame error count, if error control protocol running

(Note 9)

 

X

 

5A-5F

 

 

 

 

 

 

 

Reserved

 

 

 

 

60

 

Tables 9-10

 

Note 10

 

Termination Cause

 

 

X

 

61

 

 

2 digits

 

0-FF

 

Call Waiting event count

 

 

 

 

62-7F

 

 

 

 

 

 

 

Reserved for future versions of this specification

 

 

 

 

80-FF

 

 

 

 

 

 

 

Reserved for manufacturer proprietary keys

 

 

 

 

Table 2 - Call Setup Result Codes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Code

 

Definition

 

 

 

 

 

 

 

Implemented

 

0

 

No previous call (modem log has been cleared since any previous calls)

 

 

X

 

1

 

No dial tone detected

 

 

 

 

 

X

 

2

 

Reorder signal detected, network busy

 

 

 

 

3

 

Busy signal detected

 

 

 

 

 

X

 

4

 

No recognized signal detected

 

 

 

 

 

X

 

5

 

Voice detected

 

 

 

 

 

 

 

 

 

6

 

Text telephone signal detected (see V.18)

 

 

 

 

7

 

Data Answering signal detected (e.g. V.25 ANS, V.8 ANSam)

 

 

X

 

8

 

Data Calling signal detected (e.g. V.25 CT, V.8 CI)

 

 

 

 

9

 

Fax Answering signal detected (e.g. T.30 CED, DIS)

 

 

 

 

A

 

Fax Calling signal detected (e.g. T.30 CNG)

 

 

 

 

B

 

V.8bis signal detected

 

 

 

 

 

 

 

C-F

 

Reserved

 

 

 

 

 

 

 

 

 

Table 6 - gstnModulationSchemeActive from 3.7.2/V.58

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Value (hex)

 

Description

 

Implemented

 

 

 

 

 

0

 

 

 

V.17

 

 

 

 

 

 

 

 

 

1

 

 

 

V.21

 

 

 

 

 

 

 

 

 

2

 

 

 

V.22

 

 

 

 

 

 

 

 

 

3

 

 

 

V.22bis

 

 

 

 

 

 

 

 

 

4

 

 

 

V.23 Constant Carrier (1200/75)

 

 

 

 

 

 

5

 

 

 

V.23 Switched Carrier (half duplex)

 

 

 

 

 

 

6

 

 

 

V.26bis

 

 

 

 

 

 

 

 

 

7

 

 

 

V.26ter

 

 

 

 

 

 

 

 

 

8

 

 

 

V.27ter

 

 

 

 

 

 

 

 

 

9

 

 

 

V.29 HD

 

 

 

 

 

 

 

A

 

 

V.32

 

 

 

X

 

 

 

 

 

B

 

 

V.32bis

 

 

 

 

 

 

 

 

 

C

 

 

V.34

 

 

 

X

 

 

 

 

 

D

 

 

V.34 HD

 

 

 

 

 

 

 

E

 

 

V.pcm (asymmetric)

 

 

 

 

 

 

 

F

 

 

V.pcm (symmetric)

 

 

 

 

 

 

 

E-7F

 

 

Reserved (V.58)

 

 

 

 

 

 

 

80

 

 

 

“X2™”

 

 

 

 

 

 

 

 

 

81

 

 

 

“K56FLEX™”

 

X

 

 

 

 

 

82

 

 

 

“V.FC”

 

 

 

 

 

 

 

 

 

83

 

 

 

“V.32terbo”

 

 

 

 

 

 

 

80-FF

 

 

Reserved for mfgs

 

 

 

 

 

 

26

Lucent Technologies Inc.

Version 1.0

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Lucent Technologies Host-Based Controller Modem AT Call Setup Result Codes, GstnModulationSchemeActive from 3.7.2/V.58
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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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