US Robotics 56 1, Справочник по командам

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56K Softmodem
Command Reference
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Table 2-1: E<value> Commands
Basic Syntax Commands
Basic syntax commands use the following format:
• •
<command>[<parameter>]
Where <command> is a single character or a group of characters that represent
the command and <parameter> is an optional decimal number. There are some
exceptions to these rules and they are noted for each command as needed. The
echo command in the previous example follows the basic commands syntax
structure.
Extended Syntax Commands
Extended syntax commands
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have three different command formats:
• No parameters: +<name>
• Single parameter: +<name>[=<parameter>]
• Multiple parameters: +<name>[=<parameter1>][,<parameterX>]
Where <name> is the name of the command and begins with an alphanumeric
character and <parameterX> is an optional decimal number. There are some
exceptions to these rules, and they are noted for each command as needed.
In addition to the standard command format, extended commands have a read
and test syntax. The host system uses the read syntax to pole the modem and
determine the current setting for the command parameters. Read syntax has the
following format:
Read syntax: +<name>?
The host system uses the test syntax to pole the modem and determine the
supported parameter values for the command. Test syntax has the following
format:
Command Function
E0 Disables echo command.
E1 Enables echo command (default).
2.
* The description of extended syntax commands presented here is a simplified version of the information presented in ITU-T recom-
mendation V.250 (05/99). For further details, refer to Section 5.4 of recommendation V.250.