Autobaud Feature

The modem automatically detects the speed and character format of the following AT commands issued from your DTE:

•AT

•at

•A/

•a/

This means that any AT command you issue to the modem will cause the modem to “Autobaud.” The exception is the lower-case “a/” and upper-case“A/”, from which only speed can be detected. When the a/ or A/ commands are issued, the modem assumes parity to be the same as that of the previous command.

NOTE: Autobaud does not operate when the modem is online in escape mode. Autobauding works at the following DTE rates (bps):

300

1200

2400

4800

7200

9600

12,000

14,400

16,800

19,200

21,600

24,000

26,400

28,800

38,400

57,600

115,200

 

Table 5-2summarizes the 10-bit-total character formats for autobauding. (Autobauding is valid only with 10-bit character formats.)

Table 5-2.

Valid Autobauding Character Formats

Start Bit

Data Bits

Parity

Stop Bits

1

7

Even or Odd

1

1

7

None

2

1

7

Mark or Space

1

1

8

None

1

 

 

 

 

Result codes, such as RING, are sent at the last autobauded DTE speed and parity. CONNECT result codes are also sent at the last autobauded DTE speed, even if the call is established at a different speed. When the modem is turned on, the last autobauded speed is saved. Because parity is saved within option sets, the parity value that is saved in the power-up option set is the one that is active.

The Escape Sequence—(+++)

The escape sequence is used when the modem is online and you need to enter commands to the modem without disconnecting. The escape sequence with guard time protects against losing the connection while you send commands.

NOTE: Autobaud does not operate when the modem is in escape mode. Once in command state, you can:

•Terminate a call

•Initiate and terminate a test

•Issue AT action commands

•Change your modem’s configuration

•Initiate a remote configuration session

•Read modem status using the AT*ST command

Using the

AT ACU

Using the AT Automatic Calling Interface 5-5

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Telenetics 326X V.34, V.34-SDC, V.32bis Series Autobaud Feature, Escape Sequence-+++, Valid Autobauding Character Formats
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326X V.34, V.32bis Series, V.34-SDC specifications

Telenetics has been a key player in the field of telecommunications, offering advanced modem solutions that cater to diverse communication needs. Among their notable products are the V.34-SDC and V.32bis series, including the 326X V.34 modem. These modems have been designed to enhance data transmission reliability and speed in various applications.

The Telenetics V.34-SDC modem represents a significant leap in technology, supporting data rates of up to 28.8 Kbps. This modem utilizes the advanced V.34 modulation scheme, which optimizes the use of existing telephone lines to deliver impressive performance, especially for users requiring high-speed data transmission. The V.34-SDC model also features robust error correction and data compression techniques, ensuring that users receive accurate data even over less than ideal connections. With its extended line-conditioning capabilities, the V.34-SDC modem can efficiently handle long distances and poor line conditions.

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The 326X V.34 modem further exemplifies Telenetics' commitment to high performance. It combines the V.34 capabilities with enhanced security features, offering users encryption options for sensitive data. This is particularly crucial for businesses that need to safeguard their information against potential vulnerabilities during transmission. The 326X also supports various data communication protocols, making it adaptable for multiple platforms and applications.

In summary, Telenetics’ V.34-SDC, V.32bis series, and 326X V.34 modems stand out for their high-speed data transmission, compatibility, advanced error correction, and security features. These technologies make them excellent choices for both enterprise and networking applications where reliable communication is vital. Telenetics continues to innovate, delivering modem solutions that meet the evolving demands of the telecommunications landscape.
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