User manual

General AT Commands
DIVA T/A ISDN Modem Reference Guide
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Page 30
A/
Re-execute Previous Command
. Re-executes all the commands in the command
buffer. This command is mainly used to place another call (using the ATD dial command)
that failed to connect due to a busy line, no answer, or a wrong number. This command
is not preceded by AT nor followed by Enter.
+++
Escape Sequence
. The escape sequence is used to return to the command state from
data state. To issue the escape sequence, wait a moment, enter the escape character
three consecutive times (+++), then wait another moment. Its value is stored in
S-Register 2. The default value of the escape character as stored in S-Register 2 is ‘+’.