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Tr30.2-style control and status registers, Auto answer, Ring count – Maxim Integrated Teridian V.22 bis Linux Softmodem for 73M1822/73M1922 MicroDAA User Manual

Page 21: Escape code character, Carriage return character

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UG_1x22_043

V.22 bis Linux Softmodem for 73M1x22 MicroDAA User Guide

Rev. 1.5

21

2.2.1.1 TR30.2-Style Control and Status Registers

S0

Auto Answer

n

0 –255

0

Auto answer disabled

1-255

Auto answer mode on selected number of rings

This register specifies the ring on which the modem will answer. A value of 1 to 255 will
place the modem in auto-answer mode and cause it to answer on that many rings
detected.

S1

Ring Count

n

0 –255

0

No valid rings detected

When the modem is set for Auto-Answer, register S1 keeps track of the number of times
the phone rings. After the end of ring-on time, the S1 register is reset to 0 after the sum of
S56 and S58 seconds has elapsed.

S2

Escape Code Character

n

0 – 127 (ASCII)

43

ASCII “+”

>127

Escape feature disabled

S3

Carriage Return Character

n

0 – 127 (ASCII)

13

This character terminates both the command line and the result codes.