3com 1.024.1644-00 用户手册

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Technical Reference  
70 
56K Voice Faxmodem Internal - User’s Guide 
 
Register    Default 
Function 
 
  S32 
Bit-mapped register setup. To set the register, 
see the instructions for S13. 
 
Bit 
Value 
Result 
 
V.8 Call Indicate enabled. 
 
Enables V.8 mode. 
 
Reserved. 
 
Disable V.34 modulation. 
 
16 
Disable V.34+ modulation. 
 
32 
Disable 56K modulation. 
 
64 
Disable V.90 modulation. 
 
128 
Reserved. 
  S33 
Bit-mapped register setup. To set the register, see the 
instructions for S13. 
 
Bit 
Value 
Result 
 
Disable 2400 symbol rate. 
 
Disable 2743 symbol rate. 
 
Disable 2800 symbol rate. 
 
Disable 3000 symbol rate. 
 
16  
Disable 3200 symbol rate. 
 
32 
Disable 3429 symbol rate. 
 
64 
Reserved 
 
128 
Disable shaping. 
  S34 
Bit-mapped register setup. To set registers, see 
instructions for S13. 
 
Bit 
Value 
Result 
 
Disable 8S-2D trellis encoding. 
 
Disable 16S-4D trellis encoding. 
 
Disable 32S-2D trellis encoding. 
 
Disable 64S-4D trellis encoding. 
 
16 
Disable non-linear coding.