Table of Contents
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3.13 Escape Sequences .............................................................................. 52
3.14 Remote Configuration Commands ....................................................... 53
3.15 Line Probe Commands ........................................................................ 54
3.16 Diagnostic Commands......................................................................... 55
Chapter 4 - S-Registers .................................................................................... 56
4.1
Introduction ........................................................................................... 57
4.2
S-Registers .......................................................................................... 57
4.3
Reading and Assigning S-Register Values ........................................... 63
4.3.1
Examples of Assigning Values ........................................................... 63
4.3.2
Examples of Reading Values .............................................................. 63
4.4
AT Commands Affecting S-Registers ................................................... 64
5.1
Introduction ........................................................................................... 66
5.2
How V.42 Detects and Corrects Errors ................................................ 67
5.3
Data Compression ............................................................................... 68
5.4
MNP Classes........................................................................................ 68
5.5
V.42 Mode Select Command (#L) ......................................................... 69
5.5.1
#L0 Command ..................................................................................... 69
5.5.1.1
5.5.1.2
5.5.2
#L1 Command ..................................................................................... 69
5.5.3
#L2 Command .................................................................................... 69
5.5.4
#L3 Command ..................................................................................... 69
5.6
Modes of Operation .............................................................................. 70
5.6.1
5.6.2
5.6.3
5.7
Flow Control ......................................................................................... 71
5.8
Modem-Initiated Flow Control ............................................................... 72
5.8.1
5.8.2
5.9
5.9.1
5.9.2
5.9.3
and Pacing Commands ........................................................................ 74
5.10.1 V.42 Error Correction Modes .............................................................. 74
5.10.2 Modem-Initiated Flow Control ............................................................. 74
5.10.3 XON/XOFF Pass-Through .................................................................. 74
5.10.4 Hewlett Packard ENQ/ACK Pacing ..................................................... 74
5.10.5 Non-Error Correction Mode Flow Control ............................................. 74
Originate Mode ................................................................................ 69
Answer Mode ................................................................................... 69
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