5.0 Hayes Emulation Mode

5.0 Hayes Emulation Mode

For easy reference, the following tables appear consecutively at the end of this chapter:

Table 5-1. Hayes Compatible Commands

Table 5-2. Hayes Mode Result Codes

Table 5-3. S Register Functions

5.1 Hayes Mode Autodialer

When the Hayes emulation mode is enabled, the Modem emulates a Hayes autodialer and functions like a Hayes modem. Commands are issued from the computer keyboard (or other DTE), and the Modem is compatible with software written to drive a Hayes style AT command set.

5.1.1ENABLING THE HAYES MODE AUTODIALER

You can enable the Hayes mode autodialer either by using the Quick Setup feature or by selecting HAYES from the DIALER screen:

Quick Setup. If you use the Quick Setup feature to select 2-Wire Dial (Hayes), the Hayes mode autodialer is enabled, and all modem options are automatically set to a preset configuration suitable for typical Hayes mode applications. To select the 2-Wire Dial (Hayes) Quick Setup, access QUICK SETUP screen 1 on the LCD and press pushbutton 2.

Dialer Mode. If you enable the Hayes mode autodialer using the Dialer Mode option, no other options are changed. Select DIALER from SETUP screen 2. Then, select HAYES from the DIALER screen.

5.1.2COMMAND GUIDELINES

The following guidelines for using Hayes compatible AT commands also provide a summary of the fundamentals of Hayes mode autodialer operation.

Note that although carriage returns are not shown in the examples in this chapter, a carriage return is required at the end of each command line.

Escape Sequence (+++). The escape sequence causes the modem to escape from the data transfer mode so it can interpret commands. (Alternate characters for the escape sequence can be assigned via S register S2.)

Attention Code. AT, the attention code, must begin all command lines.

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Black Box MD885A-R3, MD885AE-R2, MD885C-R2, 34336 user manual Hayes Emulation Mode, Hayes Mode Autodialer

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