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I-8
A
PPENDIX
I: S-R
EGISTERS
S56 0 Bit-mapped register primarily used by 3Com Technical
Support for debugging purposes.
Bit Value Result
0 1 Disable non-linear coding.
1 2 Disable TX level deviation.
2 4 Disable preemphasis.
3 8 Disable precoding.
4 16 Disable shaping.
5 32 Disable V.34+.
6 64 Disable V.34.
7 128 Disable V.FC.
S58 0 Bit-mapped register primarily used by 3Com Technical
Support for debugging purposes.
Bit Value Result
0 1 Disable x2.
1 2 Reserved.
2 4 Reserved.
3 8 Reserved.
4 16 Reserved.
5 32 Disable V.90.
6 64 Reserved.
7 128 Reserved.
S70 0 Bit-mapped register primarily used by 3Com Technical
Support for debugging purposes.
Bit Value Result
0 1 Enable ring type A.
1 2 Enable ring type B.
2 4 Enable ring type C.
3 8 Enable ring type D.
4 16 Reserved.
5 32 Reserved.
6 64 Reserved.
7 128 Reserved.
Register Default Function