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MM6854/64 Dual Band GSM Data Modem
ME 820047 Issue 1.0
Page 34 03/00
5.1.66 S Register Summary
Register Function Default
Value
S0
S1
S2
S3
S4
S5
S6
S7
S8
S10
S12
Rings to auto answer
Ring counter
Escape character
CR character termination character
LF character
Backspace character
Pause before blind dialling
Wait time for carrier
Sets number of seconds to wait when comma dial modifier
encountered in dial string
Wait time before disconnection
Escape code guard time
0
0
43
13
10
8
2
60
2
15
10
S0 Rings to auto-answer
Defines the number of rings before auto-answering an incoming call. Setting the S0 register to zero
will disable the auto answering.
S1 Ring counter
Contains the number of rings the modem has detected. The register is cleared when no rings occur
for 8 seconds, or when the value becomes equal to S0.
S2 Escape character
S2 contains the decimal value of the ASCII character used as the escape character. The default value
corresponds to an ASCII <+>. The value 127 disables the escape process.
S3 CR character
Sets the command line and result code terminator character. Affects asynchronous operation only.
S4 LF character
Sets the character recognised as a line feed. Affects asynchronous operation only.
S5 Backspace character
Sets the character recognised as backspace. Affects asynchronous operation only.
S6 Pause before blind dialling
The value of this register is ignored.
S7 Wait time for carrier
After dialling, this register sets the time the modem must wait before hanging up if it fails to detect the
remote carrier. Time is in seconds.
S8 Wait time before dialling
Sets the number of seconds to wait when comma dial modifier encountered in dial string.
S10 Wait time before disconnection
Sets the number of tenth of seconds to wait before disconnecting after the modem has indicated the
absence of received line signal.
S12 Escape code guard time
Defines the maximum silence time, in fiftieths of a second, accepted between two characters in an
escape sequence.