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Chapter 4 - AT Commands, S-Registers and Result Codes
S3
Return Character
Unit: ASCII Character
Range: 0-127
Default: 13
Description: Defines the character recognized as Carriage Return (RE-
TURN) or “Enter”.
S4
Line Feed Character
Unit: ASCII Character
Range: 0-127
Default: 10
Description: Defines the character recognized as LINE FEED.
S5
Backspace Character
Unit: ASCII Character
Range: 0-127
Default: 8
Description: Defines the character recognized as BACKSPACE.
S6
Wait Time for Dial Tone
Unit: 1 second
Range: 2-255, 4-255**
Default: 2, 4**
Description: Sets the time the modem waits after the RETURN key is pressed
before executing a dial command.
S7
Time for Carrier (Abort Timer)
Unit: 1 second
Range: 1-255, 1-45*
Default: 45
Description: Defines the Abort Timer (lack of carrier) delay time.
* Value for International and DOC units
** Value for International Units only