IS-101 Voice Mode AT Commands

Table 25. Voice Mode Command Descriptions (Continued)

Command Default

Description

Compression Method Selection: (cont.)

<sel> Silence Expansion: This command enables the DTE to modify the amount of silence expansion. This parameter represents the maximum period of silence the DCE expands a period of silence compressed by the <scs> parameter. The DCE ignores the <sel> parameter if <scs> is zero.

 

 

<cml>

<vsr>

Serial

UART

Hard Disk

 

 

 

Sampling

Note

 

 

Compression

Data Rate (bps) Data Rate (bps)

(Bytes/sec.)

 

 

Rate

 

 

 

 

 

 

 

 

 

 

<cml> = CL1*

4800

48,000

57,600

4800

 

 

 

 

7200

72,000

115,200

7200

1

 

 

 

8000

80,000

115,200

8000

1

 

 

 

9600

96,000

115,200

9600

1

 

 

 

11025

110,250

115,200

11,025

1

 

 

<cml> = AD3

4800

18,000

19,200

1800

 

 

 

 

7200

27,000

38,400

2700

 

 

 

 

8000

30,000

38,400

3000

 

 

manufac-

 

9600

36,000

38,400

3600

 

+VSM=m

 

11025

41,344

57,600

4135

 

turer-

 

 

 

 

 

 

(cont.)

 

 

 

 

 

 

specified

<cml> = AD4

4800

24,000

38,400

2400

 

 

 

 

 

 

 

 

 

7200

36,000

38,400

3600

 

 

 

 

8000

40,000

57,600

4800

 

 

 

 

9600

48,000

57,600

4800

 

 

 

 

11025

55,125

57,600

5513

 

 

 

<cml> = LIN1

4800

48,000

57,600

4800

 

 

 

 

7200

72,000

115,200

7200

1

 

 

 

8000

80,000

115,200

8000

1

 

 

 

9600

96,000

115,200

9600

1

 

 

 

11,025

110,250

115,200

11,025

1

 

 

<cml> = LIN2

4800

96,000

115,200

9600

1

NOTES:

1.Because of the high UART data rates, these compression/sample rates may not be applicable to the serial host interface (that is, serial box modem) designs (see ATI5 to determine if the modem is using the serial host interface). For parallel and PC Card host interfaces, the modem ignores the UART data rate.

2.DTMF detection is provided for all sample rates.

 

 

Speakerphone On/Off Control: This command turns on the speakerphone function. This feature

 

 

provides full-duplex speakerphone capabilities with internal adaptive echo cancellers. This command

 

 

takes the received voice signal and loops it back to the analog transmit pins. The host must configure

 

 

the relays and microphone interface as necessary using the AT+VLS=m command. Typically, this

 

 

means setting the off-hook relay driver, speaker, and microphone inputs with AT+VLS=13.

+VSP=m

0

After enabling the speakerphone mode (+VSP=1), the modem remains in voice command mode and

provides information about local off-hook detection, DTMF detection, and tone detection—if supported

 

 

 

 

by the modem board.

 

 

Range: 0, 1

 

 

 

0*

Speakerphone mode disabled

 

 

1

Speakerphone mode enabled

NOTE: An asterisk (*) denotes the factory-default setting.

536EX Chipset Developer’s Manual

81

Intel Confidential

Page 80 Page 82
Page 81
Image 81
Intel 537EX manual Cml, Serial, Hard Disk, Compression, Bytes/sec
Page 80 Page 82

537EX specifications

The Intel 537EX is a powerful and innovative embedded processor designed for a range of applications, particularly in the fields of industrial automation, telecommunications, and transport management systems. This processor is a member of Intel's embedded product line, tailored specifically to meet the demands of systems that require high reliability and long lifecycle support.

One of the main features of the Intel 537EX is its multi-core architecture, which enables efficient parallel processing capabilities. This allows for the execution of multiple tasks simultaneously, significantly improving overall system performance. The processor also incorporates Intel’s advanced power management technology, which ensures that the device consumes energy efficiently, enhances thermal performance, and prolongs the lifespan of the system.

The Intel 537EX supports a range of connectivity options, including high-speed Ethernet and Serial ATA interfaces. This ensures that it can easily integrate into existing systems, seamlessly supporting applications that require robust data transfer capabilities. Additionally, the processor is equipped with multiple I/O ports, facilitating the connection of various peripherals and sensors, which is crucial in industrial applications.

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Another characteristic of the Intel 537EX is its extensive software support, which includes compatibility with various operating systems and development environments. This versatility makes it an attractive choice for developers looking to build or upgrade their embedded systems. With access to Intel's comprehensive software tools, developers can quickly optimize applications to take full advantage of the processor's capabilities.

The Intel 537EX also boasts excellent thermal performance, allowing it to operate efficiently in harsh environments. This is crucial for embedded applications in industrial settings where temperature fluctuations are common. Overall, the Intel 537EX is engineered to deliver high-performance processing power, superior connectivity, and enhanced security, solidifying its position as a reliable choice for demanding embedded applications.
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